66 lines · cpp
1//===-- Unittests for exp -------------------------------------------------===//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/exp.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17using LlvmLibcExpTest = LIBC_NAMESPACE::testing::FPTest<double>;18 19TEST_F(LlvmLibcExpTest, SpecialNumbers) {20 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::exp(sNaN), FE_INVALID);21 EXPECT_MATH_ERRNO(0);22 23 EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::exp(aNaN));24 EXPECT_MATH_ERRNO(0);25 EXPECT_FP_EQ(inf, LIBC_NAMESPACE::exp(inf));26 EXPECT_MATH_ERRNO(0);27 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::exp(neg_inf));28 EXPECT_MATH_ERRNO(0);29 30 EXPECT_FP_EQ_WITH_EXCEPTION(zero, LIBC_NAMESPACE::exp(-0x1.0p20),31 FE_UNDERFLOW);32 EXPECT_MATH_ERRNO(ERANGE);33 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp(0x1.0p20), FE_OVERFLOW);34 EXPECT_MATH_ERRNO(ERANGE);35 36 EXPECT_FP_EQ_ALL_ROUNDING(1.0, LIBC_NAMESPACE::exp(0.0));37 EXPECT_FP_EQ_ALL_ROUNDING(1.0, LIBC_NAMESPACE::exp(-0.0));38}39 40#ifdef LIBC_TEST_FTZ_DAZ41 42using namespace LIBC_NAMESPACE::testing;43 44TEST_F(LlvmLibcExpTest, FTZMode) {45 ModifyMXCSR mxcsr(FTZ);46 47 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp(min_denormal));48 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp(max_denormal));49}50 51TEST_F(LlvmLibcExpTest, DAZMode) {52 ModifyMXCSR mxcsr(DAZ);53 54 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp(min_denormal));55 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp(max_denormal));56}57 58TEST_F(LlvmLibcExpTest, FTZDAZMode) {59 ModifyMXCSR mxcsr(FTZ | DAZ);60 61 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp(min_denormal));62 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::exp(max_denormal));63}64 65#endif66