1//===-- Unittests for sinhf -----------------------------------------------===//
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 "hdr/math_macros.h"
10#include "src/__support/CPP/array.h"
11#include "src/__support/FPUtil/FPBits.h"
12#include "src/errno/libc_errno.h"
13#include "src/math/sinhf.h"
14#include "test/UnitTest/FPMatcher.h"
15#include "test/UnitTest/Test.h"
16#include "utils/MPFRWrapper/MPFRUtils.h"
17
18#include <errno.h>
19#include <stdint.h>
20
21using LlvmLibcSinhfTest = LIBC_NAMESPACE::testing::FPTest<float>;
22
23namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
24
25TEST_F(LlvmLibcSinhfTest, SpecialNumbers) {
26 LIBC_NAMESPACE::libc_errno = 0;
27
28 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::sinhf(aNaN));
29 EXPECT_MATH_ERRNO(0);
30
31 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::sinhf(0.0f));
32 EXPECT_MATH_ERRNO(0);
33
34 EXPECT_FP_EQ(-0.0f, LIBC_NAMESPACE::sinhf(-0.0f));
35 EXPECT_MATH_ERRNO(0);
36
37 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::sinhf(inf));
38 EXPECT_MATH_ERRNO(0);
39
40 EXPECT_FP_EQ(neg_inf, LIBC_NAMESPACE::sinhf(neg_inf));
41 EXPECT_MATH_ERRNO(0);
42}
43
44TEST_F(LlvmLibcSinhfTest, InFloatRange) {
45 constexpr uint32_t COUNT = 100'000;
46 constexpr uint32_t STEP = UINT32_MAX / COUNT;
47 for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
48 float x = FPBits(v).get_val();
49 if (isnan(x: x) || isinf(x: x))
50 continue;
51 ASSERT_MPFR_MATCH(mpfr::Operation::Sinh, x, LIBC_NAMESPACE::sinhf(x), 0.5);
52 }
53}
54
55// For small values, sinh(x) is x.
56TEST_F(LlvmLibcSinhfTest, SmallValues) {
57 float x = FPBits(uint32_t(0x17800000)).get_val();
58 float result = LIBC_NAMESPACE::sinhf(x);
59 EXPECT_MPFR_MATCH(mpfr::Operation::Sinh, x, result, 0.5);
60 EXPECT_FP_EQ(x, result);
61
62 x = FPBits(uint32_t(0x00400000)).get_val();
63 result = LIBC_NAMESPACE::sinhf(x);
64 EXPECT_MPFR_MATCH(mpfr::Operation::Sinh, x, result, 0.5);
65 EXPECT_FP_EQ(x, result);
66}
67
68TEST_F(LlvmLibcSinhfTest, Overflow) {
69 LIBC_NAMESPACE::libc_errno = 0;
70 EXPECT_FP_EQ_WITH_EXCEPTION(
71 inf, LIBC_NAMESPACE::sinhf(FPBits(0x7f7fffffU).get_val()), FE_OVERFLOW);
72 EXPECT_MATH_ERRNO(ERANGE);
73
74 EXPECT_FP_EQ_WITH_EXCEPTION(
75 inf, LIBC_NAMESPACE::sinhf(FPBits(0x42cffff8U).get_val()), FE_OVERFLOW);
76 EXPECT_MATH_ERRNO(ERANGE);
77
78 EXPECT_FP_EQ_WITH_EXCEPTION(
79 inf, LIBC_NAMESPACE::sinhf(FPBits(0x42d00008U).get_val()), FE_OVERFLOW);
80 EXPECT_MATH_ERRNO(ERANGE);
81}
82
83TEST_F(LlvmLibcSinhfTest, ExceptionalValues) {
84 float x = FPBits(uint32_t(0x3a12'85ffU)).get_val();
85 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Sinh, x,
86 LIBC_NAMESPACE::sinhf(x), 0.5);
87
88 x = -FPBits(uint32_t(0x3a12'85ffU)).get_val();
89 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Sinh, x,
90 LIBC_NAMESPACE::sinhf(x), 0.5);
91}
92

source code of libc/test/src/math/sinhf_test.cpp