70 lines · cpp
1//===-- Unittests for log10 -----------------------------------------------===//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/log10.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17using LlvmLibcLog10Test = LIBC_NAMESPACE::testing::FPTest<double>;18 19TEST_F(LlvmLibcLog10Test, SpecialNumbers) {20 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::log10(sNaN), FE_INVALID);21 EXPECT_MATH_ERRNO(0);22 23 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::log10(aNaN));24 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::log10(inf));25 EXPECT_MATH_ERRNO(0);26 27 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log10(neg_inf), FE_INVALID);28 EXPECT_MATH_ERRNO(EDOM);29 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log10(0.0),30 FE_DIVBYZERO);31 EXPECT_MATH_ERRNO(ERANGE);32 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log10(-0.0),33 FE_DIVBYZERO);34 EXPECT_MATH_ERRNO(ERANGE);35 EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log10(-1.0), FE_INVALID);36 EXPECT_MATH_ERRNO(EDOM);37 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::log10(1.0));38 39 double x = 1.0;40 for (int i = 0; i < 11; ++i, x *= 10.0) {41 EXPECT_FP_EQ_ALL_ROUNDING(static_cast<double>(i), LIBC_NAMESPACE::log10(x));42 }43}44 45#ifdef LIBC_TEST_FTZ_DAZ46 47using namespace LIBC_NAMESPACE::testing;48 49TEST_F(LlvmLibcLog10Test, FTZMode) {50 ModifyMXCSR mxcsr(FTZ);51 52 EXPECT_FP_EQ(-0x1.434e6420f4374p8, LIBC_NAMESPACE::log10(min_denormal));53}54 55TEST_F(LlvmLibcLog10Test, DAZMode) {56 ModifyMXCSR mxcsr(DAZ);57 58 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(),59 LIBC_NAMESPACE::log10(min_denormal));60}61 62TEST_F(LlvmLibcLog10Test, FTZDAZMode) {63 ModifyMXCSR mxcsr(FTZ | DAZ);64 65 EXPECT_FP_EQ(FPBits::inf(Sign::NEG).get_val(),66 LIBC_NAMESPACE::log10(min_denormal));67}68 69#endif70