79 lines · cpp
1//===-- Unittests for expf ------------------------------------------------===//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/expf.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17using LlvmLibcExpfTest = LIBC_NAMESPACE::testing::FPTest<float>;18 19TEST_F(LlvmLibcExpfTest, SpecialNumbers) {20 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::expf(sNaN), FE_INVALID);21 EXPECT_MATH_ERRNO(0);22 23 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::expf(aNaN));24 EXPECT_MATH_ERRNO(0);25 26 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::expf(inf));27 EXPECT_MATH_ERRNO(0);28 29 EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::expf(neg_inf));30 EXPECT_MATH_ERRNO(0);31 32 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::expf(0.0f));33 EXPECT_MATH_ERRNO(0);34 35 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::expf(-0.0f));36 EXPECT_MATH_ERRNO(0);37}38 39TEST_F(LlvmLibcExpfTest, Overflow) {40 EXPECT_FP_EQ_WITH_EXCEPTION(41 inf, LIBC_NAMESPACE::expf(FPBits(0x7f7fffffU).get_val()), FE_OVERFLOW);42 EXPECT_MATH_ERRNO(ERANGE);43 44 EXPECT_FP_EQ_WITH_EXCEPTION(45 inf, LIBC_NAMESPACE::expf(FPBits(0x42cffff8U).get_val()), FE_OVERFLOW);46 EXPECT_MATH_ERRNO(ERANGE);47 48 EXPECT_FP_EQ_WITH_EXCEPTION(49 inf, LIBC_NAMESPACE::expf(FPBits(0x42d00008U).get_val()), FE_OVERFLOW);50 EXPECT_MATH_ERRNO(ERANGE);51}52 53#ifdef LIBC_TEST_FTZ_DAZ54 55using namespace LIBC_NAMESPACE::testing;56 57TEST_F(LlvmLibcExpfTest, FTZMode) {58 ModifyMXCSR mxcsr(FTZ);59 60 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::expf(min_denormal));61 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::expf(max_denormal));62}63 64TEST_F(LlvmLibcExpfTest, DAZMode) {65 ModifyMXCSR mxcsr(DAZ);66 67 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::expf(min_denormal));68 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::expf(max_denormal));69}70 71TEST_F(LlvmLibcExpfTest, FTZDAZMode) {72 ModifyMXCSR mxcsr(FTZ | DAZ);73 74 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::expf(min_denormal));75 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::expf(max_denormal));76}77 78#endif79