88 lines · cpp
1//===-- Unittests for exp2m1f ---------------------------------------------===//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 "src/math/exp2m1f.h"11#include "test/UnitTest/FPMatcher.h"12#include "test/UnitTest/Test.h"13 14using LlvmLibcExp2m1fTest = LIBC_NAMESPACE::testing::FPTest<float>;15using LIBC_NAMESPACE::fputil::testing::ForceRoundingMode;16using LIBC_NAMESPACE::fputil::testing::RoundingMode;17 18TEST_F(LlvmLibcExp2m1fTest, SpecialNumbers) {19 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::exp2m1f(sNaN), FE_INVALID);20 EXPECT_MATH_ERRNO(0);21 22 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::exp2m1f(aNaN));23 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::exp2m1f(inf));24 EXPECT_FP_EQ_ALL_ROUNDING(-1.0f, LIBC_NAMESPACE::exp2m1f(neg_inf));25 EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::exp2m1f(0.0f));26 EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::exp2m1f(-0.0f));27 28 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::exp2m1f(1.0f));29 EXPECT_FP_EQ_ALL_ROUNDING(-0.5f, LIBC_NAMESPACE::exp2m1f(-1.0f));30 EXPECT_FP_EQ_ALL_ROUNDING(3.0f, LIBC_NAMESPACE::exp2m1f(2.0f));31 EXPECT_FP_EQ_ALL_ROUNDING(-0.75f, LIBC_NAMESPACE::exp2m1f(-2.0f));32}33 34TEST_F(LlvmLibcExp2m1fTest, Overflow) {35 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.fffffep+127),36 FE_OVERFLOW);37 EXPECT_MATH_ERRNO(ERANGE);38 39 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(128.0f),40 FE_OVERFLOW);41 EXPECT_MATH_ERRNO(ERANGE);42 43 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.000002p+7),44 FE_OVERFLOW);45 EXPECT_MATH_ERRNO(ERANGE);46}47 48TEST_F(LlvmLibcExp2m1fTest, Underflow) {49 EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.fffffep+127),50 FE_UNDERFLOW);51 EXPECT_MATH_ERRNO(ERANGE);52 53 EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-25.0f),54 FE_UNDERFLOW);55 EXPECT_MATH_ERRNO(ERANGE);56 57 EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.900002p4),58 FE_UNDERFLOW);59 EXPECT_MATH_ERRNO(ERANGE);60}61 62#ifdef LIBC_TEST_FTZ_DAZ63 64using namespace LIBC_NAMESPACE::testing;65 66TEST_F(LlvmLibcExp2m1fTest, FTZMode) {67 ModifyMXCSR mxcsr(FTZ);68 69 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::exp2m1f(min_denormal));70 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::exp2m1f(max_denormal));71}72 73TEST_F(LlvmLibcExp2m1fTest, DAZMode) {74 ModifyMXCSR mxcsr(DAZ);75 76 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::exp2m1f(min_denormal));77 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::exp2m1f(max_denormal));78}79 80TEST_F(LlvmLibcExp2m1fTest, FTZDAZMode) {81 ModifyMXCSR mxcsr(FTZ | DAZ);82 83 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::exp2m1f(min_denormal));84 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::exp2m1f(max_denormal));85}86 87#endif88