1 //===-- Unittests for exp10m1f --------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "src/errno/libc_errno.h"
10 #include "src/math/exp10m1f.h"
11 #include "test/UnitTest/FPMatcher.h"
12 #include "test/UnitTest/Test.h"
13
14 using LlvmLibcExp10m1fTest = LIBC_NAMESPACE::testing::FPTest<float>;
15
TEST_F(LlvmLibcExp10m1fTest,SpecialNumbers)16 TEST_F(LlvmLibcExp10m1fTest, SpecialNumbers) {
17 LIBC_NAMESPACE::libc_errno = 0;
18
19 EXPECT_EQ(FPBits(aNaN).uintval(),
20 FPBits(LIBC_NAMESPACE::exp10m1f(aNaN)).uintval());
21 EXPECT_EQ(FPBits(neg_aNaN).uintval(),
22 FPBits(LIBC_NAMESPACE::exp10m1f(neg_aNaN)).uintval());
23 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::exp10m1f(inf));
24 EXPECT_FP_EQ_ALL_ROUNDING(-1.0f, LIBC_NAMESPACE::exp10m1f(neg_inf));
25 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::exp10m1f(zero));
26 EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::exp10m1f(neg_zero));
27
28 EXPECT_FP_EQ_ALL_ROUNDING(9.0f, LIBC_NAMESPACE::exp10m1f(1.0f));
29 EXPECT_FP_EQ_ALL_ROUNDING(99.0f, LIBC_NAMESPACE::exp10m1f(2.0f));
30 EXPECT_FP_EQ_ALL_ROUNDING(999.0f, LIBC_NAMESPACE::exp10m1f(3.0f));
31 }
32
TEST_F(LlvmLibcExp10m1fTest,Overflow)33 TEST_F(LlvmLibcExp10m1fTest, Overflow) {
34 LIBC_NAMESPACE::libc_errno = 0;
35
36 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp10m1f(0x1.fffffep+127f),
37 FE_OVERFLOW);
38 EXPECT_MATH_ERRNO(ERANGE);
39
40 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp10m1f(0x1.344136p+5),
41 FE_OVERFLOW);
42 EXPECT_MATH_ERRNO(ERANGE);
43
44 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp10m1f(0x1.344138p+5),
45 FE_OVERFLOW);
46 EXPECT_MATH_ERRNO(ERANGE);
47 }
48
TEST_F(LlvmLibcExp10m1fTest,Underflow)49 TEST_F(LlvmLibcExp10m1fTest, Underflow) {
50 LIBC_NAMESPACE::libc_errno = 0;
51
52 EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp10m1f(-max_normal),
53 FE_UNDERFLOW);
54 EXPECT_MATH_ERRNO(ERANGE);
55
56 EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp10m1f(-0x1.e1a5e4p+2f),
57 FE_UNDERFLOW);
58 EXPECT_MATH_ERRNO(ERANGE);
59 }
60