1//===-- Unittests for tanhf -----------------------------------------------===//
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/FPUtil/FPBits.h"
11#include "src/__support/libc_errno.h"
12#include "src/math/tanhf.h"
13#include "test/UnitTest/FPMatcher.h"
14#include "test/UnitTest/Test.h"
15
16#include <stdint.h>
17
18using LlvmLibcTanhfTest = LIBC_NAMESPACE::testing::FPTest<float>;
19
20TEST_F(LlvmLibcTanhfTest, SpecialNumbers) {
21 libc_errno = 0;
22
23 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::tanhf(sNaN), FE_INVALID);
24 EXPECT_MATH_ERRNO(0);
25
26 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::tanhf(aNaN));
27 EXPECT_MATH_ERRNO(0);
28
29 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::tanhf(0.0f));
30 EXPECT_MATH_ERRNO(0);
31
32 EXPECT_FP_EQ(-0.0f, LIBC_NAMESPACE::tanhf(-0.0f));
33 EXPECT_MATH_ERRNO(0);
34
35 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::tanhf(inf));
36 EXPECT_MATH_ERRNO(0);
37
38 EXPECT_FP_EQ(-1.0f, LIBC_NAMESPACE::tanhf(neg_inf));
39 EXPECT_MATH_ERRNO(0);
40}
41
42#ifdef LIBC_TEST_FTZ_DAZ
43
44using namespace LIBC_NAMESPACE::testing;
45
46TEST_F(LlvmLibcTanhfTest, FTZMode) {
47 ModifyMXCSR mxcsr(FTZ);
48
49 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::tanhf(min_denormal));
50 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::tanhf(max_denormal));
51}
52
53TEST_F(LlvmLibcTanhfTest, DAZMode) {
54 ModifyMXCSR mxcsr(DAZ);
55
56 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::tanhf(min_denormal));
57 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::tanhf(max_denormal));
58}
59
60TEST_F(LlvmLibcTanhfTest, FTZDAZMode) {
61 ModifyMXCSR mxcsr(FTZ | DAZ);
62
63 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::tanhf(min_denormal));
64 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::tanhf(max_denormal));
65}
66
67#endif
68

source code of libc/test/src/math/smoke/tanhf_test.cpp