1 // Copyright (c) Microsoft Corporation.
2 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
3 
4 #ifndef DOUBLE_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
5 #define DOUBLE_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
6 
7 #include <charconv>
8 
9 #include "test.hpp"
10 using namespace std;
11 
12 // C11 7.21.6.1 "The fprintf function"/8:
13 
14 // "Then, if a conversion with style E would have an exponent of X:
15 // - if P > X >= -4, the conversion is with style f (or F) and precision P - (X + 1).
16 // - otherwise, the conversion is with style e (or E) and precision P - 1."
17 
18 // "Finally, [...] any trailing zeros are removed from the fractional portion of the result
19 // and the decimal-point character is removed if there is no fractional portion remaining."
20 
21 inline constexpr DoublePrecisionToCharsTestCase double_general_precision_to_chars_test_cases[] = {
22     // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
23     {0.0, chars_format::general, 4, "0"},
24     {-0.0, chars_format::general, 4, "-0"},
25     {double_inf, chars_format::general, 4, "inf"},
26     {-double_inf, chars_format::general, 4, "-inf"},
27     {double_nan, chars_format::general, 4, "nan"},
28     {-double_nan, chars_format::general, 4, "-nan(ind)"},
29     {double_nan_payload, chars_format::general, 4, "nan"},
30     {-double_nan_payload, chars_format::general, 4, "-nan"},
31     {1.729, chars_format::general, 4, "1.729"},
32     {-1.729, chars_format::general, 4, "-1.729"},
33 
34     // Test corner cases.
35     {0x0.0000000000001p-1022, chars_format::general, 1000,
36         "4."
37         "94065645841246544176568792868221372365059802614324764425585682500675507270208751865299836361635992379796564695"
38         "44571773092665671035593979639877479601078187812630071319031140452784581716784898210368871863605699873072305000"
39         "63874091535649843873124733972731696151400317153853980741262385655911710266585566867681870395603106249319452715"
40         "91492455329305456544401127480129709999541931989409080416563324524757147869014726780159355238611550134803526493"
41         "47201937902681071074917033322268447533357208324319360923828934583680601060115061698097530783422773183292479049"
42         "82524730776375927247874656084778203734469699533647017972677717585125660551199131504891101451037862738167250955"
43         "837389733598993664809941164205702637090279242767544565229087538682506419718265533447265625"
44         "e-324"}, // min subnormal
45     {0x0.fffffffffffffp-1022, chars_format::general, 1000,
46         "2."
47         "22507385850720088902458687608585988765042311224095946549352480256244000922823569517877588880375915526423097809"
48         "50434312085877387158357291821993020294379224223559819827501242041788969571311791082261043971979604000454897391"
49         "93807919893608152561311337614984204327175103362739154978273159414382813627511383860409424946494228631669542910"
50         "50802018159266421349966065178030950759130587198464239060686371020051087232827846788436319445158661350412234790"
51         "14792369585208321597621066375401613736583044193603714778355306682834535634005074073040135602968046375918583163"
52         "12422452159926254649430083685186171942241764645513713542013221703137049658321015465406803539741790602258950302"
53         "3501937519773030945763173210852507299305089761582519159720757232455434770912461317493580281734466552734375"
54         "e-308"}, // max subnormal
55     {0x1p-1022, chars_format::general, 1000,
56         "2."
57         "22507385850720138309023271733240406421921598046233183055332741688720443481391819585428315901251102056406733973"
58         "10358110051524341615534601088560123853777188211307779935320023304796101474425836360719215650469425037342083752"
59         "50806650616658158948720491179968591639648500635908770118304874799780887753749949451580451605050915399856582470"
60         "81864511353793580499211598108576605199243335211435239014879569960959128889160299264151106346631339366347758651"
61         "30293717620473256317814856643508721228286376420448468114076139114770628016898532441100241614474216185671661505"
62         "40154285084716752901903161322778896729707373123334086988983175067838846926092773977972858659654941091369095406"
63         "136467568702398678315290680984617210924625396728515625e-308"}, // min normal
64     {0x1.fffffffffffffp+1023, chars_format::general, 1000,
65         "17976931348623157081452742373170435679807056752584499659891747680315726078002853876058955863276687817154045895"
66         "35143824642343213268894641827684675467035375169860499105765512820762454900903893289440758685084551339423045832"
67         "36903222948165808559332123348274797826204144723168738177180919299881250404026184124858368"}, // max normal
68 
69     {0x0.0000000000001p-1022, chars_format::general, 6, "4.94066e-324"}, // min subnormal
70     {0x0.fffffffffffffp-1022, chars_format::general, 6, "2.22507e-308"}, // max subnormal
71     {0x1p-1022, chars_format::general, 6, "2.22507e-308"}, // min normal
72     {0x1.fffffffffffffp+1023, chars_format::general, 6, "1.79769e+308"}, // max normal
73 
74     // Test maximum-length output (excluding minus signs).
75     {0x1.fffffffffffffp-1022, chars_format::general, 1000,
76         "4."
77         "45014771701440227211481959341826395186963909270329129604685221944964444404215389103305904781627017582829831782"
78         "60792422137401728773891892910553144148156412434867599762821265346585071045737627442980259622449029037796981144"
79         "44614570510266311510031828794952795966823603998647925096578034214163701381261333311989876551545144031526125381"
80         "32666529513060001849177663286607555958373922409899478075565940981010216121988146052587425791790000716759993441"
81         "45086087205681577915435923018910334964869420614052182892431445797605163650903606514140377217442262561590244668"
82         "52576737244643007551333245007965068671949137768847800530996396770975896584413789443379662199396731693628045708"
83         "4866613206797017728916080020698679408551343728867675409720757232455434770912461317493580281734466552734375e-"
84         "308"}, // scientific, happens to be the same length as max subnormal
85     {0x1.fffffffffffffp-14, chars_format::general, 1000,
86         "0.000122070312499999986447472843931194574906839989125728607177734375"}, // fixed
87 
88     // Test varying precision. Negative precision requests P == 6. Zero precision requests P == 1.
89     // Here, the scientific exponent X is 0.
90     // Therefore, fixed notation is always chosen with precision P - (X + 1) == P - 1.
91     {0x1.b04p0, chars_format::general, -2, "1.68848"},
92     {0x1.b04p0, chars_format::general, -1, "1.68848"},
93     {0x1.b04p0, chars_format::general, 0, "2"},
94     {0x1.b04p0, chars_format::general, 1, "2"}, // fixed notation trims decimal point
95     {0x1.b04p0, chars_format::general, 2, "1.7"},
96     {0x1.b04p0, chars_format::general, 3, "1.69"},
97     {0x1.b04p0, chars_format::general, 4, "1.688"},
98     {0x1.b04p0, chars_format::general, 5, "1.6885"},
99     {0x1.b04p0, chars_format::general, 6, "1.68848"},
100     {0x1.b04p0, chars_format::general, 7, "1.688477"},
101     {0x1.b04p0, chars_format::general, 8, "1.6884766"},
102     {0x1.b04p0, chars_format::general, 9, "1.68847656"},
103     {0x1.b04p0, chars_format::general, 10, "1.688476562"}, // round to even
104     {0x1.b04p0, chars_format::general, 11, "1.6884765625"}, // exact
105     {0x1.b04p0, chars_format::general, 12, "1.6884765625"}, // trim trailing zeros
106     {0x1.b04p0, chars_format::general, 13, "1.6884765625"},
107 
108     // Here, the scientific exponent X is -5.
109     // Therefore, scientific notation is always chosen with precision P - 1.
110     {0x1.8p-15, chars_format::general, -2, "4.57764e-05"},
111     {0x1.8p-15, chars_format::general, -1, "4.57764e-05"},
112     {0x1.8p-15, chars_format::general, 0, "5e-05"},
113     {0x1.8p-15, chars_format::general, 1, "5e-05"}, // scientific notation trims decimal point
114     {0x1.8p-15, chars_format::general, 2, "4.6e-05"},
115     {0x1.8p-15, chars_format::general, 3, "4.58e-05"},
116     {0x1.8p-15, chars_format::general, 4, "4.578e-05"},
117     {0x1.8p-15, chars_format::general, 5, "4.5776e-05"},
118     {0x1.8p-15, chars_format::general, 6, "4.57764e-05"},
119     {0x1.8p-15, chars_format::general, 7, "4.577637e-05"},
120     {0x1.8p-15, chars_format::general, 8, "4.5776367e-05"},
121     {0x1.8p-15, chars_format::general, 9, "4.57763672e-05"},
122     {0x1.8p-15, chars_format::general, 10, "4.577636719e-05"},
123     {0x1.8p-15, chars_format::general, 11, "4.5776367188e-05"}, // round to even
124     {0x1.8p-15, chars_format::general, 12, "4.57763671875e-05"}, // exact
125     {0x1.8p-15, chars_format::general, 13, "4.57763671875e-05"}, // trim trailing zeros
126     {0x1.8p-15, chars_format::general, 14, "4.57763671875e-05"},
127 
128     // Trim trailing zeros.
129     {0x1.80015p0, chars_format::general, 1, "2"}, // fixed notation trims decimal point
130     {0x1.80015p0, chars_format::general, 2, "1.5"},
131     {0x1.80015p0, chars_format::general, 3, "1.5"}, // general trims trailing zeros
132     {0x1.80015p0, chars_format::general, 4, "1.5"},
133     {0x1.80015p0, chars_format::general, 5, "1.5"},
134     {0x1.80015p0, chars_format::general, 6, "1.50002"},
135     {0x1.80015p0, chars_format::general, 7, "1.50002"},
136     {0x1.80015p0, chars_format::general, 8, "1.50002"},
137     {0x1.80015p0, chars_format::general, 9, "1.50002003"},
138     {0x1.80015p0, chars_format::general, 10, "1.500020027"},
139     {0x1.80015p0, chars_format::general, 11, "1.5000200272"},
140     {0x1.80015p0, chars_format::general, 12, "1.50002002716"},
141     {0x1.80015p0, chars_format::general, 13, "1.500020027161"},
142     {0x1.80015p0, chars_format::general, 14, "1.5000200271606"},
143     {0x1.80015p0, chars_format::general, 15, "1.50002002716064"},
144     {0x1.80015p0, chars_format::general, 16, "1.500020027160645"},
145     {0x1.80015p0, chars_format::general, 17, "1.5000200271606445"},
146     {0x1.80015p0, chars_format::general, 18, "1.50002002716064453"},
147     {0x1.80015p0, chars_format::general, 19, "1.500020027160644531"},
148     {0x1.80015p0, chars_format::general, 20, "1.5000200271606445312"}, // round to even
149     {0x1.80015p0, chars_format::general, 21, "1.50002002716064453125"}, // exact
150 
151     // Trim trailing zeros and decimal point.
152     {0x1.00015p0, chars_format::general, 1, "1"}, // fixed notation trims decimal point
153     {0x1.00015p0, chars_format::general, 2, "1"}, // general trims decimal point and trailing zeros
154     {0x1.00015p0, chars_format::general, 3, "1"},
155     {0x1.00015p0, chars_format::general, 4, "1"},
156     {0x1.00015p0, chars_format::general, 5, "1"},
157     {0x1.00015p0, chars_format::general, 6, "1.00002"},
158     {0x1.00015p0, chars_format::general, 7, "1.00002"},
159     {0x1.00015p0, chars_format::general, 8, "1.00002"},
160     {0x1.00015p0, chars_format::general, 9, "1.00002003"},
161     {0x1.00015p0, chars_format::general, 10, "1.000020027"},
162     {0x1.00015p0, chars_format::general, 11, "1.0000200272"},
163     {0x1.00015p0, chars_format::general, 12, "1.00002002716"},
164     {0x1.00015p0, chars_format::general, 13, "1.000020027161"},
165     {0x1.00015p0, chars_format::general, 14, "1.0000200271606"},
166     {0x1.00015p0, chars_format::general, 15, "1.00002002716064"},
167     {0x1.00015p0, chars_format::general, 16, "1.000020027160645"},
168     {0x1.00015p0, chars_format::general, 17, "1.0000200271606445"},
169     {0x1.00015p0, chars_format::general, 18, "1.00002002716064453"},
170     {0x1.00015p0, chars_format::general, 19, "1.000020027160644531"},
171     {0x1.00015p0, chars_format::general, 20, "1.0000200271606445312"}, // round to even
172     {0x1.00015p0, chars_format::general, 21, "1.00002002716064453125"}, // exact
173 
174     // Trim trailing zeros, scientific notation.
175     {0x1.5cf751db94e6bp-20, chars_format::general, 1, "1e-06"}, // scientific notation trims decimal point
176     {0x1.5cf751db94e6bp-20, chars_format::general, 2, "1.3e-06"},
177     {0x1.5cf751db94e6bp-20, chars_format::general, 3, "1.3e-06"}, // general trims trailing zeros
178     {0x1.5cf751db94e6bp-20, chars_format::general, 4, "1.3e-06"},
179     {0x1.5cf751db94e6bp-20, chars_format::general, 5, "1.3e-06"},
180     {0x1.5cf751db94e6bp-20, chars_format::general, 6, "1.3e-06"},
181     {0x1.5cf751db94e6bp-20, chars_format::general, 7, "1.3e-06"},
182     {0x1.5cf751db94e6bp-20, chars_format::general, 8, "1.3e-06"},
183     {0x1.5cf751db94e6bp-20, chars_format::general, 9, "1.3e-06"},
184     {0x1.5cf751db94e6bp-20, chars_format::general, 10, "1.3e-06"},
185     {0x1.5cf751db94e6bp-20, chars_format::general, 11, "1.3e-06"},
186     {0x1.5cf751db94e6bp-20, chars_format::general, 12, "1.3e-06"},
187     {0x1.5cf751db94e6bp-20, chars_format::general, 13, "1.3e-06"},
188     {0x1.5cf751db94e6bp-20, chars_format::general, 14, "1.3e-06"},
189     {0x1.5cf751db94e6bp-20, chars_format::general, 15, "1.3e-06"},
190     {0x1.5cf751db94e6bp-20, chars_format::general, 16, "1.3e-06"},
191     {0x1.5cf751db94e6bp-20, chars_format::general, 17, "1.3e-06"},
192     {0x1.5cf751db94e6bp-20, chars_format::general, 18, "1.30000000000000005e-06"},
193     {0x1.5cf751db94e6bp-20, chars_format::general, 19, "1.300000000000000047e-06"},
194     {0x1.5cf751db94e6bp-20, chars_format::general, 20, "1.3000000000000000471e-06"},
195     {0x1.5cf751db94e6bp-20, chars_format::general, 21, "1.30000000000000004705e-06"},
196     {0x1.5cf751db94e6bp-20, chars_format::general, 22, "1.300000000000000047052e-06"},
197     {0x1.5cf751db94e6bp-20, chars_format::general, 23, "1.3000000000000000470517e-06"},
198     {0x1.5cf751db94e6bp-20, chars_format::general, 24, "1.30000000000000004705166e-06"},
199     {0x1.5cf751db94e6bp-20, chars_format::general, 25, "1.300000000000000047051664e-06"},
200     {0x1.5cf751db94e6bp-20, chars_format::general, 26, "1.3000000000000000470516638e-06"},
201     {0x1.5cf751db94e6bp-20, chars_format::general, 27, "1.30000000000000004705166378e-06"},
202     {0x1.5cf751db94e6bp-20, chars_format::general, 28, "1.30000000000000004705166378e-06"},
203     {0x1.5cf751db94e6bp-20, chars_format::general, 29, "1.3000000000000000470516637804e-06"},
204     {0x1.5cf751db94e6bp-20, chars_format::general, 30, "1.30000000000000004705166378044e-06"},
205     {0x1.5cf751db94e6bp-20, chars_format::general, 31, "1.30000000000000004705166378044e-06"},
206     {0x1.5cf751db94e6bp-20, chars_format::general, 32, "1.3000000000000000470516637804397e-06"},
207     {0x1.5cf751db94e6bp-20, chars_format::general, 33, "1.30000000000000004705166378043968e-06"},
208     {0x1.5cf751db94e6bp-20, chars_format::general, 34, "1.300000000000000047051663780439679e-06"},
209     {0x1.5cf751db94e6bp-20, chars_format::general, 35, "1.3000000000000000470516637804396787e-06"},
210     {0x1.5cf751db94e6bp-20, chars_format::general, 36, "1.30000000000000004705166378043967867e-06"},
211     {0x1.5cf751db94e6bp-20, chars_format::general, 37, "1.300000000000000047051663780439678675e-06"},
212     {0x1.5cf751db94e6bp-20, chars_format::general, 38, "1.3000000000000000470516637804396786748e-06"},
213     {0x1.5cf751db94e6bp-20, chars_format::general, 39, "1.30000000000000004705166378043967867484e-06"},
214     {0x1.5cf751db94e6bp-20, chars_format::general, 40, "1.300000000000000047051663780439678674838e-06"},
215     {0x1.5cf751db94e6bp-20, chars_format::general, 41, "1.3000000000000000470516637804396786748384e-06"},
216     {0x1.5cf751db94e6bp-20, chars_format::general, 42, "1.30000000000000004705166378043967867483843e-06"},
217     {0x1.5cf751db94e6bp-20, chars_format::general, 43, "1.300000000000000047051663780439678674838433e-06"},
218     {0x1.5cf751db94e6bp-20, chars_format::general, 44, "1.3000000000000000470516637804396786748384329e-06"},
219     {0x1.5cf751db94e6bp-20, chars_format::general, 45, "1.30000000000000004705166378043967867483843293e-06"},
220     {0x1.5cf751db94e6bp-20, chars_format::general, 46, "1.300000000000000047051663780439678674838432926e-06"},
221     {0x1.5cf751db94e6bp-20, chars_format::general, 47, "1.3000000000000000470516637804396786748384329258e-06"},
222     {0x1.5cf751db94e6bp-20, chars_format::general, 48, "1.30000000000000004705166378043967867483843292575e-06"},
223     {0x1.5cf751db94e6bp-20, chars_format::general, 49, "1.300000000000000047051663780439678674838432925753e-06"},
224     {0x1.5cf751db94e6bp-20, chars_format::general, 50, "1.3000000000000000470516637804396786748384329257533e-06"},
225     {0x1.5cf751db94e6bp-20, chars_format::general, 51, "1.3000000000000000470516637804396786748384329257533e-06"},
226     {0x1.5cf751db94e6bp-20, chars_format::general, 52, "1.300000000000000047051663780439678674838432925753295e-06"},
227     {0x1.5cf751db94e6bp-20, chars_format::general, 53, "1.3000000000000000470516637804396786748384329257532954e-06"},
228     {0x1.5cf751db94e6bp-20, chars_format::general, 54, "1.30000000000000004705166378043967867483843292575329542e-06"},
229     {0x1.5cf751db94e6bp-20, chars_format::general, 55, "1.300000000000000047051663780439678674838432925753295422e-06"},
230     {0x1.5cf751db94e6bp-20, chars_format::general, 56, "1.3000000000000000470516637804396786748384329257532954216e-06"},
231     {0x1.5cf751db94e6bp-20, chars_format::general, 57, "1.3000000000000000470516637804396786748384329257532954216e-06"},
232     {0x1.5cf751db94e6bp-20, chars_format::general, 58, "1.3000000000000000470516637804396786748384329257532954216e-06"},
233     {0x1.5cf751db94e6bp-20, chars_format::general, 59,
234         "1.3000000000000000470516637804396786748384329257532954216003e-06"},
235     {0x1.5cf751db94e6bp-20, chars_format::general, 60,
236         "1.30000000000000004705166378043967867483843292575329542160034e-06"},
237     {0x1.5cf751db94e6bp-20, chars_format::general, 61,
238         "1.300000000000000047051663780439678674838432925753295421600342e-06"},
239     {0x1.5cf751db94e6bp-20, chars_format::general, 62,
240         "1.3000000000000000470516637804396786748384329257532954216003418e-06"},
241     {0x1.5cf751db94e6bp-20, chars_format::general, 63,
242         "1.3000000000000000470516637804396786748384329257532954216003418e-06"},
243     {0x1.5cf751db94e6bp-20, chars_format::general, 64,
244         "1.300000000000000047051663780439678674838432925753295421600341797e-06"},
245     {0x1.5cf751db94e6bp-20, chars_format::general, 65,
246         "1.3000000000000000470516637804396786748384329257532954216003417969e-06"},
247     {0x1.5cf751db94e6bp-20, chars_format::general, 66,
248         "1.30000000000000004705166378043967867483843292575329542160034179688e-06"}, // round to even
249     {0x1.5cf751db94e6bp-20, chars_format::general, 67,
250         "1.300000000000000047051663780439678674838432925753295421600341796875e-06"}, // exact
251 
252     // Trim trailing zeros and decimal point, scientific notation.
253     {0x1.92a737110e454p-19, chars_format::general, 1, "3e-06"}, // scientific notation trims decimal point
254     {0x1.92a737110e454p-19, chars_format::general, 2, "3e-06"}, // general trims decimal point and trailing zeros
255     {0x1.92a737110e454p-19, chars_format::general, 3, "3e-06"},
256     {0x1.92a737110e454p-19, chars_format::general, 4, "3e-06"},
257     {0x1.92a737110e454p-19, chars_format::general, 5, "3e-06"},
258     {0x1.92a737110e454p-19, chars_format::general, 6, "3e-06"},
259     {0x1.92a737110e454p-19, chars_format::general, 7, "3e-06"},
260     {0x1.92a737110e454p-19, chars_format::general, 8, "3e-06"},
261     {0x1.92a737110e454p-19, chars_format::general, 9, "3e-06"},
262     {0x1.92a737110e454p-19, chars_format::general, 10, "3e-06"},
263     {0x1.92a737110e454p-19, chars_format::general, 11, "3e-06"},
264     {0x1.92a737110e454p-19, chars_format::general, 12, "3e-06"},
265     {0x1.92a737110e454p-19, chars_format::general, 13, "3e-06"},
266     {0x1.92a737110e454p-19, chars_format::general, 14, "3e-06"},
267     {0x1.92a737110e454p-19, chars_format::general, 15, "3e-06"},
268     {0x1.92a737110e454p-19, chars_format::general, 16, "3e-06"},
269     {0x1.92a737110e454p-19, chars_format::general, 17, "3.0000000000000001e-06"},
270     {0x1.92a737110e454p-19, chars_format::general, 18, "3.00000000000000008e-06"},
271     {0x1.92a737110e454p-19, chars_format::general, 19, "3.000000000000000076e-06"},
272     {0x1.92a737110e454p-19, chars_format::general, 20, "3.000000000000000076e-06"},
273     {0x1.92a737110e454p-19, chars_format::general, 21, "3.000000000000000076e-06"},
274     {0x1.92a737110e454p-19, chars_format::general, 22, "3.000000000000000076003e-06"},
275     {0x1.92a737110e454p-19, chars_format::general, 23, "3.0000000000000000760026e-06"},
276     {0x1.92a737110e454p-19, chars_format::general, 24, "3.00000000000000007600257e-06"},
277     {0x1.92a737110e454p-19, chars_format::general, 25, "3.000000000000000076002572e-06"},
278     {0x1.92a737110e454p-19, chars_format::general, 26, "3.0000000000000000760025723e-06"},
279     {0x1.92a737110e454p-19, chars_format::general, 27, "3.00000000000000007600257229e-06"},
280     {0x1.92a737110e454p-19, chars_format::general, 28, "3.000000000000000076002572291e-06"},
281     {0x1.92a737110e454p-19, chars_format::general, 29, "3.0000000000000000760025722912e-06"},
282     {0x1.92a737110e454p-19, chars_format::general, 30, "3.00000000000000007600257229123e-06"},
283     {0x1.92a737110e454p-19, chars_format::general, 31, "3.000000000000000076002572291234e-06"},
284     {0x1.92a737110e454p-19, chars_format::general, 32, "3.0000000000000000760025722912339e-06"},
285     {0x1.92a737110e454p-19, chars_format::general, 33, "3.00000000000000007600257229123386e-06"},
286     {0x1.92a737110e454p-19, chars_format::general, 34, "3.000000000000000076002572291233861e-06"},
287     {0x1.92a737110e454p-19, chars_format::general, 35, "3.0000000000000000760025722912338608e-06"},
288     {0x1.92a737110e454p-19, chars_format::general, 36, "3.00000000000000007600257229123386082e-06"},
289     {0x1.92a737110e454p-19, chars_format::general, 37, "3.000000000000000076002572291233860824e-06"},
290     {0x1.92a737110e454p-19, chars_format::general, 38, "3.0000000000000000760025722912338608239e-06"},
291     {0x1.92a737110e454p-19, chars_format::general, 39, "3.00000000000000007600257229123386082392e-06"},
292     {0x1.92a737110e454p-19, chars_format::general, 40, "3.000000000000000076002572291233860823922e-06"},
293     {0x1.92a737110e454p-19, chars_format::general, 41, "3.0000000000000000760025722912338608239224e-06"},
294     {0x1.92a737110e454p-19, chars_format::general, 42, "3.00000000000000007600257229123386082392244e-06"},
295     {0x1.92a737110e454p-19, chars_format::general, 43, "3.000000000000000076002572291233860823922441e-06"},
296     {0x1.92a737110e454p-19, chars_format::general, 44, "3.0000000000000000760025722912338608239224413e-06"},
297     {0x1.92a737110e454p-19, chars_format::general, 45, "3.00000000000000007600257229123386082392244134e-06"},
298     {0x1.92a737110e454p-19, chars_format::general, 46, "3.000000000000000076002572291233860823922441341e-06"},
299     {0x1.92a737110e454p-19, chars_format::general, 47, "3.000000000000000076002572291233860823922441341e-06"},
300     {0x1.92a737110e454p-19, chars_format::general, 48, "3.00000000000000007600257229123386082392244134098e-06"},
301     {0x1.92a737110e454p-19, chars_format::general, 49, "3.000000000000000076002572291233860823922441340983e-06"},
302     {0x1.92a737110e454p-19, chars_format::general, 50, "3.0000000000000000760025722912338608239224413409829e-06"},
303     {0x1.92a737110e454p-19, chars_format::general, 51, "3.00000000000000007600257229123386082392244134098291e-06"},
304     {0x1.92a737110e454p-19, chars_format::general, 52, "3.000000000000000076002572291233860823922441340982914e-06"},
305     {0x1.92a737110e454p-19, chars_format::general, 53, "3.000000000000000076002572291233860823922441340982914e-06"},
306     {0x1.92a737110e454p-19, chars_format::general, 54, "3.00000000000000007600257229123386082392244134098291397e-06"},
307     {0x1.92a737110e454p-19, chars_format::general, 55, "3.000000000000000076002572291233860823922441340982913971e-06"},
308     {0x1.92a737110e454p-19, chars_format::general, 56, "3.0000000000000000760025722912338608239224413409829139709e-06"},
309     {0x1.92a737110e454p-19, chars_format::general, 57,
310         "3.00000000000000007600257229123386082392244134098291397095e-06"},
311     {0x1.92a737110e454p-19, chars_format::general, 58,
312         "3.000000000000000076002572291233860823922441340982913970947e-06"},
313     {0x1.92a737110e454p-19, chars_format::general, 59,
314         "3.0000000000000000760025722912338608239224413409829139709473e-06"},
315     {0x1.92a737110e454p-19, chars_format::general, 60,
316         "3.00000000000000007600257229123386082392244134098291397094727e-06"},
317     {0x1.92a737110e454p-19, chars_format::general, 61,
318         "3.000000000000000076002572291233860823922441340982913970947266e-06"},
319     {0x1.92a737110e454p-19, chars_format::general, 62,
320         "3.0000000000000000760025722912338608239224413409829139709472656e-06"},
321     {0x1.92a737110e454p-19, chars_format::general, 63,
322         "3.00000000000000007600257229123386082392244134098291397094726562e-06"}, // round to even
323     {0x1.92a737110e454p-19, chars_format::general, 64,
324         "3.000000000000000076002572291233860823922441340982913970947265625e-06"}, // exact
325 
326     // Test a large precision with fixed notation and scientific notation,
327     // verifying that we remain within the bounds of any lookup tables.
328     {0x1.ba9fbe76c8b44p+0, chars_format::general, 5000, "1.72900000000000009237055564881302416324615478515625"},
329     {0x1.d01ff9abb93d1p-20, chars_format::general, 5000,
330         "1.729000000000000090107283613749533657255597063340246677398681640625e-06"},
331 
332     // Test the transitions between fixed notation and scientific notation.
333     {5555555.0, chars_format::general, 1, "6e+06"},
334     {555555.0, chars_format::general, 1, "6e+05"},
335     {55555.0, chars_format::general, 1, "6e+04"},
336     {5555.0, chars_format::general, 1, "6e+03"},
337     {555.0, chars_format::general, 1, "6e+02"},
338     {55.0, chars_format::general, 1, "6e+01"}, // round to even
339     {5.0, chars_format::general, 1, "5"},
340     {0x1p-3, chars_format::general, 1, "0.1"}, // 0.125
341     {0x1p-6, chars_format::general, 1, "0.02"}, // 0.015625
342     {0x1p-9, chars_format::general, 1, "0.002"}, // 0.001953125
343     {0x1p-13, chars_format::general, 1, "0.0001"}, // 0.0001220703125
344     {0x1p-16, chars_format::general, 1, "2e-05"}, // 1.52587890625e-05
345     {0x1p-19, chars_format::general, 1, "2e-06"}, // 1.9073486328125e-06
346 
347     {5555555.0, chars_format::general, 2, "5.6e+06"},
348     {555555.0, chars_format::general, 2, "5.6e+05"},
349     {55555.0, chars_format::general, 2, "5.6e+04"},
350     {5555.0, chars_format::general, 2, "5.6e+03"},
351     {555.0, chars_format::general, 2, "5.6e+02"}, // round to even
352     {55.0, chars_format::general, 2, "55"},
353     {5.0, chars_format::general, 2, "5"},
354     {0x1p-3, chars_format::general, 2, "0.12"}, // round to even
355     {0x1p-6, chars_format::general, 2, "0.016"},
356     {0x1p-9, chars_format::general, 2, "0.002"},
357     {0x1p-13, chars_format::general, 2, "0.00012"},
358     {0x1p-16, chars_format::general, 2, "1.5e-05"},
359     {0x1p-19, chars_format::general, 2, "1.9e-06"},
360 
361     {5555555.0, chars_format::general, 3, "5.56e+06"},
362     {555555.0, chars_format::general, 3, "5.56e+05"},
363     {55555.0, chars_format::general, 3, "5.56e+04"},
364     {5555.0, chars_format::general, 3, "5.56e+03"}, // round to even
365     {555.0, chars_format::general, 3, "555"},
366     {55.0, chars_format::general, 3, "55"},
367     {5.0, chars_format::general, 3, "5"},
368     {0x1p-3, chars_format::general, 3, "0.125"},
369     {0x1p-6, chars_format::general, 3, "0.0156"},
370     {0x1p-9, chars_format::general, 3, "0.00195"},
371     {0x1p-13, chars_format::general, 3, "0.000122"},
372     {0x1p-16, chars_format::general, 3, "1.53e-05"},
373     {0x1p-19, chars_format::general, 3, "1.91e-06"},
374 
375     {5555555.0, chars_format::general, 4, "5.556e+06"},
376     {555555.0, chars_format::general, 4, "5.556e+05"},
377     {55555.0, chars_format::general, 4, "5.556e+04"}, // round to even
378     {5555.0, chars_format::general, 4, "5555"},
379     {555.0, chars_format::general, 4, "555"},
380     {55.0, chars_format::general, 4, "55"},
381     {5.0, chars_format::general, 4, "5"},
382     {0x1p-3, chars_format::general, 4, "0.125"},
383     {0x1p-6, chars_format::general, 4, "0.01562"}, // round to even
384     {0x1p-9, chars_format::general, 4, "0.001953"},
385     {0x1p-13, chars_format::general, 4, "0.0001221"},
386     {0x1p-16, chars_format::general, 4, "1.526e-05"},
387     {0x1p-19, chars_format::general, 4, "1.907e-06"},
388 
389     {5555555.0, chars_format::general, 5, "5.5556e+06"},
390     {555555.0, chars_format::general, 5, "5.5556e+05"}, // round to even
391     {55555.0, chars_format::general, 5, "55555"},
392     {5555.0, chars_format::general, 5, "5555"},
393     {555.0, chars_format::general, 5, "555"},
394     {55.0, chars_format::general, 5, "55"},
395     {5.0, chars_format::general, 5, "5"},
396     {0x1p-3, chars_format::general, 5, "0.125"},
397     {0x1p-6, chars_format::general, 5, "0.015625"},
398     {0x1p-9, chars_format::general, 5, "0.0019531"},
399     {0x1p-13, chars_format::general, 5, "0.00012207"},
400     {0x1p-16, chars_format::general, 5, "1.5259e-05"},
401     {0x1p-19, chars_format::general, 5, "1.9073e-06"},
402 
403     // Tricky corner cases.
404     // In these scenarios, rounding can adjust the scientific exponent X,
405     // which affects the transition between fixed notation and scientific notation.
406     {999.999, chars_format::general, 1, "1e+03"}, // "%.0e" is "1e+03"; X == 3
407     {999.999, chars_format::general, 2, "1e+03"}, // "%.1e" is "1.0e+03"; X == 3
408     {999.999, chars_format::general, 3, "1e+03"}, // "%.2e" is "1.00e+03"; X == 3
409     {999.999, chars_format::general, 4, "1000"}, // "%.3e" is "1.000e+03"; X == 3
410     {999.999, chars_format::general, 5, "1000"}, // "%.4e" is "1.0000e+03"; X == 3
411     {999.999, chars_format::general, 6, "999.999"}, // "%.5e" is "9.99999e+02"; X == 2
412 
413     {999.99, chars_format::general, 1, "1e+03"},
414     {999.99, chars_format::general, 2, "1e+03"},
415     {999.99, chars_format::general, 3, "1e+03"},
416     {999.99, chars_format::general, 4, "1000"},
417     {999.99, chars_format::general, 5, "999.99"},
418     {999.99, chars_format::general, 6, "999.99"},
419 
420     // C11's Standardese is slightly vague about how to perform the trial formatting in scientific notation,
421     // but the intention is to use precision P - 1, which is what's used when scientific notation is actually chosen.
422     // This example verifies this behavior. Here, P == 3 performs trial formatting with "%.2e", triggering rounding.
423     // That increases X to 3, forcing scientific notation to be chosen.
424     // If P == 3 performed trial formatting with "%.3e", rounding wouldn't happen,
425     // X would be 2, and fixed notation would be chosen.
426     {999.9, chars_format::general, 1, "1e+03"}, // "%.0e" is "1e+03"; X == 3
427     {999.9, chars_format::general, 2, "1e+03"}, // "%.1e" is "1.0e+03"; X == 3
428     {999.9, chars_format::general, 3, "1e+03"}, // "%.2e" is "1.00e+03"; X == 3; SPECIAL CORNER CASE
429     {999.9, chars_format::general, 4, "999.9"}, // "%.3e" is "9.999e+02"; X == 2
430     {999.9, chars_format::general, 5, "999.9"}, // "%.4e" is "9.9990e+02"; X == 2
431     {999.9, chars_format::general, 6, "999.9"}, // "%.5e" is "9.99900e+02"; X == 2
432 
433     {999.0, chars_format::general, 1, "1e+03"},
434     {999.0, chars_format::general, 2, "1e+03"},
435     {999.0, chars_format::general, 3, "999"},
436     {999.0, chars_format::general, 4, "999"},
437     {999.0, chars_format::general, 5, "999"},
438     {999.0, chars_format::general, 6, "999"},
439 
440     {99.9999, chars_format::general, 1, "1e+02"},
441     {99.9999, chars_format::general, 2, "1e+02"},
442     {99.9999, chars_format::general, 3, "100"},
443     {99.9999, chars_format::general, 4, "100"},
444     {99.9999, chars_format::general, 5, "100"},
445     {99.9999, chars_format::general, 6, "99.9999"},
446 
447     {99.999, chars_format::general, 1, "1e+02"},
448     {99.999, chars_format::general, 2, "1e+02"},
449     {99.999, chars_format::general, 3, "100"},
450     {99.999, chars_format::general, 4, "100"},
451     {99.999, chars_format::general, 5, "99.999"},
452     {99.999, chars_format::general, 6, "99.999"},
453 
454     {99.99, chars_format::general, 1, "1e+02"},
455     {99.99, chars_format::general, 2, "1e+02"},
456     {99.99, chars_format::general, 3, "100"},
457     {99.99, chars_format::general, 4, "99.99"},
458     {99.99, chars_format::general, 5, "99.99"},
459     {99.99, chars_format::general, 6, "99.99"},
460 
461     {99.9, chars_format::general, 1, "1e+02"},
462     {99.9, chars_format::general, 2, "1e+02"},
463     {99.9, chars_format::general, 3, "99.9"},
464     {99.9, chars_format::general, 4, "99.9"},
465     {99.9, chars_format::general, 5, "99.9"},
466     {99.9, chars_format::general, 6, "99.9"},
467 
468     {99.0, chars_format::general, 1, "1e+02"},
469     {99.0, chars_format::general, 2, "99"},
470     {99.0, chars_format::general, 3, "99"},
471     {99.0, chars_format::general, 4, "99"},
472     {99.0, chars_format::general, 5, "99"},
473     {99.0, chars_format::general, 6, "99"},
474 
475     {9.99999, chars_format::general, 1, "1e+01"},
476     {9.99999, chars_format::general, 2, "10"},
477     {9.99999, chars_format::general, 3, "10"},
478     {9.99999, chars_format::general, 4, "10"},
479     {9.99999, chars_format::general, 5, "10"},
480     {9.99999, chars_format::general, 6, "9.99999"},
481 
482     {9.9999, chars_format::general, 1, "1e+01"},
483     {9.9999, chars_format::general, 2, "10"},
484     {9.9999, chars_format::general, 3, "10"},
485     {9.9999, chars_format::general, 4, "10"},
486     {9.9999, chars_format::general, 5, "9.9999"},
487     {9.9999, chars_format::general, 6, "9.9999"},
488 
489     {9.999, chars_format::general, 1, "1e+01"},
490     {9.999, chars_format::general, 2, "10"},
491     {9.999, chars_format::general, 3, "10"},
492     {9.999, chars_format::general, 4, "9.999"},
493     {9.999, chars_format::general, 5, "9.999"},
494     {9.999, chars_format::general, 6, "9.999"},
495 
496     {9.99, chars_format::general, 1, "1e+01"},
497     {9.99, chars_format::general, 2, "10"},
498     {9.99, chars_format::general, 3, "9.99"},
499     {9.99, chars_format::general, 4, "9.99"},
500     {9.99, chars_format::general, 5, "9.99"},
501     {9.99, chars_format::general, 6, "9.99"},
502 
503     {9.9, chars_format::general, 1, "1e+01"},
504     {9.9, chars_format::general, 2, "9.9"},
505     {9.9, chars_format::general, 3, "9.9"},
506     {9.9, chars_format::general, 4, "9.9"},
507     {9.9, chars_format::general, 5, "9.9"},
508     {9.9, chars_format::general, 6, "9.9"},
509 
510     {9.0, chars_format::general, 1, "9"},
511     {9.0, chars_format::general, 2, "9"},
512     {9.0, chars_format::general, 3, "9"},
513     {9.0, chars_format::general, 4, "9"},
514     {9.0, chars_format::general, 5, "9"},
515     {9.0, chars_format::general, 6, "9"},
516 
517     {0.999999, chars_format::general, 1, "1"},
518     {0.999999, chars_format::general, 2, "1"},
519     {0.999999, chars_format::general, 3, "1"},
520     {0.999999, chars_format::general, 4, "1"},
521     {0.999999, chars_format::general, 5, "1"},
522     {0.999999, chars_format::general, 6, "0.999999"},
523 
524     {0.99999, chars_format::general, 1, "1"},
525     {0.99999, chars_format::general, 2, "1"},
526     {0.99999, chars_format::general, 3, "1"},
527     {0.99999, chars_format::general, 4, "1"},
528     {0.99999, chars_format::general, 5, "0.99999"},
529     {0.99999, chars_format::general, 6, "0.99999"},
530 
531     {0.9999, chars_format::general, 1, "1"},
532     {0.9999, chars_format::general, 2, "1"},
533     {0.9999, chars_format::general, 3, "1"},
534     {0.9999, chars_format::general, 4, "0.9999"},
535     {0.9999, chars_format::general, 5, "0.9999"},
536     {0.9999, chars_format::general, 6, "0.9999"},
537 
538     {0.999, chars_format::general, 1, "1"},
539     {0.999, chars_format::general, 2, "1"},
540     {0.999, chars_format::general, 3, "0.999"},
541     {0.999, chars_format::general, 4, "0.999"},
542     {0.999, chars_format::general, 5, "0.999"},
543     {0.999, chars_format::general, 6, "0.999"},
544 
545     {0.99, chars_format::general, 1, "1"},
546     {0.99, chars_format::general, 2, "0.99"},
547     {0.99, chars_format::general, 3, "0.99"},
548     {0.99, chars_format::general, 4, "0.99"},
549     {0.99, chars_format::general, 5, "0.99"},
550     {0.99, chars_format::general, 6, "0.99"},
551 
552     {0.9, chars_format::general, 1, "0.9"},
553     {0.9, chars_format::general, 2, "0.9"},
554     {0.9, chars_format::general, 3, "0.9"},
555     {0.9, chars_format::general, 4, "0.9"},
556     {0.9, chars_format::general, 5, "0.9"},
557     {0.9, chars_format::general, 6, "0.9"},
558 
559     {0.0999999, chars_format::general, 1, "0.1"},
560     {0.0999999, chars_format::general, 2, "0.1"},
561     {0.0999999, chars_format::general, 3, "0.1"},
562     {0.0999999, chars_format::general, 4, "0.1"},
563     {0.0999999, chars_format::general, 5, "0.1"},
564     {0.0999999, chars_format::general, 6, "0.0999999"},
565 
566     {0.099999, chars_format::general, 1, "0.1"},
567     {0.099999, chars_format::general, 2, "0.1"},
568     {0.099999, chars_format::general, 3, "0.1"},
569     {0.099999, chars_format::general, 4, "0.1"},
570     {0.099999, chars_format::general, 5, "0.099999"},
571     {0.099999, chars_format::general, 6, "0.099999"},
572 
573     {0.09999, chars_format::general, 1, "0.1"},
574     {0.09999, chars_format::general, 2, "0.1"},
575     {0.09999, chars_format::general, 3, "0.1"},
576     {0.09999, chars_format::general, 4, "0.09999"},
577     {0.09999, chars_format::general, 5, "0.09999"},
578     {0.09999, chars_format::general, 6, "0.09999"},
579 
580     {0.0999, chars_format::general, 1, "0.1"},
581     {0.0999, chars_format::general, 2, "0.1"},
582     {0.0999, chars_format::general, 3, "0.0999"},
583     {0.0999, chars_format::general, 4, "0.0999"},
584     {0.0999, chars_format::general, 5, "0.0999"},
585     {0.0999, chars_format::general, 6, "0.0999"},
586 
587     {0.099, chars_format::general, 1, "0.1"},
588     {0.099, chars_format::general, 2, "0.099"},
589     {0.099, chars_format::general, 3, "0.099"},
590     {0.099, chars_format::general, 4, "0.099"},
591     {0.099, chars_format::general, 5, "0.099"},
592     {0.099, chars_format::general, 6, "0.099"},
593 
594     {0.09, chars_format::general, 1, "0.09"},
595     {0.09, chars_format::general, 2, "0.09"},
596     {0.09, chars_format::general, 3, "0.09"},
597     {0.09, chars_format::general, 4, "0.09"},
598     {0.09, chars_format::general, 5, "0.09"},
599     {0.09, chars_format::general, 6, "0.09"},
600 
601     {0.00999999, chars_format::general, 1, "0.01"},
602     {0.00999999, chars_format::general, 2, "0.01"},
603     {0.00999999, chars_format::general, 3, "0.01"},
604     {0.00999999, chars_format::general, 4, "0.01"},
605     {0.00999999, chars_format::general, 5, "0.01"},
606     {0.00999999, chars_format::general, 6, "0.00999999"},
607 
608     {0.0099999, chars_format::general, 1, "0.01"},
609     {0.0099999, chars_format::general, 2, "0.01"},
610     {0.0099999, chars_format::general, 3, "0.01"},
611     {0.0099999, chars_format::general, 4, "0.01"},
612     {0.0099999, chars_format::general, 5, "0.0099999"},
613     {0.0099999, chars_format::general, 6, "0.0099999"},
614 
615     {0.009999, chars_format::general, 1, "0.01"},
616     {0.009999, chars_format::general, 2, "0.01"},
617     {0.009999, chars_format::general, 3, "0.01"},
618     {0.009999, chars_format::general, 4, "0.009999"},
619     {0.009999, chars_format::general, 5, "0.009999"},
620     {0.009999, chars_format::general, 6, "0.009999"},
621 
622     {0.00999, chars_format::general, 1, "0.01"},
623     {0.00999, chars_format::general, 2, "0.01"},
624     {0.00999, chars_format::general, 3, "0.00999"},
625     {0.00999, chars_format::general, 4, "0.00999"},
626     {0.00999, chars_format::general, 5, "0.00999"},
627     {0.00999, chars_format::general, 6, "0.00999"},
628 
629     {0.0099, chars_format::general, 1, "0.01"},
630     {0.0099, chars_format::general, 2, "0.0099"},
631     {0.0099, chars_format::general, 3, "0.0099"},
632     {0.0099, chars_format::general, 4, "0.0099"},
633     {0.0099, chars_format::general, 5, "0.0099"},
634     {0.0099, chars_format::general, 6, "0.0099"},
635 
636     {0.009, chars_format::general, 1, "0.009"},
637     {0.009, chars_format::general, 2, "0.009"},
638     {0.009, chars_format::general, 3, "0.009"},
639     {0.009, chars_format::general, 4, "0.009"},
640     {0.009, chars_format::general, 5, "0.009"},
641     {0.009, chars_format::general, 6, "0.009"},
642 
643     {0.000999999, chars_format::general, 1, "0.001"},
644     {0.000999999, chars_format::general, 2, "0.001"},
645     {0.000999999, chars_format::general, 3, "0.001"},
646     {0.000999999, chars_format::general, 4, "0.001"},
647     {0.000999999, chars_format::general, 5, "0.001"},
648     {0.000999999, chars_format::general, 6, "0.000999999"},
649 
650     {0.00099999, chars_format::general, 1, "0.001"},
651     {0.00099999, chars_format::general, 2, "0.001"},
652     {0.00099999, chars_format::general, 3, "0.001"},
653     {0.00099999, chars_format::general, 4, "0.001"},
654     {0.00099999, chars_format::general, 5, "0.00099999"},
655     {0.00099999, chars_format::general, 6, "0.00099999"},
656 
657     {0.0009999, chars_format::general, 1, "0.001"},
658     {0.0009999, chars_format::general, 2, "0.001"},
659     {0.0009999, chars_format::general, 3, "0.001"},
660     {0.0009999, chars_format::general, 4, "0.0009999"},
661     {0.0009999, chars_format::general, 5, "0.0009999"},
662     {0.0009999, chars_format::general, 6, "0.0009999"},
663 
664     {0.000999, chars_format::general, 1, "0.001"},
665     {0.000999, chars_format::general, 2, "0.001"},
666     {0.000999, chars_format::general, 3, "0.000999"},
667     {0.000999, chars_format::general, 4, "0.000999"},
668     {0.000999, chars_format::general, 5, "0.000999"},
669     {0.000999, chars_format::general, 6, "0.000999"},
670 
671     {0.00099, chars_format::general, 1, "0.001"},
672     {0.00099, chars_format::general, 2, "0.00099"},
673     {0.00099, chars_format::general, 3, "0.00099"},
674     {0.00099, chars_format::general, 4, "0.00099"},
675     {0.00099, chars_format::general, 5, "0.00099"},
676     {0.00099, chars_format::general, 6, "0.00099"},
677 
678     {0.0009, chars_format::general, 1, "0.0009"},
679     {0.0009, chars_format::general, 2, "0.0009"},
680     {0.0009, chars_format::general, 3, "0.0009"},
681     {0.0009, chars_format::general, 4, "0.0009"},
682     {0.0009, chars_format::general, 5, "0.0009"},
683     {0.0009, chars_format::general, 6, "0.0009"},
684 
685     // Having a scientific exponent X == -5 triggers scientific notation.
686     // If rounding adjusts this to X == -4, then fixed notation will be selected.
687     {0.0000999999, chars_format::general, 1, "0.0001"},
688     {0.0000999999, chars_format::general, 2, "0.0001"},
689     {0.0000999999, chars_format::general, 3, "0.0001"},
690     {0.0000999999, chars_format::general, 4, "0.0001"},
691     {0.0000999999, chars_format::general, 5, "0.0001"},
692     {0.0000999999, chars_format::general, 6, "9.99999e-05"},
693 
694     {0.000099999, chars_format::general, 1, "0.0001"},
695     {0.000099999, chars_format::general, 2, "0.0001"},
696     {0.000099999, chars_format::general, 3, "0.0001"},
697     {0.000099999, chars_format::general, 4, "0.0001"},
698     {0.000099999, chars_format::general, 5, "9.9999e-05"},
699     {0.000099999, chars_format::general, 6, "9.9999e-05"},
700 
701     {0.00009999, chars_format::general, 1, "0.0001"},
702     {0.00009999, chars_format::general, 2, "0.0001"},
703     {0.00009999, chars_format::general, 3, "0.0001"},
704     {0.00009999, chars_format::general, 4, "9.999e-05"},
705     {0.00009999, chars_format::general, 5, "9.999e-05"},
706     {0.00009999, chars_format::general, 6, "9.999e-05"},
707 
708     {0.0000999, chars_format::general, 1, "0.0001"},
709     {0.0000999, chars_format::general, 2, "0.0001"},
710     {0.0000999, chars_format::general, 3, "9.99e-05"},
711     {0.0000999, chars_format::general, 4, "9.99e-05"},
712     {0.0000999, chars_format::general, 5, "9.99e-05"},
713     {0.0000999, chars_format::general, 6, "9.99e-05"},
714 
715     {0.000099, chars_format::general, 1, "0.0001"},
716     {0.000099, chars_format::general, 2, "9.9e-05"},
717     {0.000099, chars_format::general, 3, "9.9e-05"},
718     {0.000099, chars_format::general, 4, "9.9e-05"},
719     {0.000099, chars_format::general, 5, "9.9e-05"},
720     {0.000099, chars_format::general, 6, "9.9e-05"},
721 
722     {0.00009, chars_format::general, 1, "9e-05"},
723     {0.00009, chars_format::general, 2, "9e-05"},
724     {0.00009, chars_format::general, 3, "9e-05"},
725     {0.00009, chars_format::general, 4, "9e-05"},
726     {0.00009, chars_format::general, 5, "9e-05"},
727     {0.00009, chars_format::general, 6, "9e-05"},
728 
729     // Rounding test cases without exponent-adjusting behavior.
730     {2999.999, chars_format::general, 1, "3e+03"},
731     {2999.999, chars_format::general, 2, "3e+03"},
732     {2999.999, chars_format::general, 3, "3e+03"},
733     {2999.999, chars_format::general, 4, "3000"},
734     {2999.999, chars_format::general, 5, "3000"},
735     {2999.999, chars_format::general, 6, "3000"},
736 
737     {2999.99, chars_format::general, 1, "3e+03"},
738     {2999.99, chars_format::general, 2, "3e+03"},
739     {2999.99, chars_format::general, 3, "3e+03"},
740     {2999.99, chars_format::general, 4, "3000"},
741     {2999.99, chars_format::general, 5, "3000"},
742     {2999.99, chars_format::general, 6, "2999.99"},
743 
744     {2999.9, chars_format::general, 1, "3e+03"},
745     {2999.9, chars_format::general, 2, "3e+03"},
746     {2999.9, chars_format::general, 3, "3e+03"},
747     {2999.9, chars_format::general, 4, "3000"},
748     {2999.9, chars_format::general, 5, "2999.9"},
749     {2999.9, chars_format::general, 6, "2999.9"},
750 
751     {2999.0, chars_format::general, 1, "3e+03"},
752     {2999.0, chars_format::general, 2, "3e+03"},
753     {2999.0, chars_format::general, 3, "3e+03"},
754     {2999.0, chars_format::general, 4, "2999"},
755     {2999.0, chars_format::general, 5, "2999"},
756     {2999.0, chars_format::general, 6, "2999"},
757 
758     {299.999, chars_format::general, 1, "3e+02"},
759     {299.999, chars_format::general, 2, "3e+02"},
760     {299.999, chars_format::general, 3, "300"},
761     {299.999, chars_format::general, 4, "300"},
762     {299.999, chars_format::general, 5, "300"},
763     {299.999, chars_format::general, 6, "299.999"},
764 
765     {299.99, chars_format::general, 1, "3e+02"},
766     {299.99, chars_format::general, 2, "3e+02"},
767     {299.99, chars_format::general, 3, "300"},
768     {299.99, chars_format::general, 4, "300"},
769     {299.99, chars_format::general, 5, "299.99"},
770     {299.99, chars_format::general, 6, "299.99"},
771 
772     {299.9, chars_format::general, 1, "3e+02"},
773     {299.9, chars_format::general, 2, "3e+02"},
774     {299.9, chars_format::general, 3, "300"},
775     {299.9, chars_format::general, 4, "299.9"},
776     {299.9, chars_format::general, 5, "299.9"},
777     {299.9, chars_format::general, 6, "299.9"},
778 
779     {299.0, chars_format::general, 1, "3e+02"},
780     {299.0, chars_format::general, 2, "3e+02"},
781     {299.0, chars_format::general, 3, "299"},
782     {299.0, chars_format::general, 4, "299"},
783     {299.0, chars_format::general, 5, "299"},
784     {299.0, chars_format::general, 6, "299"},
785 
786     {29.999, chars_format::general, 1, "3e+01"},
787     {29.999, chars_format::general, 2, "30"},
788     {29.999, chars_format::general, 3, "30"},
789     {29.999, chars_format::general, 4, "30"},
790     {29.999, chars_format::general, 5, "29.999"},
791     {29.999, chars_format::general, 6, "29.999"},
792 
793     {29.99, chars_format::general, 1, "3e+01"},
794     {29.99, chars_format::general, 2, "30"},
795     {29.99, chars_format::general, 3, "30"},
796     {29.99, chars_format::general, 4, "29.99"},
797     {29.99, chars_format::general, 5, "29.99"},
798     {29.99, chars_format::general, 6, "29.99"},
799 
800     {29.9, chars_format::general, 1, "3e+01"},
801     {29.9, chars_format::general, 2, "30"},
802     {29.9, chars_format::general, 3, "29.9"},
803     {29.9, chars_format::general, 4, "29.9"},
804     {29.9, chars_format::general, 5, "29.9"},
805     {29.9, chars_format::general, 6, "29.9"},
806 
807     {29.0, chars_format::general, 1, "3e+01"},
808     {29.0, chars_format::general, 2, "29"},
809     {29.0, chars_format::general, 3, "29"},
810     {29.0, chars_format::general, 4, "29"},
811     {29.0, chars_format::general, 5, "29"},
812     {29.0, chars_format::general, 6, "29"},
813 
814     {2.999, chars_format::general, 1, "3"},
815     {2.999, chars_format::general, 2, "3"},
816     {2.999, chars_format::general, 3, "3"},
817     {2.999, chars_format::general, 4, "2.999"},
818     {2.999, chars_format::general, 5, "2.999"},
819     {2.999, chars_format::general, 6, "2.999"},
820 
821     {2.99, chars_format::general, 1, "3"},
822     {2.99, chars_format::general, 2, "3"},
823     {2.99, chars_format::general, 3, "2.99"},
824     {2.99, chars_format::general, 4, "2.99"},
825     {2.99, chars_format::general, 5, "2.99"},
826     {2.99, chars_format::general, 6, "2.99"},
827 
828     {2.9, chars_format::general, 1, "3"},
829     {2.9, chars_format::general, 2, "2.9"},
830     {2.9, chars_format::general, 3, "2.9"},
831     {2.9, chars_format::general, 4, "2.9"},
832     {2.9, chars_format::general, 5, "2.9"},
833     {2.9, chars_format::general, 6, "2.9"},
834 
835     {2.0, chars_format::general, 1, "2"},
836     {2.0, chars_format::general, 2, "2"},
837     {2.0, chars_format::general, 3, "2"},
838     {2.0, chars_format::general, 4, "2"},
839     {2.0, chars_format::general, 5, "2"},
840     {2.0, chars_format::general, 6, "2"},
841 
842     {0.2999, chars_format::general, 1, "0.3"},
843     {0.2999, chars_format::general, 2, "0.3"},
844     {0.2999, chars_format::general, 3, "0.3"},
845     {0.2999, chars_format::general, 4, "0.2999"},
846     {0.2999, chars_format::general, 5, "0.2999"},
847     {0.2999, chars_format::general, 6, "0.2999"},
848 
849     {0.299, chars_format::general, 1, "0.3"},
850     {0.299, chars_format::general, 2, "0.3"},
851     {0.299, chars_format::general, 3, "0.299"},
852     {0.299, chars_format::general, 4, "0.299"},
853     {0.299, chars_format::general, 5, "0.299"},
854     {0.299, chars_format::general, 6, "0.299"},
855 
856     {0.29, chars_format::general, 1, "0.3"},
857     {0.29, chars_format::general, 2, "0.29"},
858     {0.29, chars_format::general, 3, "0.29"},
859     {0.29, chars_format::general, 4, "0.29"},
860     {0.29, chars_format::general, 5, "0.29"},
861     {0.29, chars_format::general, 6, "0.29"},
862 
863     {0.2, chars_format::general, 1, "0.2"},
864     {0.2, chars_format::general, 2, "0.2"},
865     {0.2, chars_format::general, 3, "0.2"},
866     {0.2, chars_format::general, 4, "0.2"},
867     {0.2, chars_format::general, 5, "0.2"},
868     {0.2, chars_format::general, 6, "0.2"},
869 
870     {0.02999, chars_format::general, 1, "0.03"},
871     {0.02999, chars_format::general, 2, "0.03"},
872     {0.02999, chars_format::general, 3, "0.03"},
873     {0.02999, chars_format::general, 4, "0.02999"},
874     {0.02999, chars_format::general, 5, "0.02999"},
875     {0.02999, chars_format::general, 6, "0.02999"},
876 
877     {0.0299, chars_format::general, 1, "0.03"},
878     {0.0299, chars_format::general, 2, "0.03"},
879     {0.0299, chars_format::general, 3, "0.0299"},
880     {0.0299, chars_format::general, 4, "0.0299"},
881     {0.0299, chars_format::general, 5, "0.0299"},
882     {0.0299, chars_format::general, 6, "0.0299"},
883 
884     {0.029, chars_format::general, 1, "0.03"},
885     {0.029, chars_format::general, 2, "0.029"},
886     {0.029, chars_format::general, 3, "0.029"},
887     {0.029, chars_format::general, 4, "0.029"},
888     {0.029, chars_format::general, 5, "0.029"},
889     {0.029, chars_format::general, 6, "0.029"},
890 
891     {0.02, chars_format::general, 1, "0.02"},
892     {0.02, chars_format::general, 2, "0.02"},
893     {0.02, chars_format::general, 3, "0.02"},
894     {0.02, chars_format::general, 4, "0.02"},
895     {0.02, chars_format::general, 5, "0.02"},
896     {0.02, chars_format::general, 6, "0.02"},
897 
898     {0.002999, chars_format::general, 1, "0.003"},
899     {0.002999, chars_format::general, 2, "0.003"},
900     {0.002999, chars_format::general, 3, "0.003"},
901     {0.002999, chars_format::general, 4, "0.002999"},
902     {0.002999, chars_format::general, 5, "0.002999"},
903     {0.002999, chars_format::general, 6, "0.002999"},
904 
905     {0.00299, chars_format::general, 1, "0.003"},
906     {0.00299, chars_format::general, 2, "0.003"},
907     {0.00299, chars_format::general, 3, "0.00299"},
908     {0.00299, chars_format::general, 4, "0.00299"},
909     {0.00299, chars_format::general, 5, "0.00299"},
910     {0.00299, chars_format::general, 6, "0.00299"},
911 
912     {0.0029, chars_format::general, 1, "0.003"},
913     {0.0029, chars_format::general, 2, "0.0029"},
914     {0.0029, chars_format::general, 3, "0.0029"},
915     {0.0029, chars_format::general, 4, "0.0029"},
916     {0.0029, chars_format::general, 5, "0.0029"},
917     {0.0029, chars_format::general, 6, "0.0029"},
918 
919     {0.002, chars_format::general, 1, "0.002"},
920     {0.002, chars_format::general, 2, "0.002"},
921     {0.002, chars_format::general, 3, "0.002"},
922     {0.002, chars_format::general, 4, "0.002"},
923     {0.002, chars_format::general, 5, "0.002"},
924     {0.002, chars_format::general, 6, "0.002"},
925 
926     {0.0002999, chars_format::general, 1, "0.0003"},
927     {0.0002999, chars_format::general, 2, "0.0003"},
928     {0.0002999, chars_format::general, 3, "0.0003"},
929     {0.0002999, chars_format::general, 4, "0.0002999"},
930     {0.0002999, chars_format::general, 5, "0.0002999"},
931     {0.0002999, chars_format::general, 6, "0.0002999"},
932 
933     {0.000299, chars_format::general, 1, "0.0003"},
934     {0.000299, chars_format::general, 2, "0.0003"},
935     {0.000299, chars_format::general, 3, "0.000299"},
936     {0.000299, chars_format::general, 4, "0.000299"},
937     {0.000299, chars_format::general, 5, "0.000299"},
938     {0.000299, chars_format::general, 6, "0.000299"},
939 
940     {0.00029, chars_format::general, 1, "0.0003"},
941     {0.00029, chars_format::general, 2, "0.00029"},
942     {0.00029, chars_format::general, 3, "0.00029"},
943     {0.00029, chars_format::general, 4, "0.00029"},
944     {0.00029, chars_format::general, 5, "0.00029"},
945     {0.00029, chars_format::general, 6, "0.00029"},
946 
947     {0.0002, chars_format::general, 1, "0.0002"},
948     {0.0002, chars_format::general, 2, "0.0002"},
949     {0.0002, chars_format::general, 3, "0.0002"},
950     {0.0002, chars_format::general, 4, "0.0002"},
951     {0.0002, chars_format::general, 5, "0.0002"},
952     {0.0002, chars_format::general, 6, "0.0002"},
953 
954     {0.00002999, chars_format::general, 1, "3e-05"},
955     {0.00002999, chars_format::general, 2, "3e-05"},
956     {0.00002999, chars_format::general, 3, "3e-05"},
957     {0.00002999, chars_format::general, 4, "2.999e-05"},
958     {0.00002999, chars_format::general, 5, "2.999e-05"},
959     {0.00002999, chars_format::general, 6, "2.999e-05"},
960 
961     {0.0000299, chars_format::general, 1, "3e-05"},
962     {0.0000299, chars_format::general, 2, "3e-05"},
963     {0.0000299, chars_format::general, 3, "2.99e-05"},
964     {0.0000299, chars_format::general, 4, "2.99e-05"},
965     {0.0000299, chars_format::general, 5, "2.99e-05"},
966     {0.0000299, chars_format::general, 6, "2.99e-05"},
967 
968     {0.000029, chars_format::general, 1, "3e-05"},
969     {0.000029, chars_format::general, 2, "2.9e-05"},
970     {0.000029, chars_format::general, 3, "2.9e-05"},
971     {0.000029, chars_format::general, 4, "2.9e-05"},
972     {0.000029, chars_format::general, 5, "2.9e-05"},
973     {0.000029, chars_format::general, 6, "2.9e-05"},
974 
975     {0.00002, chars_format::general, 1, "2e-05"},
976     {0.00002, chars_format::general, 2, "2e-05"},
977     {0.00002, chars_format::general, 3, "2e-05"},
978     {0.00002, chars_format::general, 4, "2e-05"},
979     {0.00002, chars_format::general, 5, "2e-05"},
980     {0.00002, chars_format::general, 6, "2e-05"},
981 
982     // Test the transitions between values of the scientific exponent X.
983     // For brevity, we avoid testing all possible combinations of P and X. Instead, we test:
984     // * All values of P where some X can be affected by rounding. (For double, this is [1, 15].)
985     // * P == 25, which is arbitrary.
986     // * P == numeric_limits::max_exponent10 + 1. This selects fixed notation for numeric_limits::max(),
987     //   so it's the largest interesting value of P.
988     // * Finally, we test the transitions around X == P - 1, ensuring that we can recognize every value of X.
989     {0x1.8e757928e0c9dp-14, chars_format::general, 1, "9e-05"},
990     {0x1.8e757928e0c9ep-14, chars_format::general, 1, "0.0001"},
991     {0x1.f212d77318fc5p-11, chars_format::general, 1, "0.0009"},
992     {0x1.f212d77318fc6p-11, chars_format::general, 1, "0.001"},
993     {0x1.374bc6a7ef9dbp-7, chars_format::general, 1, "0.009"},
994     {0x1.374bc6a7ef9dcp-7, chars_format::general, 1, "0.01"},
995     {0x1.851eb851eb851p-4, chars_format::general, 1, "0.09"},
996     {0x1.851eb851eb852p-4, chars_format::general, 1, "0.1"},
997     {0x1.e666666666666p-1, chars_format::general, 1, "0.9"},
998     {0x1.e666666666667p-1, chars_format::general, 1, "1"},
999     {0x1.2ffffffffffffp+3, chars_format::general, 1, "9"},
1000     {0x1.3000000000000p+3, chars_format::general, 1, "1e+01"},
1001     {0x1.a1554fbdad751p-14, chars_format::general, 2, "9.9e-05"},
1002     {0x1.a1554fbdad752p-14, chars_format::general, 2, "0.0001"},
1003     {0x1.04d551d68c692p-10, chars_format::general, 2, "0.00099"},
1004     {0x1.04d551d68c693p-10, chars_format::general, 2, "0.001"},
1005     {0x1.460aa64c2f837p-7, chars_format::general, 2, "0.0099"},
1006     {0x1.460aa64c2f838p-7, chars_format::general, 2, "0.01"},
1007     {0x1.978d4fdf3b645p-4, chars_format::general, 2, "0.099"},
1008     {0x1.978d4fdf3b646p-4, chars_format::general, 2, "0.1"},
1009     {0x1.fd70a3d70a3d7p-1, chars_format::general, 2, "0.99"},
1010     {0x1.fd70a3d70a3d8p-1, chars_format::general, 2, "1"},
1011     {0x1.3e66666666666p+3, chars_format::general, 2, "9.9"},
1012     {0x1.3e66666666667p+3, chars_format::general, 2, "10"},
1013     {0x1.8dfffffffffffp+6, chars_format::general, 2, "99"},
1014     {0x1.8e00000000000p+6, chars_format::general, 2, "1e+02"},
1015     {0x1.a3387ecc8eb96p-14, chars_format::general, 3, "9.99e-05"},
1016     {0x1.a3387ecc8eb97p-14, chars_format::general, 3, "0.0001"},
1017     {0x1.06034f3fd933ep-10, chars_format::general, 3, "0.000999"},
1018     {0x1.06034f3fd933fp-10, chars_format::general, 3, "0.001"},
1019     {0x1.4784230fcf80dp-7, chars_format::general, 3, "0.00999"},
1020     {0x1.4784230fcf80ep-7, chars_format::general, 3, "0.01"},
1021     {0x1.99652bd3c3611p-4, chars_format::general, 3, "0.0999"},
1022     {0x1.99652bd3c3612p-4, chars_format::general, 3, "0.1"},
1023     {0x1.ffbe76c8b4395p-1, chars_format::general, 3, "0.999"},
1024     {0x1.ffbe76c8b4396p-1, chars_format::general, 3, "1"},
1025     {0x1.3fd70a3d70a3dp+3, chars_format::general, 3, "9.99"},
1026     {0x1.3fd70a3d70a3ep+3, chars_format::general, 3, "10"},
1027     {0x1.8fcccccccccccp+6, chars_format::general, 3, "99.9"},
1028     {0x1.8fccccccccccdp+6, chars_format::general, 3, "100"},
1029     {0x1.f3bffffffffffp+9, chars_format::general, 3, "999"},
1030     {0x1.f3c0000000000p+9, chars_format::general, 3, "1e+03"},
1031     {0x1.a368d04e0ba6ap-14, chars_format::general, 4, "9.999e-05"},
1032     {0x1.a368d04e0ba6bp-14, chars_format::general, 4, "0.0001"},
1033     {0x1.06218230c7482p-10, chars_format::general, 4, "0.0009999"},
1034     {0x1.06218230c7483p-10, chars_format::general, 4, "0.001"},
1035     {0x1.47a9e2bcf91a3p-7, chars_format::general, 4, "0.009999"},
1036     {0x1.47a9e2bcf91a4p-7, chars_format::general, 4, "0.01"},
1037     {0x1.99945b6c3760bp-4, chars_format::general, 4, "0.09999"},
1038     {0x1.99945b6c3760cp-4, chars_format::general, 4, "0.1"},
1039     {0x1.fff972474538ep-1, chars_format::general, 4, "0.9999"},
1040     {0x1.fff972474538fp-1, chars_format::general, 4, "1"},
1041     {0x1.3ffbe76c8b439p+3, chars_format::general, 4, "9.999"},
1042     {0x1.3ffbe76c8b43ap+3, chars_format::general, 4, "10"},
1043     {0x1.8ffae147ae147p+6, chars_format::general, 4, "99.99"},
1044     {0x1.8ffae147ae148p+6, chars_format::general, 4, "100"},
1045     {0x1.f3f9999999999p+9, chars_format::general, 4, "999.9"},
1046     {0x1.f3f999999999ap+9, chars_format::general, 4, "1000"},
1047     {0x1.387bfffffffffp+13, chars_format::general, 4, "9999"},
1048     {0x1.387c000000000p+13, chars_format::general, 4, "1e+04"},
1049     {0x1.a36da54164f19p-14, chars_format::general, 5, "9.9999e-05"},
1050     {0x1.a36da54164f1ap-14, chars_format::general, 5, "0.0001"},
1051     {0x1.06248748df16fp-10, chars_format::general, 5, "0.00099999"},
1052     {0x1.06248748df170p-10, chars_format::general, 5, "0.001"},
1053     {0x1.47ada91b16dcbp-7, chars_format::general, 5, "0.0099999"},
1054     {0x1.47ada91b16dccp-7, chars_format::general, 5, "0.01"},
1055     {0x1.99991361dc93ep-4, chars_format::general, 5, "0.099999"},
1056     {0x1.99991361dc93fp-4, chars_format::general, 5, "0.1"},
1057     {0x1.ffff583a53b8ep-1, chars_format::general, 5, "0.99999"},
1058     {0x1.ffff583a53b8fp-1, chars_format::general, 5, "1"},
1059     {0x1.3fff972474538p+3, chars_format::general, 5, "9.9999"},
1060     {0x1.3fff972474539p+3, chars_format::general, 5, "10"},
1061     {0x1.8fff7ced91687p+6, chars_format::general, 5, "99.999"},
1062     {0x1.8fff7ced91688p+6, chars_format::general, 5, "100"},
1063     {0x1.f3ff5c28f5c28p+9, chars_format::general, 5, "999.99"},
1064     {0x1.f3ff5c28f5c29p+9, chars_format::general, 5, "1000"},
1065     {0x1.387f999999999p+13, chars_format::general, 5, "9999.9"},
1066     {0x1.387f99999999ap+13, chars_format::general, 5, "10000"},
1067     {0x1.869f7ffffffffp+16, chars_format::general, 5, "99999"},
1068     {0x1.869f800000000p+16, chars_format::general, 5, "1e+05"},
1069     {0x1.a36e20f35445dp-14, chars_format::general, 6, "9.99999e-05"},
1070     {0x1.a36e20f35445ep-14, chars_format::general, 6, "0.0001"},
1071     {0x1.0624d49814abap-10, chars_format::general, 6, "0.000999999"},
1072     {0x1.0624d49814abbp-10, chars_format::general, 6, "0.001"},
1073     {0x1.47ae09be19d69p-7, chars_format::general, 6, "0.00999999"},
1074     {0x1.47ae09be19d6ap-7, chars_format::general, 6, "0.01"},
1075     {0x1.99998c2da04c3p-4, chars_format::general, 6, "0.0999999"},
1076     {0x1.99998c2da04c4p-4, chars_format::general, 6, "0.1"},
1077     {0x1.ffffef39085f4p-1, chars_format::general, 6, "0.999999"},
1078     {0x1.ffffef39085f5p-1, chars_format::general, 6, "1"},
1079     {0x1.3ffff583a53b8p+3, chars_format::general, 6, "9.99999"},
1080     {0x1.3ffff583a53b9p+3, chars_format::general, 6, "10"},
1081     {0x1.8ffff2e48e8a7p+6, chars_format::general, 6, "99.9999"},
1082     {0x1.8ffff2e48e8a8p+6, chars_format::general, 6, "100"},
1083     {0x1.f3ffef9db22d0p+9, chars_format::general, 6, "999.999"},
1084     {0x1.f3ffef9db22d1p+9, chars_format::general, 6, "1000"},
1085     {0x1.387ff5c28f5c2p+13, chars_format::general, 6, "9999.99"},
1086     {0x1.387ff5c28f5c3p+13, chars_format::general, 6, "10000"},
1087     {0x1.869ff33333333p+16, chars_format::general, 6, "99999.9"},
1088     {0x1.869ff33333334p+16, chars_format::general, 6, "100000"},
1089     {0x1.e847effffffffp+19, chars_format::general, 6, "999999"},
1090     {0x1.e847f00000000p+19, chars_format::general, 6, "1e+06"},
1091     {0x1.a36e2d51ec34bp-14, chars_format::general, 7, "9.999999e-05"},
1092     {0x1.a36e2d51ec34cp-14, chars_format::general, 7, "0.0001"},
1093     {0x1.0624dc5333a0ep-10, chars_format::general, 7, "0.0009999999"},
1094     {0x1.0624dc5333a0fp-10, chars_format::general, 7, "0.001"},
1095     {0x1.47ae136800892p-7, chars_format::general, 7, "0.009999999"},
1096     {0x1.47ae136800893p-7, chars_format::general, 7, "0.01"},
1097     {0x1.9999984200ab7p-4, chars_format::general, 7, "0.09999999"},
1098     {0x1.9999984200ab8p-4, chars_format::general, 7, "0.1"},
1099     {0x1.fffffe5280d65p-1, chars_format::general, 7, "0.9999999"},
1100     {0x1.fffffe5280d66p-1, chars_format::general, 7, "1"},
1101     {0x1.3ffffef39085fp+3, chars_format::general, 7, "9.999999"},
1102     {0x1.3ffffef390860p+3, chars_format::general, 7, "10"},
1103     {0x1.8ffffeb074a77p+6, chars_format::general, 7, "99.99999"},
1104     {0x1.8ffffeb074a78p+6, chars_format::general, 7, "100"},
1105     {0x1.f3fffe5c91d14p+9, chars_format::general, 7, "999.9999"},
1106     {0x1.f3fffe5c91d15p+9, chars_format::general, 7, "1000"},
1107     {0x1.387ffef9db22dp+13, chars_format::general, 7, "9999.999"},
1108     {0x1.387ffef9db22ep+13, chars_format::general, 7, "10000"},
1109     {0x1.869ffeb851eb8p+16, chars_format::general, 7, "99999.99"},
1110     {0x1.869ffeb851eb9p+16, chars_format::general, 7, "100000"},
1111     {0x1.e847fe6666666p+19, chars_format::general, 7, "999999.9"},
1112     {0x1.e847fe6666667p+19, chars_format::general, 7, "1000000"},
1113     {0x1.312cfefffffffp+23, chars_format::general, 7, "9999999"},
1114     {0x1.312cff0000000p+23, chars_format::general, 7, "1e+07"},
1115     {0x1.a36e2e8e94ffcp-14, chars_format::general, 8, "9.9999999e-05"},
1116     {0x1.a36e2e8e94ffdp-14, chars_format::general, 8, "0.0001"},
1117     {0x1.0624dd191d1fdp-10, chars_format::general, 8, "0.00099999999"},
1118     {0x1.0624dd191d1fep-10, chars_format::general, 8, "0.001"},
1119     {0x1.47ae145f6467dp-7, chars_format::general, 8, "0.0099999999"},
1120     {0x1.47ae145f6467ep-7, chars_format::general, 8, "0.01"},
1121     {0x1.999999773d81cp-4, chars_format::general, 8, "0.099999999"},
1122     {0x1.999999773d81dp-4, chars_format::general, 8, "0.1"},
1123     {0x1.ffffffd50ce23p-1, chars_format::general, 8, "0.99999999"},
1124     {0x1.ffffffd50ce24p-1, chars_format::general, 8, "1"},
1125     {0x1.3fffffe5280d6p+3, chars_format::general, 8, "9.9999999"},
1126     {0x1.3fffffe5280d7p+3, chars_format::general, 8, "10"},
1127     {0x1.8fffffde7210bp+6, chars_format::general, 8, "99.999999"},
1128     {0x1.8fffffde7210cp+6, chars_format::general, 8, "100"},
1129     {0x1.f3ffffd60e94ep+9, chars_format::general, 8, "999.99999"},
1130     {0x1.f3ffffd60e94fp+9, chars_format::general, 8, "1000"},
1131     {0x1.387fffe5c91d1p+13, chars_format::general, 8, "9999.9999"},
1132     {0x1.387fffe5c91d2p+13, chars_format::general, 8, "10000"},
1133     {0x1.869fffdf3b645p+16, chars_format::general, 8, "99999.999"},
1134     {0x1.869fffdf3b646p+16, chars_format::general, 8, "100000"},
1135     {0x1.e847ffd70a3d7p+19, chars_format::general, 8, "999999.99"},
1136     {0x1.e847ffd70a3d8p+19, chars_format::general, 8, "1000000"},
1137     {0x1.312cffe666666p+23, chars_format::general, 8, "9999999.9"},
1138     {0x1.312cffe666667p+23, chars_format::general, 8, "10000000"},
1139     {0x1.7d783fdffffffp+26, chars_format::general, 8, "99999999"},
1140     {0x1.7d783fe000000p+26, chars_format::general, 8, "1e+08"},
1141     {0x1.a36e2eae3f7a7p-14, chars_format::general, 9, "9.99999999e-05"},
1142     {0x1.a36e2eae3f7a8p-14, chars_format::general, 9, "0.0001"},
1143     {0x1.0624dd2ce7ac8p-10, chars_format::general, 9, "0.000999999999"},
1144     {0x1.0624dd2ce7ac9p-10, chars_format::general, 9, "0.001"},
1145     {0x1.47ae14782197bp-7, chars_format::general, 9, "0.00999999999"},
1146     {0x1.47ae14782197cp-7, chars_format::general, 9, "0.01"},
1147     {0x1.9999999629fd9p-4, chars_format::general, 9, "0.0999999999"},
1148     {0x1.9999999629fdap-4, chars_format::general, 9, "0.1"},
1149     {0x1.fffffffbb47d0p-1, chars_format::general, 9, "0.999999999"},
1150     {0x1.fffffffbb47d1p-1, chars_format::general, 9, "1"},
1151     {0x1.3ffffffd50ce2p+3, chars_format::general, 9, "9.99999999"},
1152     {0x1.3ffffffd50ce3p+3, chars_format::general, 9, "10"},
1153     {0x1.8ffffffca501ap+6, chars_format::general, 9, "99.9999999"},
1154     {0x1.8ffffffca501bp+6, chars_format::general, 9, "100"},
1155     {0x1.f3fffffbce421p+9, chars_format::general, 9, "999.999999"},
1156     {0x1.f3fffffbce422p+9, chars_format::general, 9, "1000"},
1157     {0x1.387ffffd60e94p+13, chars_format::general, 9, "9999.99999"},
1158     {0x1.387ffffd60e95p+13, chars_format::general, 9, "10000"},
1159     {0x1.869ffffcb923ap+16, chars_format::general, 9, "99999.9999"},
1160     {0x1.869ffffcb923bp+16, chars_format::general, 9, "100000"},
1161     {0x1.e847fffbe76c8p+19, chars_format::general, 9, "999999.999"},
1162     {0x1.e847fffbe76c9p+19, chars_format::general, 9, "1000000"},
1163     {0x1.312cfffd70a3dp+23, chars_format::general, 9, "9999999.99"},
1164     {0x1.312cfffd70a3ep+23, chars_format::general, 9, "10000000"},
1165     {0x1.7d783ffccccccp+26, chars_format::general, 9, "99999999.9"},
1166     {0x1.7d783ffcccccdp+26, chars_format::general, 9, "100000000"},
1167     {0x1.dcd64ffbfffffp+29, chars_format::general, 9, "999999999"},
1168     {0x1.dcd64ffc00000p+29, chars_format::general, 9, "1e+09"},
1169     {0x1.a36e2eb16a205p-14, chars_format::general, 10, "9.999999999e-05"},
1170     {0x1.a36e2eb16a206p-14, chars_format::general, 10, "0.0001"},
1171     {0x1.0624dd2ee2543p-10, chars_format::general, 10, "0.0009999999999"},
1172     {0x1.0624dd2ee2544p-10, chars_format::general, 10, "0.001"},
1173     {0x1.47ae147a9ae94p-7, chars_format::general, 10, "0.009999999999"},
1174     {0x1.47ae147a9ae95p-7, chars_format::general, 10, "0.01"},
1175     {0x1.9999999941a39p-4, chars_format::general, 10, "0.09999999999"},
1176     {0x1.9999999941a3ap-4, chars_format::general, 10, "0.1"},
1177     {0x1.ffffffff920c8p-1, chars_format::general, 10, "0.9999999999"},
1178     {0x1.ffffffff920c9p-1, chars_format::general, 10, "1"},
1179     {0x1.3fffffffbb47dp+3, chars_format::general, 10, "9.999999999"},
1180     {0x1.3fffffffbb47ep+3, chars_format::general, 10, "10"},
1181     {0x1.8fffffffaa19cp+6, chars_format::general, 10, "99.99999999"},
1182     {0x1.8fffffffaa19dp+6, chars_format::general, 10, "100"},
1183     {0x1.f3ffffff94a03p+9, chars_format::general, 10, "999.9999999"},
1184     {0x1.f3ffffff94a04p+9, chars_format::general, 10, "1000"},
1185     {0x1.387fffffbce42p+13, chars_format::general, 10, "9999.999999"},
1186     {0x1.387fffffbce43p+13, chars_format::general, 10, "10000"},
1187     {0x1.869fffffac1d2p+16, chars_format::general, 10, "99999.99999"},
1188     {0x1.869fffffac1d3p+16, chars_format::general, 10, "100000"},
1189     {0x1.e847ffff97247p+19, chars_format::general, 10, "999999.9999"},
1190     {0x1.e847ffff97248p+19, chars_format::general, 10, "1000000"},
1191     {0x1.312cffffbe76cp+23, chars_format::general, 10, "9999999.999"},
1192     {0x1.312cffffbe76dp+23, chars_format::general, 10, "10000000"},
1193     {0x1.7d783fffae147p+26, chars_format::general, 10, "99999999.99"},
1194     {0x1.7d783fffae148p+26, chars_format::general, 10, "100000000"},
1195     {0x1.dcd64fff99999p+29, chars_format::general, 10, "999999999.9"},
1196     {0x1.dcd64fff9999ap+29, chars_format::general, 10, "1000000000"},
1197     {0x1.2a05f1ffbffffp+33, chars_format::general, 10, "9999999999"},
1198     {0x1.2a05f1ffc0000p+33, chars_format::general, 10, "1e+10"},
1199     {0x1.a36e2eb1bb30fp-14, chars_format::general, 11, "9.9999999999e-05"},
1200     {0x1.a36e2eb1bb310p-14, chars_format::general, 11, "0.0001"},
1201     {0x1.0624dd2f14fe9p-10, chars_format::general, 11, "0.00099999999999"},
1202     {0x1.0624dd2f14feap-10, chars_format::general, 11, "0.001"},
1203     {0x1.47ae147ada3e3p-7, chars_format::general, 11, "0.0099999999999"},
1204     {0x1.47ae147ada3e4p-7, chars_format::general, 11, "0.01"},
1205     {0x1.9999999990cdcp-4, chars_format::general, 11, "0.099999999999"},
1206     {0x1.9999999990cddp-4, chars_format::general, 11, "0.1"},
1207     {0x1.fffffffff5014p-1, chars_format::general, 11, "0.99999999999"},
1208     {0x1.fffffffff5015p-1, chars_format::general, 11, "1"},
1209     {0x1.3ffffffff920cp+3, chars_format::general, 11, "9.9999999999"},
1210     {0x1.3ffffffff920dp+3, chars_format::general, 11, "10"},
1211     {0x1.8ffffffff768fp+6, chars_format::general, 11, "99.999999999"},
1212     {0x1.8ffffffff7690p+6, chars_format::general, 11, "100"},
1213     {0x1.f3fffffff5433p+9, chars_format::general, 11, "999.99999999"},
1214     {0x1.f3fffffff5434p+9, chars_format::general, 11, "1000"},
1215     {0x1.387ffffff94a0p+13, chars_format::general, 11, "9999.9999999"},
1216     {0x1.387ffffff94a1p+13, chars_format::general, 11, "10000"},
1217     {0x1.869ffffff79c8p+16, chars_format::general, 11, "99999.999999"},
1218     {0x1.869ffffff79c9p+16, chars_format::general, 11, "100000"},
1219     {0x1.e847fffff583ap+19, chars_format::general, 11, "999999.99999"},
1220     {0x1.e847fffff583bp+19, chars_format::general, 11, "1000000"},
1221     {0x1.312cfffff9724p+23, chars_format::general, 11, "9999999.9999"},
1222     {0x1.312cfffff9725p+23, chars_format::general, 11, "10000000"},
1223     {0x1.7d783ffff7cedp+26, chars_format::general, 11, "99999999.999"},
1224     {0x1.7d783ffff7ceep+26, chars_format::general, 11, "100000000"},
1225     {0x1.dcd64ffff5c28p+29, chars_format::general, 11, "999999999.99"},
1226     {0x1.dcd64ffff5c29p+29, chars_format::general, 11, "1000000000"},
1227     {0x1.2a05f1fff9999p+33, chars_format::general, 11, "9999999999.9"},
1228     {0x1.2a05f1fff999ap+33, chars_format::general, 11, "10000000000"},
1229     {0x1.74876e7ff7fffp+36, chars_format::general, 11, "99999999999"},
1230     {0x1.74876e7ff8000p+36, chars_format::general, 11, "1e+11"},
1231     {0x1.a36e2eb1c34c3p-14, chars_format::general, 12, "9.99999999999e-05"},
1232     {0x1.a36e2eb1c34c4p-14, chars_format::general, 12, "0.0001"},
1233     {0x1.0624dd2f1a0fap-10, chars_format::general, 12, "0.000999999999999"},
1234     {0x1.0624dd2f1a0fbp-10, chars_format::general, 12, "0.001"},
1235     {0x1.47ae147ae0938p-7, chars_format::general, 12, "0.00999999999999"},
1236     {0x1.47ae147ae0939p-7, chars_format::general, 12, "0.01"},
1237     {0x1.9999999998b86p-4, chars_format::general, 12, "0.0999999999999"},
1238     {0x1.9999999998b87p-4, chars_format::general, 12, "0.1"},
1239     {0x1.fffffffffee68p-1, chars_format::general, 12, "0.999999999999"},
1240     {0x1.fffffffffee69p-1, chars_format::general, 12, "1"},
1241     {0x1.3fffffffff501p+3, chars_format::general, 12, "9.99999999999"},
1242     {0x1.3fffffffff502p+3, chars_format::general, 12, "10"},
1243     {0x1.8fffffffff241p+6, chars_format::general, 12, "99.9999999999"},
1244     {0x1.8fffffffff242p+6, chars_format::general, 12, "100"},
1245     {0x1.f3fffffffeed1p+9, chars_format::general, 12, "999.999999999"},
1246     {0x1.f3fffffffeed2p+9, chars_format::general, 12, "1000"},
1247     {0x1.387fffffff543p+13, chars_format::general, 12, "9999.99999999"},
1248     {0x1.387fffffff544p+13, chars_format::general, 12, "10000"},
1249     {0x1.869fffffff294p+16, chars_format::general, 12, "99999.9999999"},
1250     {0x1.869fffffff295p+16, chars_format::general, 12, "100000"},
1251     {0x1.e847fffffef39p+19, chars_format::general, 12, "999999.999999"},
1252     {0x1.e847fffffef3ap+19, chars_format::general, 12, "1000000"},
1253     {0x1.312cffffff583p+23, chars_format::general, 12, "9999999.99999"},
1254     {0x1.312cffffff584p+23, chars_format::general, 12, "10000000"},
1255     {0x1.7d783fffff2e4p+26, chars_format::general, 12, "99999999.9999"},
1256     {0x1.7d783fffff2e5p+26, chars_format::general, 12, "100000000"},
1257     {0x1.dcd64ffffef9dp+29, chars_format::general, 12, "999999999.999"},
1258     {0x1.dcd64ffffef9ep+29, chars_format::general, 12, "1000000000"},
1259     {0x1.2a05f1ffff5c2p+33, chars_format::general, 12, "9999999999.99"},
1260     {0x1.2a05f1ffff5c3p+33, chars_format::general, 12, "10000000000"},
1261     {0x1.74876e7fff333p+36, chars_format::general, 12, "99999999999.9"},
1262     {0x1.74876e7fff334p+36, chars_format::general, 12, "100000000000"},
1263     {0x1.d1a94a1ffefffp+39, chars_format::general, 12, "999999999999"},
1264     {0x1.d1a94a1fff000p+39, chars_format::general, 12, "1e+12"},
1265     {0x1.a36e2eb1c41bbp-14, chars_format::general, 13, "9.999999999999e-05"},
1266     {0x1.a36e2eb1c41bcp-14, chars_format::general, 13, "0.0001"},
1267     {0x1.0624dd2f1a915p-10, chars_format::general, 13, "0.0009999999999999"},
1268     {0x1.0624dd2f1a916p-10, chars_format::general, 13, "0.001"},
1269     {0x1.47ae147ae135ap-7, chars_format::general, 13, "0.009999999999999"},
1270     {0x1.47ae147ae135bp-7, chars_format::general, 13, "0.01"},
1271     {0x1.9999999999831p-4, chars_format::general, 13, "0.09999999999999"},
1272     {0x1.9999999999832p-4, chars_format::general, 13, "0.1"},
1273     {0x1.ffffffffffe3dp-1, chars_format::general, 13, "0.9999999999999"},
1274     {0x1.ffffffffffe3ep-1, chars_format::general, 13, "1"},
1275     {0x1.3fffffffffee6p+3, chars_format::general, 13, "9.999999999999"},
1276     {0x1.3fffffffffee7p+3, chars_format::general, 13, "10"},
1277     {0x1.8fffffffffea0p+6, chars_format::general, 13, "99.99999999999"},
1278     {0x1.8fffffffffea1p+6, chars_format::general, 13, "100"},
1279     {0x1.f3ffffffffe48p+9, chars_format::general, 13, "999.9999999999"},
1280     {0x1.f3ffffffffe49p+9, chars_format::general, 13, "1000"},
1281     {0x1.387fffffffeedp+13, chars_format::general, 13, "9999.999999999"},
1282     {0x1.387fffffffeeep+13, chars_format::general, 13, "10000"},
1283     {0x1.869fffffffea8p+16, chars_format::general, 13, "99999.99999999"},
1284     {0x1.869fffffffea9p+16, chars_format::general, 13, "100000"},
1285     {0x1.e847ffffffe52p+19, chars_format::general, 13, "999999.9999999"},
1286     {0x1.e847ffffffe53p+19, chars_format::general, 13, "1000000"},
1287     {0x1.312cffffffef3p+23, chars_format::general, 13, "9999999.999999"},
1288     {0x1.312cffffffef4p+23, chars_format::general, 13, "10000000"},
1289     {0x1.7d783fffffeb0p+26, chars_format::general, 13, "99999999.99999"},
1290     {0x1.7d783fffffeb1p+26, chars_format::general, 13, "100000000"},
1291     {0x1.dcd64fffffe5cp+29, chars_format::general, 13, "999999999.9999"},
1292     {0x1.dcd64fffffe5dp+29, chars_format::general, 13, "1000000000"},
1293     {0x1.2a05f1ffffef9p+33, chars_format::general, 13, "9999999999.999"},
1294     {0x1.2a05f1ffffefap+33, chars_format::general, 13, "10000000000"},
1295     {0x1.74876e7fffeb8p+36, chars_format::general, 13, "99999999999.99"},
1296     {0x1.74876e7fffeb9p+36, chars_format::general, 13, "100000000000"},
1297     {0x1.d1a94a1fffe66p+39, chars_format::general, 13, "999999999999.9"},
1298     {0x1.d1a94a1fffe67p+39, chars_format::general, 13, "1000000000000"},
1299     {0x1.2309ce53ffeffp+43, chars_format::general, 13, "9999999999999"},
1300     {0x1.2309ce53fff00p+43, chars_format::general, 13, "1e+13"},
1301     {0x1.a36e2eb1c4307p-14, chars_format::general, 14, "9.9999999999999e-05"},
1302     {0x1.a36e2eb1c4308p-14, chars_format::general, 14, "0.0001"},
1303     {0x1.0624dd2f1a9e4p-10, chars_format::general, 14, "0.00099999999999999"},
1304     {0x1.0624dd2f1a9e5p-10, chars_format::general, 14, "0.001"},
1305     {0x1.47ae147ae145ep-7, chars_format::general, 14, "0.0099999999999999"},
1306     {0x1.47ae147ae145fp-7, chars_format::general, 14, "0.01"},
1307     {0x1.9999999999975p-4, chars_format::general, 14, "0.099999999999999"},
1308     {0x1.9999999999976p-4, chars_format::general, 14, "0.1"},
1309     {0x1.fffffffffffd2p-1, chars_format::general, 14, "0.99999999999999"},
1310     {0x1.fffffffffffd3p-1, chars_format::general, 14, "1"},
1311     {0x1.3ffffffffffe3p+3, chars_format::general, 14, "9.9999999999999"},
1312     {0x1.3ffffffffffe4p+3, chars_format::general, 14, "10"},
1313     {0x1.8ffffffffffdcp+6, chars_format::general, 14, "99.999999999999"},
1314     {0x1.8ffffffffffddp+6, chars_format::general, 14, "100"},
1315     {0x1.f3fffffffffd4p+9, chars_format::general, 14, "999.99999999999"},
1316     {0x1.f3fffffffffd5p+9, chars_format::general, 14, "1000"},
1317     {0x1.387ffffffffe4p+13, chars_format::general, 14, "9999.9999999999"},
1318     {0x1.387ffffffffe5p+13, chars_format::general, 14, "10000"},
1319     {0x1.869ffffffffddp+16, chars_format::general, 14, "99999.999999999"},
1320     {0x1.869ffffffffdep+16, chars_format::general, 14, "100000"},
1321     {0x1.e847fffffffd5p+19, chars_format::general, 14, "999999.99999999"},
1322     {0x1.e847fffffffd6p+19, chars_format::general, 14, "1000000"},
1323     {0x1.312cfffffffe5p+23, chars_format::general, 14, "9999999.9999999"},
1324     {0x1.312cfffffffe6p+23, chars_format::general, 14, "10000000"},
1325     {0x1.7d783ffffffdep+26, chars_format::general, 14, "99999999.999999"},
1326     {0x1.7d783ffffffdfp+26, chars_format::general, 14, "100000000"},
1327     {0x1.dcd64ffffffd6p+29, chars_format::general, 14, "999999999.99999"},
1328     {0x1.dcd64ffffffd7p+29, chars_format::general, 14, "1000000000"},
1329     {0x1.2a05f1fffffe5p+33, chars_format::general, 14, "9999999999.9999"},
1330     {0x1.2a05f1fffffe6p+33, chars_format::general, 14, "10000000000"},
1331     {0x1.74876e7ffffdfp+36, chars_format::general, 14, "99999999999.999"},
1332     {0x1.74876e7ffffe0p+36, chars_format::general, 14, "100000000000"},
1333     {0x1.d1a94a1ffffd7p+39, chars_format::general, 14, "999999999999.99"},
1334     {0x1.d1a94a1ffffd8p+39, chars_format::general, 14, "1000000000000"},
1335     {0x1.2309ce53fffe6p+43, chars_format::general, 14, "9999999999999.9"},
1336     {0x1.2309ce53fffe7p+43, chars_format::general, 14, "10000000000000"},
1337     {0x1.6bcc41e8fffdfp+46, chars_format::general, 14, "99999999999999"},
1338     {0x1.6bcc41e8fffe0p+46, chars_format::general, 14, "1e+14"},
1339     {0x1.a36e2eb1c4328p-14, chars_format::general, 15, "9.99999999999999e-05"},
1340     {0x1.a36e2eb1c4329p-14, chars_format::general, 15, "0.0001"},
1341     {0x1.0624dd2f1a9f9p-10, chars_format::general, 15, "0.000999999999999999"},
1342     {0x1.0624dd2f1a9fap-10, chars_format::general, 15, "0.001"},
1343     {0x1.47ae147ae1477p-7, chars_format::general, 15, "0.00999999999999999"},
1344     {0x1.47ae147ae1478p-7, chars_format::general, 15, "0.01"},
1345     {0x1.9999999999995p-4, chars_format::general, 15, "0.0999999999999999"},
1346     {0x1.9999999999996p-4, chars_format::general, 15, "0.1"},
1347     {0x1.ffffffffffffbp-1, chars_format::general, 15, "0.999999999999999"},
1348     {0x1.ffffffffffffcp-1, chars_format::general, 15, "1"},
1349     {0x1.3fffffffffffdp+3, chars_format::general, 15, "9.99999999999999"},
1350     {0x1.3fffffffffffep+3, chars_format::general, 15, "10"},
1351     {0x1.8fffffffffffcp+6, chars_format::general, 15, "99.9999999999999"},
1352     {0x1.8fffffffffffdp+6, chars_format::general, 15, "100"},
1353     {0x1.f3ffffffffffbp+9, chars_format::general, 15, "999.999999999999"},
1354     {0x1.f3ffffffffffcp+9, chars_format::general, 15, "1000"},
1355     {0x1.387fffffffffdp+13, chars_format::general, 15, "9999.99999999999"},
1356     {0x1.387fffffffffep+13, chars_format::general, 15, "10000"},
1357     {0x1.869fffffffffcp+16, chars_format::general, 15, "99999.9999999999"},
1358     {0x1.869fffffffffdp+16, chars_format::general, 15, "100000"},
1359     {0x1.e847ffffffffbp+19, chars_format::general, 15, "999999.999999999"},
1360     {0x1.e847ffffffffcp+19, chars_format::general, 15, "1000000"},
1361     {0x1.312cffffffffdp+23, chars_format::general, 15, "9999999.99999999"},
1362     {0x1.312cffffffffep+23, chars_format::general, 15, "10000000"},
1363     {0x1.7d783fffffffcp+26, chars_format::general, 15, "99999999.9999999"},
1364     {0x1.7d783fffffffdp+26, chars_format::general, 15, "100000000"},
1365     {0x1.dcd64fffffffbp+29, chars_format::general, 15, "999999999.999999"},
1366     {0x1.dcd64fffffffcp+29, chars_format::general, 15, "1000000000"},
1367     {0x1.2a05f1ffffffdp+33, chars_format::general, 15, "9999999999.99999"},
1368     {0x1.2a05f1ffffffep+33, chars_format::general, 15, "10000000000"},
1369     {0x1.74876e7fffffcp+36, chars_format::general, 15, "99999999999.9999"},
1370     {0x1.74876e7fffffdp+36, chars_format::general, 15, "100000000000"},
1371     {0x1.d1a94a1fffffbp+39, chars_format::general, 15, "999999999999.999"},
1372     {0x1.d1a94a1fffffcp+39, chars_format::general, 15, "1000000000000"},
1373     {0x1.2309ce53ffffdp+43, chars_format::general, 15, "9999999999999.99"},
1374     {0x1.2309ce53ffffep+43, chars_format::general, 15, "10000000000000"},
1375     {0x1.6bcc41e8ffffcp+46, chars_format::general, 15, "99999999999999.9"},
1376     {0x1.6bcc41e8ffffdp+46, chars_format::general, 15, "100000000000000"},
1377     {0x1.c6bf52633fffbp+49, chars_format::general, 15, "999999999999999"},
1378     {0x1.c6bf52633fffcp+49, chars_format::general, 15, "1e+15"},
1379     {0x1.1c37937e07fffp+53, chars_format::general, 16, "9999999999999998"},
1380     {0x1.1c37937e08000p+53, chars_format::general, 16, "1e+16"},
1381     {0x1.6345785d89fffp+56, chars_format::general, 17, "99999999999999984"},
1382     {0x1.6345785d8a000p+56, chars_format::general, 17, "1e+17"},
1383     {0x1.bc16d674ec7ffp+59, chars_format::general, 18, "999999999999999872"},
1384     {0x1.bc16d674ec800p+59, chars_format::general, 18, "1e+18"},
1385     {0x1.158e460913cffp+63, chars_format::general, 19, "9999999999999997952"},
1386     {0x1.158e460913d00p+63, chars_format::general, 19, "1e+19"},
1387     {0x1.5af1d78b58c3fp+66, chars_format::general, 20, "99999999999999983616"},
1388     {0x1.5af1d78b58c40p+66, chars_format::general, 20, "1e+20"},
1389     {0x1.b1ae4d6e2ef4fp+69, chars_format::general, 21, "999999999999999868928"},
1390     {0x1.b1ae4d6e2ef50p+69, chars_format::general, 21, "1e+21"},
1391     {0x1.0f0cf064dd591p+73, chars_format::general, 22, "9999999999999997902848"},
1392     {0x1.0f0cf064dd592p+73, chars_format::general, 22, "1e+22"},
1393     {0x1.52d02c7e14af6p+76, chars_format::general, 23, "99999999999999991611392"},
1394     {0x1.52d02c7e14af7p+76, chars_format::general, 23, "1.0000000000000000838861e+23"},
1395     {0x1.a784379d99db4p+79, chars_format::general, 24, "999999999999999983222784"},
1396     {0x1.a784379d99db5p+79, chars_format::general, 24, "1.00000000000000011744051e+24"},
1397     {0x1.a36e2eb1c432cp-14, chars_format::general, 25, "9.999999999999999123964645e-05"},
1398     {0x1.a36e2eb1c432dp-14, chars_format::general, 25, "0.0001000000000000000047921736"},
1399     {0x1.0624dd2f1a9fbp-10, chars_format::general, 25, "0.0009999999999999998039762472"},
1400     {0x1.0624dd2f1a9fcp-10, chars_format::general, 25, "0.001000000000000000020816682"},
1401     {0x1.47ae147ae147ap-7, chars_format::general, 25, "0.009999999999999998473443341"},
1402     {0x1.47ae147ae147bp-7, chars_format::general, 25, "0.01000000000000000020816682"},
1403     {0x1.9999999999999p-4, chars_format::general, 25, "0.09999999999999999167332732"},
1404     {0x1.999999999999ap-4, chars_format::general, 25, "0.1000000000000000055511151"},
1405     {0x1.fffffffffffffp-1, chars_format::general, 25, "0.9999999999999998889776975"},
1406     {0x1.0000000000000p+0, chars_format::general, 25, "1"},
1407     {0x1.3ffffffffffffp+3, chars_format::general, 25, "9.999999999999998223643161"},
1408     {0x1.4000000000000p+3, chars_format::general, 25, "10"},
1409     {0x1.8ffffffffffffp+6, chars_format::general, 25, "99.99999999999998578914528"},
1410     {0x1.9000000000000p+6, chars_format::general, 25, "100"},
1411     {0x1.f3fffffffffffp+9, chars_format::general, 25, "999.9999999999998863131623"},
1412     {0x1.f400000000000p+9, chars_format::general, 25, "1000"},
1413     {0x1.387ffffffffffp+13, chars_format::general, 25, "9999.999999999998181010596"},
1414     {0x1.3880000000000p+13, chars_format::general, 25, "10000"},
1415     {0x1.869ffffffffffp+16, chars_format::general, 25, "99999.99999999998544808477"},
1416     {0x1.86a0000000000p+16, chars_format::general, 25, "100000"},
1417     {0x1.e847fffffffffp+19, chars_format::general, 25, "999999.9999999998835846782"},
1418     {0x1.e848000000000p+19, chars_format::general, 25, "1000000"},
1419     {0x1.312cfffffffffp+23, chars_format::general, 25, "9999999.999999998137354851"},
1420     {0x1.312d000000000p+23, chars_format::general, 25, "10000000"},
1421     {0x1.7d783ffffffffp+26, chars_format::general, 25, "99999999.99999998509883881"},
1422     {0x1.7d78400000000p+26, chars_format::general, 25, "100000000"},
1423     {0x1.dcd64ffffffffp+29, chars_format::general, 25, "999999999.9999998807907104"},
1424     {0x1.dcd6500000000p+29, chars_format::general, 25, "1000000000"},
1425     {0x1.2a05f1fffffffp+33, chars_format::general, 25, "9999999999.999998092651367"},
1426     {0x1.2a05f20000000p+33, chars_format::general, 25, "10000000000"},
1427     {0x1.74876e7ffffffp+36, chars_format::general, 25, "99999999999.99998474121094"},
1428     {0x1.74876e8000000p+36, chars_format::general, 25, "100000000000"},
1429     {0x1.d1a94a1ffffffp+39, chars_format::general, 25, "999999999999.9998779296875"},
1430     {0x1.d1a94a2000000p+39, chars_format::general, 25, "1000000000000"},
1431     {0x1.2309ce53fffffp+43, chars_format::general, 25, "9999999999999.998046875"},
1432     {0x1.2309ce5400000p+43, chars_format::general, 25, "10000000000000"},
1433     {0x1.6bcc41e8fffffp+46, chars_format::general, 25, "99999999999999.984375"},
1434     {0x1.6bcc41e900000p+46, chars_format::general, 25, "100000000000000"},
1435     {0x1.c6bf52633ffffp+49, chars_format::general, 25, "999999999999999.875"},
1436     {0x1.c6bf526340000p+49, chars_format::general, 25, "1000000000000000"},
1437     {0x1.1c37937e07fffp+53, chars_format::general, 25, "9999999999999998"},
1438     {0x1.1c37937e08000p+53, chars_format::general, 25, "10000000000000000"},
1439     {0x1.6345785d89fffp+56, chars_format::general, 25, "99999999999999984"},
1440     {0x1.6345785d8a000p+56, chars_format::general, 25, "100000000000000000"},
1441     {0x1.bc16d674ec7ffp+59, chars_format::general, 25, "999999999999999872"},
1442     {0x1.bc16d674ec800p+59, chars_format::general, 25, "1000000000000000000"},
1443     {0x1.158e460913cffp+63, chars_format::general, 25, "9999999999999997952"},
1444     {0x1.158e460913d00p+63, chars_format::general, 25, "10000000000000000000"},
1445     {0x1.5af1d78b58c3fp+66, chars_format::general, 25, "99999999999999983616"},
1446     {0x1.5af1d78b58c40p+66, chars_format::general, 25, "100000000000000000000"},
1447     {0x1.b1ae4d6e2ef4fp+69, chars_format::general, 25, "999999999999999868928"},
1448     {0x1.b1ae4d6e2ef50p+69, chars_format::general, 25, "1000000000000000000000"},
1449     {0x1.0f0cf064dd591p+73, chars_format::general, 25, "9999999999999997902848"},
1450     {0x1.0f0cf064dd592p+73, chars_format::general, 25, "10000000000000000000000"},
1451     {0x1.52d02c7e14af6p+76, chars_format::general, 25, "99999999999999991611392"},
1452     {0x1.52d02c7e14af7p+76, chars_format::general, 25, "100000000000000008388608"},
1453     {0x1.a784379d99db4p+79, chars_format::general, 25, "999999999999999983222784"},
1454     {0x1.a784379d99db5p+79, chars_format::general, 25, "1000000000000000117440512"},
1455     {0x1.08b2a2c280290p+83, chars_format::general, 25, "9999999999999998758486016"},
1456     {0x1.08b2a2c280291p+83, chars_format::general, 25, "1.000000000000000090596966e+25"},
1457     {0x1.4adf4b7320334p+86, chars_format::general, 26, "99999999999999987584860160"},
1458     {0x1.4adf4b7320335p+86, chars_format::general, 26, "1.0000000000000000476472934e+26"},
1459     {0x1.9d971e4fe8401p+89, chars_format::general, 27, "999999999999999875848601600"},
1460     {0x1.9d971e4fe8402p+89, chars_format::general, 27, "1.00000000000000001328755507e+27"},
1461     {0x1.027e72f1f1281p+93, chars_format::general, 28, "9999999999999999583119736832"},
1462     {0x1.027e72f1f1282p+93, chars_format::general, 28, "1.000000000000000178214299238e+28"},
1463     {0x1.431e0fae6d721p+96, chars_format::general, 29, "99999999999999991433150857216"},
1464     {0x1.431e0fae6d722p+96, chars_format::general, 29, "1.0000000000000000902533690163e+29"},
1465     {0x1.93e5939a08ce9p+99, chars_format::general, 30, "999999999999999879147136483328"},
1466     {0x1.93e5939a08ceap+99, chars_format::general, 30, "1.00000000000000001988462483866e+30"},
1467     {0x1.f8def8808b024p+102, chars_format::general, 31, "9999999999999999635896294965248"},
1468     {0x1.f8def8808b025p+102, chars_format::general, 31, "1.000000000000000076179620180787e+31"},
1469     {0x1.3b8b5b5056e16p+106, chars_format::general, 32, "99999999999999987351763694911488"},
1470     {0x1.3b8b5b5056e17p+106, chars_format::general, 32, "1.0000000000000000536616220439347e+32"},
1471     {0x1.8a6e32246c99cp+109, chars_format::general, 33, "999999999999999945575230987042816"},
1472     {0x1.8a6e32246c99dp+109, chars_format::general, 33, "1.00000000000000008969041906289869e+33"},
1473     {0x1.ed09bead87c03p+112, chars_format::general, 34, "9999999999999999455752309870428160"},
1474     {0x1.ed09bead87c04p+112, chars_format::general, 34, "1.000000000000000060867381447727514e+34"},
1475     {0x1.3426172c74d82p+116, chars_format::general, 35, "99999999999999996863366107917975552"},
1476     {0x1.3426172c74d83p+116, chars_format::general, 35, "1.0000000000000001531011018162752717e+35"},
1477     {0x1.812f9cf7920e2p+119, chars_format::general, 36, "999999999999999894846684784341549056"},
1478     {0x1.812f9cf7920e3p+119, chars_format::general, 36, "1.00000000000000004242063737401796198e+36"},
1479     {0x1.e17b84357691bp+122, chars_format::general, 37, "9999999999999999538762658202121142272"},
1480     {0x1.e17b84357691cp+122, chars_format::general, 37, "1.00000000000000007193542789195324457e+37"},
1481     {0x1.2ced32a16a1b1p+126, chars_format::general, 38, "99999999999999997748809823456034029568"},
1482     {0x1.2ced32a16a1b2p+126, chars_format::general, 38, "1.0000000000000001663827575493461488435e+38"},
1483     {0x1.78287f49c4a1dp+129, chars_format::general, 39, "999999999999999939709166371603178586112"},
1484     {0x1.78287f49c4a1ep+129, chars_format::general, 39, "1.00000000000000009082489382343182542438e+39"},
1485     {0x1.d6329f1c35ca4p+132, chars_format::general, 40, "9999999999999999094860208812374492184576"},
1486     {0x1.d6329f1c35ca5p+132, chars_format::general, 40, "1.000000000000000030378602842700366689075e+40"},
1487     {0x1.25dfa371a19e6p+136, chars_format::general, 41, "99999999999999981277195531206711524196352"},
1488     {0x1.25dfa371a19e7p+136, chars_format::general, 41, "1.0000000000000000062000864504077831949517e+41"},
1489     {0x1.6f578c4e0a060p+139, chars_format::general, 42, "999999999999999890143207767403382423158784"},
1490     {0x1.6f578c4e0a061p+139, chars_format::general, 42, "1.00000000000000004488571267807591678554931e+42"},
1491     {0x1.cb2d6f618c878p+142, chars_format::general, 43, "9999999999999998901432077674033824231587840"},
1492     {0x1.cb2d6f618c879p+142, chars_format::general, 43, "1.000000000000000013937211695941409913071206e+43"},
1493     {0x1.1efc659cf7d4bp+146, chars_format::general, 44, "99999999999999989014320776740338242315878400"},
1494     {0x1.1efc659cf7d4cp+146, chars_format::general, 44, "1.0000000000000000882136140530642264070186598e+44"},
1495     {0x1.66bb7f0435c9ep+149, chars_format::general, 45, "999999999999999929757289024535551219930759168"},
1496     {0x1.66bb7f0435c9fp+149, chars_format::general, 45, "1.00000000000000008821361405306422640701865984e+45"},
1497     {0x1.c06a5ec5433c6p+152, chars_format::general, 46, "9999999999999999931398190359470212947659194368"},
1498     {0x1.c06a5ec5433c7p+152, chars_format::general, 46, "1.000000000000000119904879058769961444436239974e+46"},
1499     {0x1.18427b3b4a05bp+156, chars_format::general, 47, "99999999999999984102174700855949311516153479168"},
1500     {0x1.18427b3b4a05cp+156, chars_format::general, 47, "1.0000000000000000438458430450761973546340476518e+47"},
1501     {0x1.5e531a0a1c872p+159, chars_format::general, 48, "999999999999999881586566215862833963056037363712"},
1502     {0x1.5e531a0a1c873p+159, chars_format::general, 48, "1.00000000000000004384584304507619735463404765184e+48"},
1503     {0x1.b5e7e08ca3a8fp+162, chars_format::general, 49, "9999999999999999464902769475481793196872414789632"},
1504     {0x1.b5e7e08ca3a90p+162, chars_format::general, 49, "1.000000000000000076297698410918870032949649709466e+49"},
1505     {0x1.11b0ec57e6499p+166, chars_format::general, 50, "99999999999999986860582406952576489172979654066176"},
1506     {0x1.11b0ec57e649ap+166, chars_format::general, 50, "1.0000000000000000762976984109188700329496497094656e+50"},
1507     {0x1.561d276ddfdc0p+169, chars_format::general, 51, "999999999999999993220948674361627976461708441944064"},
1508     {0x1.561d276ddfdc1p+169, chars_format::general, 51, "1.00000000000000015937444814747611208943759097698714e+51"},
1509     {0x1.aba4714957d30p+172, chars_format::general, 52, "9999999999999999932209486743616279764617084419440640"},
1510     {0x1.aba4714957d31p+172, chars_format::general, 52, "1.000000000000000126143748252853215266842414469978522e+52"},
1511     {0x1.0b46c6cdd6e3ep+176, chars_format::general, 53, "99999999999999999322094867436162797646170844194406400"},
1512     {0x1.0b46c6cdd6e3fp+176, chars_format::general, 53, "1.0000000000000002058974279999481676410708380867991962e+53"},
1513     {0x1.4e1878814c9cdp+179, chars_format::general, 54, "999999999999999908150356944127012110618056584002011136"},
1514     {0x1.4e1878814c9cep+179, chars_format::general, 54, "1.00000000000000007829154040459624384230536029988611686e+54"},
1515     {0x1.a19e96a19fc40p+182, chars_format::general, 55, "9999999999999998741221202520331657642805958408251899904"},
1516     {0x1.a19e96a19fc41p+182, chars_format::general, 55, "1.000000000000000010235067020408551149630438813532474573e+55"},
1517     {0x1.05031e2503da8p+186, chars_format::general, 56, "99999999999999987412212025203316576428059584082518999040"},
1518     {0x1.05031e2503da9p+186, chars_format::general, 56,
1519         "1.0000000000000000919028350814337823808403445971568453222e+56"},
1520     {0x1.4643e5ae44d12p+189, chars_format::general, 57, "999999999999999874122120252033165764280595840825189990400"},
1521     {0x1.4643e5ae44d13p+189, chars_format::general, 57,
1522         "1.00000000000000004834669211555365905752839484589051425587e+57"},
1523     {0x1.97d4df19d6057p+192, chars_format::general, 58, "9999999999999999438119489974413630815797154428513196965888"},
1524     {0x1.97d4df19d6058p+192, chars_format::general, 58,
1525         "1.000000000000000083191606488257757716177954646903579108966e+58"},
1526     {0x1.fdca16e04b86dp+195, chars_format::general, 59, "99999999999999997168788049560464200849936328366177157906432"},
1527     {0x1.fdca16e04b86ep+195, chars_format::general, 59,
1528         "1.0000000000000000831916064882577577161779546469035791089664e+59"},
1529     {0x1.3e9e4e4c2f344p+199, chars_format::general, 60, "999999999999999949387135297074018866963645011013410073083904"},
1530     {0x1.3e9e4e4c2f345p+199, chars_format::general, 60,
1531         "1.00000000000000012779309688531900399924939119220030212092723e+60"},
1532     {0x1.8e45e1df3b015p+202, chars_format::general, 61,
1533         "9999999999999999493871352970740188669636450110134100730839040"},
1534     {0x1.8e45e1df3b016p+202, chars_format::general, 61,
1535         "1.000000000000000092111904567670006972792241955962923711358566e+61"},
1536     {0x1.f1d75a5709c1ap+205, chars_format::general, 62,
1537         "99999999999999992084218144295482124579792562202350734542897152"},
1538     {0x1.f1d75a5709c1bp+205, chars_format::general, 62,
1539         "1.0000000000000000350219968594316117304608031779831182560487014e+62"},
1540     {0x1.3726987666190p+209, chars_format::general, 63,
1541         "999999999999999875170255276364105051932774599639662981181079552"},
1542     {0x1.3726987666191p+209, chars_format::general, 63,
1543         "1.00000000000000005785795994272696982739337868917504043817264742e+63"},
1544     {0x1.84f03e93ff9f4p+212, chars_format::general, 64,
1545         "9999999999999998751702552763641050519327745996396629811810795520"},
1546     {0x1.84f03e93ff9f5p+212, chars_format::general, 64,
1547         "1.00000000000000002132041900945439687230125787126796494677433385e+64"},
1548     {0x1.e62c4e38ff872p+215, chars_format::general, 65,
1549         "99999999999999999209038626283633850822756121694230455365568299008"},
1550     {0x1.e62c4e38ff873p+215, chars_format::general, 65,
1551         "1.0000000000000001090105172493085719645223478342449461261302864282e+65"},
1552     {0x1.2fdbb0e39fb47p+219, chars_format::general, 66,
1553         "999999999999999945322333868247445125709646570021247924665841614848"},
1554     {0x1.2fdbb0e39fb48p+219, chars_format::general, 66,
1555         "1.00000000000000013239454344660301865578130515770547444062520711578e+66"},
1556     {0x1.7bd29d1c87a19p+222, chars_format::general, 67,
1557         "9999999999999999827367757839185598317239782875580932278577147150336"},
1558     {0x1.7bd29d1c87a1ap+222, chars_format::general, 67,
1559         "1.000000000000000132394543446603018655781305157705474440625207115776e+67"},
1560     {0x1.dac74463a989fp+225, chars_format::general, 68,
1561         "99999999999999995280522225138166806691251291352861698530421623488512"},
1562     {0x1.dac74463a98a0p+225, chars_format::general, 68,
1563         "1.000000000000000072531436381529235126158374409646521955518210155479e+68"},
1564     {0x1.28bc8abe49f63p+229, chars_format::general, 69,
1565         "999999999999999880969493773293127831364996015857874003175819882528768"},
1566     {0x1.28bc8abe49f64p+229, chars_format::general, 69,
1567         "1.00000000000000007253143638152923512615837440964652195551821015547904e+69"},
1568     {0x1.72ebad6ddc73cp+232, chars_format::general, 70,
1569         "9999999999999999192818822949403492903236716946156035936442979371188224"},
1570     {0x1.72ebad6ddc73dp+232, chars_format::general, 70,
1571         "1.00000000000000007253143638152923512615837440964652195551821015547904e+70"},
1572     {0x1.cfa698c95390bp+235, chars_format::general, 71,
1573         "99999999999999991928188229494034929032367169461560359364429793711882240"},
1574     {0x1.cfa698c95390cp+235, chars_format::general, 71,
1575         "1.0000000000000000418815255642114579589914338666403382831434277118069965e+71"},
1576     {0x1.21c81f7dd43a7p+239, chars_format::general, 72,
1577         "999999999999999943801810948794571024057224129020550531544123892056457216"},
1578     {0x1.21c81f7dd43a8p+239, chars_format::general, 72,
1579         "1.00000000000000013996124017962834489392564360426012603474273153155753574e+72"},
1580     {0x1.6a3a275d49491p+242, chars_format::general, 73,
1581         "9999999999999999830336967949613257980309080240684656321838454199566729216"},
1582     {0x1.6a3a275d49492p+242, chars_format::general, 73,
1583         "1.000000000000000139961240179628344893925643604260126034742731531557535744e+73"},
1584     {0x1.c4c8b1349b9b5p+245, chars_format::general, 74,
1585         "99999999999999995164818811802792197885196090803013355167206819763650035712"},
1586     {0x1.c4c8b1349b9b6p+245, chars_format::general, 74,
1587         "1.000000000000000077190222825761537255567749372183461873719177086917190615e+74"},
1588     {0x1.1afd6ec0e1411p+249, chars_format::general, 75,
1589         "999999999999999926539781176481198923508803215199467887262646419780362305536"},
1590     {0x1.1afd6ec0e1412p+249, chars_format::general, 75,
1591         "1.00000000000000012740703670885498336625406475784479320253802064262946671821e+75"},
1592     {0x1.61bcca7119915p+252, chars_format::general, 76,
1593         "9999999999999998863663300700064420349597509066704028242075715752105414230016"},
1594     {0x1.61bcca7119916p+252, chars_format::general, 76,
1595         "1.000000000000000047060134495905469589155960140786663076427870953489824953139e+76"},
1596     {0x1.ba2bfd0d5ff5bp+255, chars_format::general, 77,
1597         "99999999999999998278261272554585856747747644714015897553975120217811154108416"},
1598     {0x1.ba2bfd0d5ff5cp+255, chars_format::general, 77,
1599         "1.0000000000000001113376562662650806108344438344331671773159907048015383651942e+77"},
1600     {0x1.145b7e285bf98p+259, chars_format::general, 78,
1601         "999999999999999802805551768538947706777722104929947493053015898505313987330048"},
1602     {0x1.145b7e285bf99p+259, chars_format::general, 78,
1603         "1.00000000000000000849362143368970297614886992459876061589499910270279690590618e+78"},
1604     {0x1.59725db272f7fp+262, chars_format::general, 79,
1605         "9999999999999999673560075006595519222746403606649979913266024618633003221909504"},
1606     {0x1.59725db272f80p+262, chars_format::general, 79,
1607         "1.000000000000000131906463232780156137771558616400048489600189025221286657051853e+79"},
1608     {0x1.afcef51f0fb5ep+265, chars_format::general, 80,
1609         "99999999999999986862573406138718939297648940722396769236245052384850852127440896"},
1610     {0x1.afcef51f0fb5fp+265, chars_format::general, 80,
1611         "1.0000000000000000002660986470836727653740240118120080909813197745348975891631309e+80"},
1612     {0x1.0de1593369d1bp+269, chars_format::general, 81,
1613         "999999999999999921281879895665782741935503249059183851809998224123064148429897728"},
1614     {0x1.0de1593369d1cp+269, chars_format::general, 81,
1615         "1.0000000000000001319064632327801561377715586164000484896001890252212866570518528e+81"},
1616     {0x1.5159af8044462p+272, chars_format::general, 82,
1617         "9999999999999999634067965630886574211027143225273567793680363843427086501542887424"},
1618     {0x1.5159af8044463p+272, chars_format::general, 82,
1619         "1.0000000000000001319064632327801561377715586164000484896001890252212866570518528e+82"},
1620     {0x1.a5b01b605557ap+275, chars_format::general, 83,
1621         "99999999999999989600692989521205793443517660497828009527517532799127744739526311936"},
1622     {0x1.a5b01b605557bp+275, chars_format::general, 83,
1623         "1.0000000000000000308066632309652569077702520400764334634608974406941398529133143654e+83"},
1624     {0x1.078e111c3556cp+279, chars_format::general, 84,
1625         "999999999999999842087036560910778345101146430939018748000886482910132485188042620928"},
1626     {0x1.078e111c3556dp+279, chars_format::general, 84,
1627         "1.00000000000000005776660989811589670243726712709606413709804186323471233401692461466e+84"},
1628     {0x1.4971956342ac7p+282, chars_format::general, 85,
1629         "9999999999999998420870365609107783451011464309390187480008864829101324851880426209280"},
1630     {0x1.4971956342ac8p+282, chars_format::general, 85,
1631         "1.00000000000000001463069523067487303097004298786465505927861078716979636425114821591e+85"},
1632     {0x1.9bcdfabc13579p+285, chars_format::general, 86,
1633         "99999999999999987659576829486359728227492574232414601025643134376206526100066373992448"},
1634     {0x1.9bcdfabc1357ap+285, chars_format::general, 86,
1635         "1.0000000000000000146306952306748730309700429878646550592786107871697963642511482159104e+86"},
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1640     {0x1.41b8ebe2ef1c7p+292, chars_format::general, 88,
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1644     {0x1.922726dbaae39p+295, chars_format::general, 89,
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1656     {0x1.88ba3bf284e23p+305, chars_format::general, 92,
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1674     {0x1.df67562d8b363p+318, chars_format::general, 96,
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1678     {0x1.2ba095dc7701ep+322, chars_format::general, 97,
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1682     {0x1.7688bb5394c26p+325, chars_format::general, 98,
1683         "1.0000000000000001494613774502787916725490869505114529706436029406093759632791412756310166064437658e+98"},
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1690     {0x1.249ad2594c37dp+332, chars_format::general, 100,
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1694     {0x1.6dc186ef9f45dp+335, chars_format::general, 101,
1695         "1.000000000000000132463024643303662302003795265805662537522543098903155152325782690415604110898191401e+101"},
1696     {0x1.c931e8ab87173p+338, chars_format::general, 102,
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1699         "1.00000000000000010138032236769199716729240475662936003124403367406892281229678413459313554761485543014e+102"},
1700     {0x1.1dbf316b346e7p+342, chars_format::general, 103,
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1703         "1.000000000000000001915675085734668736215955127265192011152803514599379324203988755961236145108180323533e+"
1704         "103"},
1705     {0x1.652efdc6018a1p+345, chars_format::general, 104,
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1707     {0x1.652efdc6018a2p+345, chars_format::general, 104,
1708         "1.0000000000000000019156750857346687362159551272651920111528035145993793242039887559612361451081803235328e+"
1709         "104"},
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1714         "105"},
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1718         "1.000000000000000091035999050368435010460453995175486557154545737484090289535133415215418009754161219056435e+"
1719         "106"},
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1723         "1.0000000000000001317767185770581567358293677633630497781839136108028153022579424023030440050208953427243827e+"
1724         "107"},
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1727     {0x1.b403dcc834e12p+358, chars_format::general, 108,
1728         "1."
1729         "00000000000000003399899171300282459494397471971289804771343071483787527172320083329274161638073344592130867e+"
1730         "108"},
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1732         "999999999999999981850870718839980786471765096432817124795839836989907255438005329820580342439313767626335846"
1733         "4"},
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1735         "1."
1736         "000000000000000190443354695491356020360603589553140816466203348381779320578787343709225438204992480806227149e+"
1737         "109"},
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1740         "6"},
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1742         "1."
1743         "0000000000000000235693675141702558332495327950568818631299125392682816684661617325983093615924495102623141069e"
1744         "+110"},
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1747         "2"},
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1750         "00000000000000009031896238669869590809396111285538544446442886291368072931121197704267579223746669847987932365"
1751         "e+111"},
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1754         "48"},
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1756         "1."
1757         "00000000000000014371863828472144796796950376709418830953204192182999997798725217259816893675348044905393149706"
1758         "2e+112"},
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1761         "176"},
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1765         "78e+113"},
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1772         "784e+114"},
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1775         "24576"},
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1782         "353408"},
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1800         "1790131e+118"},
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1803         "536318464"},
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1806         "00000000000000012334713184677367065734511114927744231797396013484834264822673118714746919046029294413093564456"
1807         "39324467e+119"},
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1810         "1077037056"},
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1813         "00000000000000012334713184677367065734511114927744231797396013484834264822673118714746919046029294413093564456"
1814         "393244672e+120"},
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1817         "79348731904"},
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1819         "1."
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1821         "4219200922e+121"},
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1824         "290741100544"},
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1826         "1."
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1828         "29623353754e+122"},
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1831         "0951350501376"},
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1833         "1."
1834         "00000000000000012449388115476870641315052159692848578837224262943248321009552560684093062850453534816594492111"
1835         "899528999731e+123"},
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1837         "99999999999999994835318744673121432143947683772820873519605146130849290704870274192525374490890208838852004226"
1838         "13425626021888"},
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1842         "9777714198938e+124"},
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1845         "365553228283904"},
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1847         "1."
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1849         "51517748376371e+125"},
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1852         "3655532282839040"},
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1854         "1."
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1856         "88525263266775e+126"},
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1859         "86949310916067328"},
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1863         "8852526326677504e+127"},
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1866         "860037395056427008"},
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1870         "8852526326677504e+128"},
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1873         "6751665376232210432"},
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1875         "1."
1876         "00000000000000015213153026885117583895392925994540392652927486498559144857892575983196643605324751084675473411"
1877         "095338727712279757e+129"},
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1879         "99999999999999993665180888231886764680292871228501592999945072962767998323669620536317549817787697967498615270"
1880         "90709766158759755776"},
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1882         "1."
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1884         "4432354136588445286e+130"},
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1886         "99999999999999991202555500957231813912852864969525730182461368558677581576901282770959939099212034754106974340"
1887         "599870111173348163584"},
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1889         "1."
1890         "00000000000000010903558599154471420052372915041332632722331003791400915551047984893820824847817340461240101783"
1891         "05769051448734331699e+131"},
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3247     {0x1.ddd4baa009303p+999, chars_format::general, 301,
3248         "1."
3249         "00000000000000005250476025520442024870446858110815915491585411551180245798890819578637137508044786404370444383"
3250         "28838781769425232353604305756447921847867069828483872009265758037378302337947880900593689532349707999450811190"
3251         "3896764088007465274278014249457925878882005684283811566947219638686545940054016e+301"},
3252     {0x1.2aa4f4a405be1p+1003, chars_format::general, 302,
3253         "99999999999999988595886650569271721532146878831929642021471152965962304374245995240101777311515802698485322026"
3254         "33726121194854587337474489247312446837572677102753621174583777160450961036792822084784910517936242704782911914"
3255         "1560667380048679757245757262098417746977035154548906385860807815060374033329553408"},
3256     {0x1.2aa4f4a405be2p+1003, chars_format::general, 302,
3257         "1."
3258         "00000000000000007629703079084894925347346855150656811701601734206211380288125794484142188964691784076639747577"
3259         "13854876137221038784479993829181561135051983075016764985648898162653636809541460731423515105837345898689082515"
3260         "565906361771586320528262239050928418343985861710308373567384989920457049815751066e+302"},
3261     {0x1.754e31cd072d9p+1006, chars_format::general, 303,
3262         "99999999999999984789123364866147080769106883568184208085445036717912489191470035391293694980880606422854436916"
3263         "17700370206381297048073388330938623978076815908300992412370752960010425882243094355457189600356022066001677793"
3264         "87409881325152430676383842364162444596844704620380709158981993982315347403639619584"},
3265     {0x1.754e31cd072dap+1006, chars_format::general, 303,
3266         "1."
3267         "00000000000000000016176507678645643821266864623165943829549501710111749922573874786526024303421391525377977356"
3268         "81803374160274458205677791996433915416060260686111507461222849761772566500442005272768073270676904621126614275"
3269         "0019705122648989826067876339144937608854729232081412795748633065546891912226327757e+303"},
3270     {0x1.d2a1be4048f90p+1009, chars_format::general, 304,
3271         "99999999999999993925355250553646218600402872201173249531907715713232045630132339028433092574405077484368561180"
3272         "56162172578717193742636030530235798840866882774987301441682011041067710253162440905843719802548551599076639682"
3273         "550821832659549112269607949805346034918662572406407604380845959862074904348138143744"},
3274     {0x1.d2a1be4048f91p+1009, chars_format::general, 304,
3275         "1."
3276         "00000000000000006106997764803645069042130857045158638127191287706991454215015410544618956032437705566387393533"
3277         "07444575741831722668719553462632031991253638597235713480763688482477422747721569639692426738805257643176588867"
3278         "45311919187024885294396731802364148685228327400987495476888065324730347809712740762e+304"},
3279     {0x1.23a516e82d9bap+1013, chars_format::general, 305,
3280         "99999999999999993925355250553646218600402872201173249531907715713232045630132339028433092574405077484368561180"
3281         "56162172578717193742636030530235798840866882774987301441682011041067710253162440905843719802548551599076639682"
3282         "5508218326595491122696079498053460349186625724064076043808459598620749043481381437440"},
3283     {0x1.23a516e82d9bbp+1013, chars_format::general, 305,
3284         "1."
3285         "00000000000000013415983273353644379307167647951549871284361430903247099365945253454330474107257282415598692944"
3286         "58214017639700440024369667222069771881485692090584760704212694947323250244457046880001650900559281269636558378"
3287         "394497607396668697348582938954618758012455694971955365001701469278440622346520965939e+305"},
3288     {0x1.6c8e5ca239028p+1016, chars_format::general, 306,
3289         "99999999999999986129104041433646954317696961901022600830926229637226024135807173258074139961264195511876508474"
3290         "95341434554323895229942575853502209624619359048748317736669737478565494256644598516180547363344259730852672204"
3291         "21335152276470127823801795414563694568114532338018850013250375609552861714878501486592"},
3292     {0x1.6c8e5ca239029p+1016, chars_format::general, 306,
3293         "1."
3294         "00000000000000001721606459673645482883108782501323898232889201789238067124457504798792045187545959456860613886"
3295         "16982910603110492255329485206969388057114406501226285146694284603569926249680283295506892241752843467300607160"
3296         "8882921425543969463011979454650551241561798214326267086291881636286211915474912726221e+306"},
3297     {0x1.c7b1f3cac7433p+1019, chars_format::general, 307,
3298         "99999999999999998603105976025645777170026418381263638752496607358835658526727438490648464142289606667863792803"
3299         "92654615393353172850252103336275952370615397010730691664689375178569039851073146339641623266071126720011020169"
3300         "553304018596457812688561947201171488461172921822139066929851282122002676667750021070848"},
3301     {0x1.c7b1f3cac7434p+1019, chars_format::general, 307,
3302         "1."
3303         "00000000000000011077107910617644600022355874861504676674066985080445292917647703723222788323315017823851077132"
3304         "89967796232382450470561630819049695116611434972713065592709012878572585445501694163102699168797993709169368134"
3305         "89325651442821434713910594025670603124120052026408963372719880814847673618671502727578e+307"},
3306     {0x1.1ccf385ebc89fp+1023, chars_format::general, 308,
3307         "99999999999999981139503267596847425176765179308926185662298078548582170379439067165044410288854031049481594743"
3308         "36416162218712184181818764860392712526220943863955368165461882398564076018873179386796117002253512935189333018"
3309         "0773705244319986644578003569234231285691342840034082734135647456849389933411990123839488"},
3310     {0x1.1ccf385ebc8a0p+1023, chars_format::general, 308,
3311         "1."
3312         "00000000000000001097906362944045541740492309677311846336810682903157585404911491537163328978494688899061249669"
3313         "72117251561159028374314008832830700919814604603127166450293302718569748969958855904333838446616500117842689762"
3314         "621294517762809119578670745812278397017178441510529180289320787327297488571543022311834e+308"},
3315     {0x1.a36e2eb1c432cp-14, chars_format::general, 309,
3316         "9.99999999999999912396464463171241732197813689708709716796875e-05"},
3317     {0x1.a36e2eb1c432dp-14, chars_format::general, 309,
3318         "0.000100000000000000004792173602385929598312941379845142364501953125"},
3319     {0x1.0624dd2f1a9fbp-10, chars_format::general, 309,
3320         "0.00099999999999999980397624721462079833145253360271453857421875"},
3321     {0x1.0624dd2f1a9fcp-10, chars_format::general, 309,
3322         "0.001000000000000000020816681711721685132943093776702880859375"},
3323     {0x1.47ae147ae147ap-7, chars_format::general, 309, "0.0099999999999999984734433411404097569175064563751220703125"},
3324     {0x1.47ae147ae147bp-7, chars_format::general, 309, "0.01000000000000000020816681711721685132943093776702880859375"},
3325     {0x1.9999999999999p-4, chars_format::general, 309, "0.09999999999999999167332731531132594682276248931884765625"},
3326     {0x1.999999999999ap-4, chars_format::general, 309, "0.1000000000000000055511151231257827021181583404541015625"},
3327     {0x1.fffffffffffffp-1, chars_format::general, 309, "0.99999999999999988897769753748434595763683319091796875"},
3328     {0x1.0000000000000p+0, chars_format::general, 309, "1"},
3329     {0x1.3ffffffffffffp+3, chars_format::general, 309, "9.9999999999999982236431605997495353221893310546875"},
3330     {0x1.4000000000000p+3, chars_format::general, 309, "10"},
3331     {0x1.8ffffffffffffp+6, chars_format::general, 309, "99.9999999999999857891452847979962825775146484375"},
3332     {0x1.9000000000000p+6, chars_format::general, 309, "100"},
3333     {0x1.f3fffffffffffp+9, chars_format::general, 309, "999.9999999999998863131622783839702606201171875"},
3334     {0x1.f400000000000p+9, chars_format::general, 309, "1000"},
3335     {0x1.387ffffffffffp+13, chars_format::general, 309, "9999.999999999998181010596454143524169921875"},
3336     {0x1.3880000000000p+13, chars_format::general, 309, "10000"},
3337     {0x1.869ffffffffffp+16, chars_format::general, 309, "99999.999999999985448084771633148193359375"},
3338     {0x1.86a0000000000p+16, chars_format::general, 309, "100000"},
3339     {0x1.e847fffffffffp+19, chars_format::general, 309, "999999.999999999883584678173065185546875"},
3340     {0x1.e848000000000p+19, chars_format::general, 309, "1000000"},
3341     {0x1.312cfffffffffp+23, chars_format::general, 309, "9999999.99999999813735485076904296875"},
3342     {0x1.312d000000000p+23, chars_format::general, 309, "10000000"},
3343     {0x1.7d783ffffffffp+26, chars_format::general, 309, "99999999.99999998509883880615234375"},
3344     {0x1.7d78400000000p+26, chars_format::general, 309, "100000000"},
3345     {0x1.dcd64ffffffffp+29, chars_format::general, 309, "999999999.99999988079071044921875"},
3346     {0x1.dcd6500000000p+29, chars_format::general, 309, "1000000000"},
3347     {0x1.2a05f1fffffffp+33, chars_format::general, 309, "9999999999.9999980926513671875"},
3348     {0x1.2a05f20000000p+33, chars_format::general, 309, "10000000000"},
3349     {0x1.74876e7ffffffp+36, chars_format::general, 309, "99999999999.9999847412109375"},
3350     {0x1.74876e8000000p+36, chars_format::general, 309, "100000000000"},
3351     {0x1.d1a94a1ffffffp+39, chars_format::general, 309, "999999999999.9998779296875"},
3352     {0x1.d1a94a2000000p+39, chars_format::general, 309, "1000000000000"},
3353     {0x1.2309ce53fffffp+43, chars_format::general, 309, "9999999999999.998046875"},
3354     {0x1.2309ce5400000p+43, chars_format::general, 309, "10000000000000"},
3355     {0x1.6bcc41e8fffffp+46, chars_format::general, 309, "99999999999999.984375"},
3356     {0x1.6bcc41e900000p+46, chars_format::general, 309, "100000000000000"},
3357     {0x1.c6bf52633ffffp+49, chars_format::general, 309, "999999999999999.875"},
3358     {0x1.c6bf526340000p+49, chars_format::general, 309, "1000000000000000"},
3359     {0x1.1c37937e07fffp+53, chars_format::general, 309, "9999999999999998"},
3360     {0x1.1c37937e08000p+53, chars_format::general, 309, "10000000000000000"},
3361     {0x1.6345785d89fffp+56, chars_format::general, 309, "99999999999999984"},
3362     {0x1.6345785d8a000p+56, chars_format::general, 309, "100000000000000000"},
3363     {0x1.bc16d674ec7ffp+59, chars_format::general, 309, "999999999999999872"},
3364     {0x1.bc16d674ec800p+59, chars_format::general, 309, "1000000000000000000"},
3365     {0x1.158e460913cffp+63, chars_format::general, 309, "9999999999999997952"},
3366     {0x1.158e460913d00p+63, chars_format::general, 309, "10000000000000000000"},
3367     {0x1.5af1d78b58c3fp+66, chars_format::general, 309, "99999999999999983616"},
3368     {0x1.5af1d78b58c40p+66, chars_format::general, 309, "100000000000000000000"},
3369     {0x1.b1ae4d6e2ef4fp+69, chars_format::general, 309, "999999999999999868928"},
3370     {0x1.b1ae4d6e2ef50p+69, chars_format::general, 309, "1000000000000000000000"},
3371     {0x1.0f0cf064dd591p+73, chars_format::general, 309, "9999999999999997902848"},
3372     {0x1.0f0cf064dd592p+73, chars_format::general, 309, "10000000000000000000000"},
3373     {0x1.52d02c7e14af6p+76, chars_format::general, 309, "99999999999999991611392"},
3374     {0x1.52d02c7e14af7p+76, chars_format::general, 309, "100000000000000008388608"},
3375     {0x1.a784379d99db4p+79, chars_format::general, 309, "999999999999999983222784"},
3376     {0x1.a784379d99db5p+79, chars_format::general, 309, "1000000000000000117440512"},
3377     {0x1.08b2a2c280290p+83, chars_format::general, 309, "9999999999999998758486016"},
3378     {0x1.08b2a2c280291p+83, chars_format::general, 309, "10000000000000000905969664"},
3379     {0x1.4adf4b7320334p+86, chars_format::general, 309, "99999999999999987584860160"},
3380     {0x1.4adf4b7320335p+86, chars_format::general, 309, "100000000000000004764729344"},
3381     {0x1.9d971e4fe8401p+89, chars_format::general, 309, "999999999999999875848601600"},
3382     {0x1.9d971e4fe8402p+89, chars_format::general, 309, "1000000000000000013287555072"},
3383     {0x1.027e72f1f1281p+93, chars_format::general, 309, "9999999999999999583119736832"},
3384     {0x1.027e72f1f1282p+93, chars_format::general, 309, "10000000000000001782142992384"},
3385     {0x1.431e0fae6d721p+96, chars_format::general, 309, "99999999999999991433150857216"},
3386     {0x1.431e0fae6d722p+96, chars_format::general, 309, "100000000000000009025336901632"},
3387     {0x1.93e5939a08ce9p+99, chars_format::general, 309, "999999999999999879147136483328"},
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3389     {0x1.f8def8808b024p+102, chars_format::general, 309, "9999999999999999635896294965248"},
3390     {0x1.f8def8808b025p+102, chars_format::general, 309, "10000000000000000761796201807872"},
3391     {0x1.3b8b5b5056e16p+106, chars_format::general, 309, "99999999999999987351763694911488"},
3392     {0x1.3b8b5b5056e17p+106, chars_format::general, 309, "100000000000000005366162204393472"},
3393     {0x1.8a6e32246c99cp+109, chars_format::general, 309, "999999999999999945575230987042816"},
3394     {0x1.8a6e32246c99dp+109, chars_format::general, 309, "1000000000000000089690419062898688"},
3395     {0x1.ed09bead87c03p+112, chars_format::general, 309, "9999999999999999455752309870428160"},
3396     {0x1.ed09bead87c04p+112, chars_format::general, 309, "10000000000000000608673814477275136"},
3397     {0x1.3426172c74d82p+116, chars_format::general, 309, "99999999999999996863366107917975552"},
3398     {0x1.3426172c74d83p+116, chars_format::general, 309, "100000000000000015310110181627527168"},
3399     {0x1.812f9cf7920e2p+119, chars_format::general, 309, "999999999999999894846684784341549056"},
3400     {0x1.812f9cf7920e3p+119, chars_format::general, 309, "1000000000000000042420637374017961984"},
3401     {0x1.e17b84357691bp+122, chars_format::general, 309, "9999999999999999538762658202121142272"},
3402     {0x1.e17b84357691cp+122, chars_format::general, 309, "10000000000000000719354278919532445696"},
3403     {0x1.2ced32a16a1b1p+126, chars_format::general, 309, "99999999999999997748809823456034029568"},
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3405     {0x1.78287f49c4a1dp+129, chars_format::general, 309, "999999999999999939709166371603178586112"},
3406     {0x1.78287f49c4a1ep+129, chars_format::general, 309, "1000000000000000090824893823431825424384"},
3407     {0x1.d6329f1c35ca4p+132, chars_format::general, 309, "9999999999999999094860208812374492184576"},
3408     {0x1.d6329f1c35ca5p+132, chars_format::general, 309, "10000000000000000303786028427003666890752"},
3409     {0x1.25dfa371a19e6p+136, chars_format::general, 309, "99999999999999981277195531206711524196352"},
3410     {0x1.25dfa371a19e7p+136, chars_format::general, 309, "100000000000000000620008645040778319495168"},
3411     {0x1.6f578c4e0a060p+139, chars_format::general, 309, "999999999999999890143207767403382423158784"},
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3414     {0x1.cb2d6f618c879p+142, chars_format::general, 309, "10000000000000000139372116959414099130712064"},
3415     {0x1.1efc659cf7d4bp+146, chars_format::general, 309, "99999999999999989014320776740338242315878400"},
3416     {0x1.1efc659cf7d4cp+146, chars_format::general, 309, "100000000000000008821361405306422640701865984"},
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3418     {0x1.66bb7f0435c9fp+149, chars_format::general, 309, "1000000000000000088213614053064226407018659840"},
3419     {0x1.c06a5ec5433c6p+152, chars_format::general, 309, "9999999999999999931398190359470212947659194368"},
3420     {0x1.c06a5ec5433c7p+152, chars_format::general, 309, "10000000000000001199048790587699614444362399744"},
3421     {0x1.18427b3b4a05bp+156, chars_format::general, 309, "99999999999999984102174700855949311516153479168"},
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3424     {0x1.5e531a0a1c873p+159, chars_format::general, 309, "1000000000000000043845843045076197354634047651840"},
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3426     {0x1.b5e7e08ca3a90p+162, chars_format::general, 309, "10000000000000000762976984109188700329496497094656"},
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3428     {0x1.11b0ec57e649ap+166, chars_format::general, 309, "100000000000000007629769841091887003294964970946560"},
3429     {0x1.561d276ddfdc0p+169, chars_format::general, 309, "999999999999999993220948674361627976461708441944064"},
3430     {0x1.561d276ddfdc1p+169, chars_format::general, 309, "1000000000000000159374448147476112089437590976987136"},
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3433     {0x1.0b46c6cdd6e3ep+176, chars_format::general, 309, "99999999999999999322094867436162797646170844194406400"},
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3439     {0x1.05031e2503da8p+186, chars_format::general, 309, "99999999999999987412212025203316576428059584082518999040"},
3440     {0x1.05031e2503da9p+186, chars_format::general, 309, "100000000000000009190283508143378238084034459715684532224"},
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3555         "100000000000000001463069523067487303097004298786465505927861078716979636425114821591040"},
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3560     {0x1.41b8ebe2ef1c7p+292, chars_format::general, 309,
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3564     {0x1.922726dbaae39p+295, chars_format::general, 309,
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3600     {0x1.7688bb5394c25p+325, chars_format::general, 309,
3601         "99999999999999999769037024514370800696612547992403838920556863966097586548129676477911932478685184"},
3602     {0x1.7688bb5394c26p+325, chars_format::general, 309,
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3606     {0x1.d42aea2879f2fp+328, chars_format::general, 309,
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3610     {0x1.249ad2594c37dp+332, chars_format::general, 309,
3611         "10000000000000000159028911097599180468360808563945281389781327557747838772170381060813469985856815104"},
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3613         "99999999999999997704951326524533662844684271992415000612999597473199345218078991130326129448151154688"},
3614     {0x1.6dc186ef9f45dp+335, chars_format::general, 309,
3615         "100000000000000013246302464330366230200379526580566253752254309890315515232578269041560411089819140096"},
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3617         "999999999999999977049513265245336628446842719924150006129995974731993452180789911303261294481511546880"},
3618     {0x1.c931e8ab87174p+338, chars_format::general, 309,
3619         "1000000000000000101380322367691997167292404756629360031244033674068922812296784134593135547614855430144"},
3620     {0x1.1dbf316b346e7p+342, chars_format::general, 309,
3621         "9999999999999998029863805218200118740630558685368559709703431956602923480183979986974373400948301103104"},
3622     {0x1.1dbf316b346e8p+342, chars_format::general, 309,
3623         "10000000000000000019156750857346687362159551272651920111528035145993793242039887559612361451081803235328"},
3624     {0x1.652efdc6018a1p+345, chars_format::general, 309,
3625         "99999999999999984277223943460294324649363572028252317900683525944810974325551615015019710109750015295488"},
3626     {0x1.652efdc6018a2p+345, chars_format::general, 309,
3627         "100000000000000000191567508573466873621595512726519201115280351459937932420398875596123614510818032353280"},
3628     {0x1.be7abd3781ecap+348, chars_format::general, 309,
3629         "999999999999999938258300825281978540327027364472124478294416212538871491824599713636820527503908255301632"},
3630     {0x1.be7abd3781ecbp+348, chars_format::general, 309,
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3632     {0x1.170cb642b133ep+352, chars_format::general, 309,
3633         "9999999999999998873324014169198263836158851542376704520077063708904652259210884797772880334204906007166976"},
3634     {0x1.170cb642b133fp+352, chars_format::general, 309,
3635         "10000000000000000910359990503684350104604539951754865571545457374840902895351334152154180097541612190564352"},
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3637         "99999999999999996881384047029926983435371269061279689406644211752791525136670645395254002395395884805259264"},
3638     {0x1.5ccfe3d35d80fp+355, chars_format::general, 309,
3639         "100000000000000013177671857705815673582936776336304977818391361080281530225794240230304400502089534272438272"},
3640     {0x1.b403dcc834e11p+358, chars_format::general, 309,
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3642     {0x1.b403dcc834e12p+358, chars_format::general, 309,
3643         "100000000000000003399899171300282459494397471971289804771343071483787527172320083329274161638073344592130867"
3644         "2"},
3645     {0x1.108269fd210cbp+362, chars_format::general, 309,
3646         "999999999999999981850870718839980786471765096432817124795839836989907255438005329820580342439313767626335846"
3647         "4"},
3648     {0x1.108269fd210ccp+362, chars_format::general, 309,
3649         "1000000000000000190443354695491356020360603589553140816466203348381779320578787343709225438204992480806227148"
3650         "8"},
3651     {0x1.54a3047c694fdp+365, chars_format::general, 309,
3652         "9999999999999998566953803328491556461384620005606229097936217301547840163535361214873932849799065397184010649"
3653         "6"},
3654     {0x1.54a3047c694fep+365, chars_format::general, 309,
3655         "10000000000000000235693675141702558332495327950568818631299125392682816684661617325983093615924495102623141068"
3656         "8"},
3657     {0x1.a9cbc59b83a3dp+368, chars_format::general, 309,
3658         "99999999999999995681977264164181575840510447725837828179539621562288260762111148815394293094743232204474889011"
3659         "2"},
3660     {0x1.a9cbc59b83a3ep+368, chars_format::general, 309,
3661         "10000000000000000903189623866986959080939611128553854444644288629136807293112119770426757922374666984798793236"
3662         "48"},
3663     {0x1.0a1f5b8132466p+372, chars_format::general, 309,
3664         "99999999999999993011993469263043972846733315013897684926158968616472298328309139037619635868942544675772280340"
3665         "48"},
3666     {0x1.0a1f5b8132467p+372, chars_format::general, 309,
3667         "10000000000000001437186382847214479679695037670941883095320419218299999779872521725981689367534804490539314970"
3668         "624"},
3669     {0x1.4ca732617ed7fp+375, chars_format::general, 309,
3670         "99999999999999984468045325579403643266646490335689226515340879189861218540142707748740732746380344583923932594"
3671         "176"},
3672     {0x1.4ca732617ed80p+375, chars_format::general, 309,
3673         "10000000000000000155594161294668430242682013969210614333697705804308337811647557032649853899150474476762062808"
3674         "6784"},
3675     {0x1.9fd0fef9de8dfp+378, chars_format::general, 309,
3676         "99999999999999987885624583052859775098681220206972609879668114960505650455409280264292293995405224620663271692"
3677         "6976"},
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4317         "6"},
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4320         "00416230607757039843910326832140006474740509066843630497944377635977584613166124739130365574036827385146376192"
4321         "0"},
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4325         "2"},
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4329         "36"},
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4333         "28"},
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4337         "360"},
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4369         "6940160"},
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4926     {0x1.3926bc01a973cp+983, chars_format::general, 309,
4927         "10000000000000001628692964312898819407481696156710913521578222074199849660344758793913420237042099630991652853"
4928         "44488023513566554538745149164071040877572677482949094392119926936067697298254700609243125933124255958283146431"
4929         "01036337101791537708137280528748894576782202394138833833989693991675429388288"},
4930     {0x1.87706b0213d09p+986, chars_format::general, 309,
4931         "99999999999999987243630649422287748800158794576863820152106407081950468170403460674668242206273075505847886031"
4932         "39507989435033142666801002471598601070832814300524965205584765878312050233601939798121865123629792258145535047"
4933         "69848291707808207769286850569305558980974742103098278680884456943362624192512"},
4934     {0x1.87706b0213d0ap+986, chars_format::general, 309,
4935         "10000000000000000176528014627563797143748787807198647768394431391197448238692552430690122228834703590788220728"
4936         "29219411228534934402712624705615450492327979456500795456339201761949451160807447294527656222743617592048849967"
4937         "890105831362861792425329827928397252374398383022243308510390698430058459037696"},
4938     {0x1.e94c85c298c4cp+989, chars_format::general, 309,
4939         "99999999999999995956620347534297882382556244673937414671209151179964876700316698854008030255517451747068478782"
4940         "31119663145222863482996149222332143382301002459214758820269116923021527058285459686414683385913622455551313826"
4941         "420028155008403585629126369847605750170289266545852965785882018353801250996224"},
4942     {0x1.e94c85c298c4dp+989, chars_format::general, 309,
4943         "10000000000000000757393994501697806049241951147003554069667947664398408807353434975979441432117662006869593578"
4944         "35326856142547582457125634488997686646425858667080115030651491831596749615786348620413844106895872938542568553"
4945         "1382088472248832262877470188720339297317678393899013204421931950247367929757696"},
4946     {0x1.31cfd3999f7afp+993, chars_format::general, 309,
4947         "99999999999999986662764669548153739894665631237058913850832890808749507601742578129378923002990117089766513181"
4948         "33400544521020494612387992688216364916734935089945645631272475808664751778623038472235677239477536911651816462"
4949         "4503799012160606438304513147494189124523779646633247748770420728389479079870464"},
4950     {0x1.31cfd3999f7b0p+993, chars_format::general, 309,
4951         "10000000000000000525047602552044202487044685811081591549158541155118024579889081957863713750804478640437044438"
4952         "32883878176942523235360430575644792184786706982848387200926575803737830233794788090059368953234970799945081119"
4953         "03896764088007465274278014249457925878882005684283811566947219638686545940054016"},
4954     {0x1.7e43c8800759bp+996, chars_format::general, 309,
4955         "99999999999999990380306940742611396889821876611810314178983394957235655241172226419230565904001050952687299421"
4956         "72488191970701442160631255301862676302961362037653290906871132254407461890488006957907279698051971129211615408"
4957         "03823920273299782054992133678869364753954248541633605124057805104488924519071744"},
4958     {0x1.7e43c8800759cp+996, chars_format::general, 309,
4959         "10000000000000000525047602552044202487044685811081591549158541155118024579889081957863713750804478640437044438"
4960         "32883878176942523235360430575644792184786706982848387200926575803737830233794788090059368953234970799945081119"
4961         "038967640880074652742780142494579258788820056842838115669472196386865459400540160"},
4962     {0x1.ddd4baa009302p+999, chars_format::general, 309,
4963         "99999999999999993354340757698177522485946872911611434441503798276024573352715945051111880224809798043023928414"
4964         "03758309930446200199225865392779725411942503595819407127350057411001629979979981746444561664911518503259454564"
4965         "508526643946547561925497354420113435609274102018745072331406833609642314953654272"},
4966     {0x1.ddd4baa009303p+999, chars_format::general, 309,
4967         "10000000000000000525047602552044202487044685811081591549158541155118024579889081957863713750804478640437044438"
4968         "32883878176942523235360430575644792184786706982848387200926575803737830233794788090059368953234970799945081119"
4969         "0389676408800746527427801424945792587888200568428381156694721963868654594005401600"},
4970     {0x1.2aa4f4a405be1p+1003, chars_format::general, 309,
4971         "99999999999999988595886650569271721532146878831929642021471152965962304374245995240101777311515802698485322026"
4972         "33726121194854587337474489247312446837572677102753621174583777160450961036792822084784910517936242704782911914"
4973         "1560667380048679757245757262098417746977035154548906385860807815060374033329553408"},
4974     {0x1.2aa4f4a405be2p+1003, chars_format::general, 309,
4975         "10000000000000000762970307908489492534734685515065681170160173420621138028812579448414218896469178407663974757"
4976         "71385487613722103878447999382918156113505198307501676498564889816265363680954146073142351510583734589868908251"
4977         "55659063617715863205282622390509284183439858617103083735673849899204570498157510656"},
4978     {0x1.754e31cd072d9p+1006, chars_format::general, 309,
4979         "99999999999999984789123364866147080769106883568184208085445036717912489191470035391293694980880606422854436916"
4980         "17700370206381297048073388330938623978076815908300992412370752960010425882243094355457189600356022066001677793"
4981         "87409881325152430676383842364162444596844704620380709158981993982315347403639619584"},
4982     {0x1.754e31cd072dap+1006, chars_format::general, 309,
4983         "10000000000000000001617650767864564382126686462316594382954950171011174992257387478652602430342139152537797735"
4984         "68180337416027445820567779199643391541606026068611150746122284976177256650044200527276807327067690462112661427"
4985         "500197051226489898260678763391449376088547292320814127957486330655468919122263277568"},
4986     {0x1.d2a1be4048f90p+1009, chars_format::general, 309,
4987         "99999999999999993925355250553646218600402872201173249531907715713232045630132339028433092574405077484368561180"
4988         "56162172578717193742636030530235798840866882774987301441682011041067710253162440905843719802548551599076639682"
4989         "550821832659549112269607949805346034918662572406407604380845959862074904348138143744"},
4990     {0x1.d2a1be4048f91p+1009, chars_format::general, 309,
4991         "10000000000000000610699776480364506904213085704515863812719128770699145421501541054461895603243770556638739353"
4992         "30744457574183172266871955346263203199125363859723571348076368848247742274772156963969242673880525764317658886"
4993         "7453119191870248852943967318023641486852283274009874954768880653247303478097127407616"},
4994     {0x1.23a516e82d9bap+1013, chars_format::general, 309,
4995         "99999999999999993925355250553646218600402872201173249531907715713232045630132339028433092574405077484368561180"
4996         "56162172578717193742636030530235798840866882774987301441682011041067710253162440905843719802548551599076639682"
4997         "5508218326595491122696079498053460349186625724064076043808459598620749043481381437440"},
4998     {0x1.23a516e82d9bbp+1013, chars_format::general, 309,
4999         "10000000000000001341598327335364437930716764795154987128436143090324709936594525345433047410725728241559869294"
5000         "45821401763970044002436966722206977188148569209058476070421269494732325024445704688000165090055928126963655837"
5001         "83944976073966686973485829389546187580124556949719553650017014692784406223465209659392"},
5002     {0x1.6c8e5ca239028p+1016, chars_format::general, 309,
5003         "99999999999999986129104041433646954317696961901022600830926229637226024135807173258074139961264195511876508474"
5004         "95341434554323895229942575853502209624619359048748317736669737478565494256644598516180547363344259730852672204"
5005         "21335152276470127823801795414563694568114532338018850013250375609552861714878501486592"},
5006     {0x1.6c8e5ca239029p+1016, chars_format::general, 309,
5007         "10000000000000000172160645967364548288310878250132389823288920178923806712445750479879204518754595945686061388"
5008         "61698291060311049225532948520696938805711440650122628514669428460356992624968028329550689224175284346730060716"
5009         "088829214255439694630119794546505512415617982143262670862918816362862119154749127262208"},
5010     {0x1.c7b1f3cac7433p+1019, chars_format::general, 309,
5011         "99999999999999998603105976025645777170026418381263638752496607358835658526727438490648464142289606667863792803"
5012         "92654615393353172850252103336275952370615397010730691664689375178569039851073146339641623266071126720011020169"
5013         "553304018596457812688561947201171488461172921822139066929851282122002676667750021070848"},
5014     {0x1.c7b1f3cac7434p+1019, chars_format::general, 309,
5015         "10000000000000001107710791061764460002235587486150467667406698508044529291764770372322278832331501782385107713"
5016         "28996779623238245047056163081904969511661143497271306559270901287857258544550169416310269916879799370916936813"
5017         "4893256514428214347139105940256706031241200520264089633727198808148476736186715027275776"},
5018     {0x1.1ccf385ebc89fp+1023, chars_format::general, 309,
5019         "99999999999999981139503267596847425176765179308926185662298078548582170379439067165044410288854031049481594743"
5020         "36416162218712184181818764860392712526220943863955368165461882398564076018873179386796117002253512935189333018"
5021         "0773705244319986644578003569234231285691342840034082734135647456849389933411990123839488"},
5022     {0x1.1ccf385ebc8a0p+1023, chars_format::general, 309,
5023         "10000000000000000109790636294404554174049230967731184633681068290315758540491149153716332897849468889906124966"
5024         "97211725156115902837431400883283070091981460460312716645029330271856974896995885590433383844661650011784268976"
5025         "26212945177628091195786707458122783970171784415105291802893207873272974885715430223118336"},
5026     {0x1.fffffffffffffp+1023, chars_format::general, 309,
5027         "17976931348623157081452742373170435679807056752584499659891747680315726078002853876058955863276687817154045895"
5028         "35143824642343213268894641827684675467035375169860499105765512820762454900903893289440758685084551339423045832"
5029         "36903222948165808559332123348274797826204144723168738177180919299881250404026184124858368"},
5030 
5031     // The UCRT had trouble with rounding this value. charconv was never affected, but let's test it anyways.
5032     {0x1.88e2d605edc3dp+345, chars_format::general, 105,
5033         "109995565999999994887854821710219658911365648587951921896774663603198787416706536331386569598149846892544"},
5034     {0x1.88e2d605edc3dp+345, chars_format::general, 19, "1.099955659999999949e+104"},
5035     {0x1.88e2d605edc3dp+345, chars_format::general, 18, "1.09995565999999995e+104"},
5036     {0x1.88e2d605edc3dp+345, chars_format::general, 17, "1.0999556599999999e+104"},
5037     {0x1.88e2d605edc3dp+345, chars_format::general, 16, "1.09995566e+104"},
5038     {0x1.88e2d605edc3dp+345, chars_format::general, 15, "1.09995566e+104"},
5039     {0x1.88e2d605edc3dp+345, chars_format::general, 14, "1.09995566e+104"},
5040     {0x1.88e2d605edc3dp+345, chars_format::general, 13, "1.09995566e+104"},
5041     {0x1.88e2d605edc3dp+345, chars_format::general, 12, "1.09995566e+104"},
5042     {0x1.88e2d605edc3dp+345, chars_format::general, 11, "1.09995566e+104"},
5043     {0x1.88e2d605edc3dp+345, chars_format::general, 10, "1.09995566e+104"},
5044     {0x1.88e2d605edc3dp+345, chars_format::general, 9, "1.09995566e+104"},
5045     {0x1.88e2d605edc3dp+345, chars_format::general, 8, "1.0999557e+104"},
5046     {0x1.88e2d605edc3dp+345, chars_format::general, 7, "1.099956e+104"},
5047     {0x1.88e2d605edc3dp+345, chars_format::general, 6, "1.09996e+104"},
5048     {0x1.88e2d605edc3dp+345, chars_format::general, 5, "1.1e+104"},
5049     {0x1.88e2d605edc3dp+345, chars_format::general, 4, "1.1e+104"},
5050     {0x1.88e2d605edc3dp+345, chars_format::general, 3, "1.1e+104"},
5051     {0x1.88e2d605edc3dp+345, chars_format::general, 2, "1.1e+104"},
5052     {0x1.88e2d605edc3dp+345, chars_format::general, 1, "1e+104"},
5053 
5054     // More cases that the UCRT had trouble with (e.g. DevCom-1093399).
5055     {0x1.8p+62, chars_format::general, 17, "6.9175290276410819e+18"},
5056     {0x1.0a2742p+17, chars_format::general, 6, "136271"},
5057     {0x1.f8b0f962cdffbp+205, chars_format::general, 14, "1.0137595739223e+62"},
5058     {0x1.f8b0f962cdffbp+205, chars_format::general, 17, "1.0137595739222531e+62"},
5059     {0x1.f8b0f962cdffbp+205, chars_format::general, 51, "1.01375957392225305727423222620636224221808910954041e+62"},
5060     {0x1.f8b0f962cdffbp+205, chars_format::general, 55, "1.013759573922253057274232226206362242218089109540405973e+62"},
5061 };
5062 
5063 #endif // DOUBLE_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
5064