1//===-- Unittests for logf-----------------------------------------------===//
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/math/logf.h"
12#include "test/UnitTest/FPMatcher.h"
13#include "test/UnitTest/Test.h"
14
15#include <stdint.h>
16
17using LlvmLibcLogfTest = LIBC_NAMESPACE::testing::FPTest<float>;
18
19TEST_F(LlvmLibcLogfTest, SpecialNumbers) {
20 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::logf(sNaN), FE_INVALID);
21 EXPECT_MATH_ERRNO(0);
22
23 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::logf(aNaN));
24 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::logf(inf));
25 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::logf(neg_inf), FE_INVALID);
26 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::logf(0.0f),
27 FE_DIVBYZERO);
28 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::logf(-0.0f),
29 FE_DIVBYZERO);
30 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::logf(-1.0f), FE_INVALID);
31 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::logf(1.0f));
32}
33#ifdef LIBC_TEST_FTZ_DAZ
34
35using namespace LIBC_NAMESPACE::testing;
36
37TEST_F(LlvmLibcLogfTest, FTZMode) {
38 ModifyMXCSR mxcsr(FTZ);
39
40 EXPECT_FP_EQ(-0x1.9d1d9fccf477p6f, LIBC_NAMESPACE::logf(min_denormal));
41}
42
43TEST_F(LlvmLibcLogfTest, DAZMode) {
44 ModifyMXCSR mxcsr(DAZ);
45
46 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(),
47 LIBC_NAMESPACE::logf(min_denormal));
48}
49
50TEST_F(LlvmLibcLogfTest, FTZDAZMode) {
51 ModifyMXCSR mxcsr(FTZ | DAZ);
52
53 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(),
54 LIBC_NAMESPACE::logf(min_denormal));
55}
56
57#endif
58

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