1*84e872a0SLloyd Pique /*
2*84e872a0SLloyd Pique * Copyright © 2012 Intel Corporation
3*84e872a0SLloyd Pique *
4*84e872a0SLloyd Pique * Permission is hereby granted, free of charge, to any person obtaining
5*84e872a0SLloyd Pique * a copy of this software and associated documentation files (the
6*84e872a0SLloyd Pique * "Software"), to deal in the Software without restriction, including
7*84e872a0SLloyd Pique * without limitation the rights to use, copy, modify, merge, publish,
8*84e872a0SLloyd Pique * distribute, sublicense, and/or sell copies of the Software, and to
9*84e872a0SLloyd Pique * permit persons to whom the Software is furnished to do so, subject to
10*84e872a0SLloyd Pique * the following conditions:
11*84e872a0SLloyd Pique *
12*84e872a0SLloyd Pique * The above copyright notice and this permission notice (including the
13*84e872a0SLloyd Pique * next paragraph) shall be included in all copies or substantial
14*84e872a0SLloyd Pique * portions of the Software.
15*84e872a0SLloyd Pique *
16*84e872a0SLloyd Pique * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17*84e872a0SLloyd Pique * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18*84e872a0SLloyd Pique * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19*84e872a0SLloyd Pique * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
20*84e872a0SLloyd Pique * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
21*84e872a0SLloyd Pique * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22*84e872a0SLloyd Pique * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23*84e872a0SLloyd Pique * SOFTWARE.
24*84e872a0SLloyd Pique */
25*84e872a0SLloyd Pique
26*84e872a0SLloyd Pique #define _GNU_SOURCE
27*84e872a0SLloyd Pique #include <stdlib.h>
28*84e872a0SLloyd Pique #include <stdio.h>
29*84e872a0SLloyd Pique #include <assert.h>
30*84e872a0SLloyd Pique #include "wayland-private.h"
31*84e872a0SLloyd Pique #include "test-runner.h"
32*84e872a0SLloyd Pique
TEST(fixed_double_conversions)33*84e872a0SLloyd Pique TEST(fixed_double_conversions)
34*84e872a0SLloyd Pique {
35*84e872a0SLloyd Pique wl_fixed_t f;
36*84e872a0SLloyd Pique double d;
37*84e872a0SLloyd Pique
38*84e872a0SLloyd Pique d = 62.125;
39*84e872a0SLloyd Pique f = wl_fixed_from_double(d);
40*84e872a0SLloyd Pique fprintf(stderr, "double %lf to fixed %x\n", d, f);
41*84e872a0SLloyd Pique assert(f == 0x3e20);
42*84e872a0SLloyd Pique
43*84e872a0SLloyd Pique d = -1200.625;
44*84e872a0SLloyd Pique f = wl_fixed_from_double(d);
45*84e872a0SLloyd Pique fprintf(stderr, "double %lf to fixed %x\n", d, f);
46*84e872a0SLloyd Pique assert(f == -0x4b0a0);
47*84e872a0SLloyd Pique
48*84e872a0SLloyd Pique f = random();
49*84e872a0SLloyd Pique d = wl_fixed_to_double(f);
50*84e872a0SLloyd Pique fprintf(stderr, "fixed %x to double %lf\n", f, d);
51*84e872a0SLloyd Pique assert(d == f / 256.0);
52*84e872a0SLloyd Pique
53*84e872a0SLloyd Pique f = 0x012030;
54*84e872a0SLloyd Pique d = wl_fixed_to_double(f);
55*84e872a0SLloyd Pique fprintf(stderr, "fixed %x to double %lf\n", f, d);
56*84e872a0SLloyd Pique assert(d == 288.1875);
57*84e872a0SLloyd Pique
58*84e872a0SLloyd Pique f = 0x70000000;
59*84e872a0SLloyd Pique d = wl_fixed_to_double(f);
60*84e872a0SLloyd Pique fprintf(stderr, "fixed %x to double %lf\n", f, d);
61*84e872a0SLloyd Pique assert(d == f / 256);
62*84e872a0SLloyd Pique
63*84e872a0SLloyd Pique f = -0x012030;
64*84e872a0SLloyd Pique d = wl_fixed_to_double(f);
65*84e872a0SLloyd Pique fprintf(stderr, "fixed %x to double %lf\n", f, d);
66*84e872a0SLloyd Pique assert(d == -288.1875);
67*84e872a0SLloyd Pique
68*84e872a0SLloyd Pique f = 0x80000000;
69*84e872a0SLloyd Pique d = wl_fixed_to_double(f);
70*84e872a0SLloyd Pique fprintf(stderr, "fixed %x to double %lf\n", f, d);
71*84e872a0SLloyd Pique assert(d == f / 256);
72*84e872a0SLloyd Pique }
73*84e872a0SLloyd Pique
TEST(fixed_int_conversions)74*84e872a0SLloyd Pique TEST(fixed_int_conversions)
75*84e872a0SLloyd Pique {
76*84e872a0SLloyd Pique wl_fixed_t f;
77*84e872a0SLloyd Pique int i;
78*84e872a0SLloyd Pique
79*84e872a0SLloyd Pique i = 62;
80*84e872a0SLloyd Pique f = wl_fixed_from_int(i);
81*84e872a0SLloyd Pique assert(f == 62 * 256);
82*84e872a0SLloyd Pique
83*84e872a0SLloyd Pique i = -2080;
84*84e872a0SLloyd Pique f = wl_fixed_from_int(i);
85*84e872a0SLloyd Pique assert(f == -2080 * 256);
86*84e872a0SLloyd Pique
87*84e872a0SLloyd Pique f = 0x277013;
88*84e872a0SLloyd Pique i = wl_fixed_to_int(f);
89*84e872a0SLloyd Pique assert(i == 0x2770);
90*84e872a0SLloyd Pique
91*84e872a0SLloyd Pique f = -0x5044;
92*84e872a0SLloyd Pique i = wl_fixed_to_int(f);
93*84e872a0SLloyd Pique assert(i == -0x50);
94*84e872a0SLloyd Pique }
95