1//===-- Unittests for log -------------------------------------------------===//
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/errno/libc_errno.h"
12#include "src/math/log.h"
13#include "test/UnitTest/FPMatcher.h"
14#include "test/UnitTest/Test.h"
15
16#include <errno.h>
17#include <stdint.h>
18
19using LlvmLibcLogTest = LIBC_NAMESPACE::testing::FPTest<double>;
20
21TEST_F(LlvmLibcLogTest, SpecialNumbers) {
22 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::log(aNaN));
23 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::log(inf));
24 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log(neg_inf), FE_INVALID);
25 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log(0.0), FE_DIVBYZERO);
26 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log(-0.0), FE_DIVBYZERO);
27 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log(-1.0), FE_INVALID);
28 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::log(1.0));
29}
30

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