62 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9#include "hdr/errno_macros.h"10#include "hdr/math_macros.h"11#include "hdr/stdint_proxy.h"12#include "src/__support/FPUtil/FPBits.h"13#include "src/math/log.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17using LlvmLibcLogTest = LIBC_NAMESPACE::testing::FPTest<double>;18 19TEST_F(LlvmLibcLogTest, SpecialNumbers) {20 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::log(sNaN), FE_INVALID);21 EXPECT_MATH_ERRNO(0);22 23 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::log(aNaN));24 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::log(inf));25 EXPECT_MATH_ERRNO(0);26 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log(neg_inf), FE_INVALID);27 EXPECT_MATH_ERRNO(EDOM);28 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log(0.0), FE_DIVBYZERO);29 EXPECT_MATH_ERRNO(ERANGE);30 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log(-0.0), FE_DIVBYZERO);31 EXPECT_MATH_ERRNO(ERANGE);32 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log(-1.0), FE_INVALID);33 EXPECT_MATH_ERRNO(EDOM);34 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::log(1.0));35}36 37#ifdef LIBC_TEST_FTZ_DAZ38 39using namespace LIBC_NAMESPACE::testing;40 41TEST_F(LlvmLibcLogTest, FTZMode) {42 ModifyMXCSR mxcsr(FTZ);43 44 EXPECT_FP_EQ(-0x1.74385446d71c3p9, LIBC_NAMESPACE::log(min_denormal));45}46 47TEST_F(LlvmLibcLogTest, DAZMode) {48 ModifyMXCSR mxcsr(DAZ);49 50 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(),51 LIBC_NAMESPACE::log(min_denormal));52}53 54TEST_F(LlvmLibcLogTest, FTZDAZMode) {55 ModifyMXCSR mxcsr(FTZ | DAZ);56 57 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(),58 LIBC_NAMESPACE::log(min_denormal));59}60 61#endif62