84 lines · cpp
1//===-- Unittests for exp2f -----------------------------------------------===//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/exp2f.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17using LlvmLibcExp2fTest = LIBC_NAMESPACE::testing::FPTest<float>;18 19TEST_F(LlvmLibcExp2fTest, SpecialNumbers) {20 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::exp2f(sNaN), FE_INVALID);21 EXPECT_MATH_ERRNO(0);22 23 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::exp2f(aNaN));24 EXPECT_MATH_ERRNO(0);25 26 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::exp2f(inf));27 EXPECT_MATH_ERRNO(0);28 29 EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::exp2f(neg_inf));30 EXPECT_MATH_ERRNO(0);31 32 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::exp2f(0.0f));33 EXPECT_MATH_ERRNO(0);34 35 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::exp2f(-0.0f));36 EXPECT_MATH_ERRNO(0);37 38 EXPECT_FP_EQ_ALL_ROUNDING(2.0f, LIBC_NAMESPACE::exp2f(1.0f));39 EXPECT_FP_EQ_ALL_ROUNDING(0.5f, LIBC_NAMESPACE::exp2f(-1.0f));40 EXPECT_FP_EQ_ALL_ROUNDING(4.0f, LIBC_NAMESPACE::exp2f(2.0f));41 EXPECT_FP_EQ_ALL_ROUNDING(0.25f, LIBC_NAMESPACE::exp2f(-2.0f));42}43 44TEST_F(LlvmLibcExp2fTest, Overflow) {45 EXPECT_FP_EQ_WITH_EXCEPTION(46 inf, LIBC_NAMESPACE::exp2f(FPBits(0x7f7fffffU).get_val()), FE_OVERFLOW);47 EXPECT_MATH_ERRNO(ERANGE);48 49 EXPECT_FP_EQ_WITH_EXCEPTION(50 inf, LIBC_NAMESPACE::exp2f(FPBits(0x43000000U).get_val()), FE_OVERFLOW);51 EXPECT_MATH_ERRNO(ERANGE);52 53 EXPECT_FP_EQ_WITH_EXCEPTION(54 inf, LIBC_NAMESPACE::exp2f(FPBits(0x43000001U).get_val()), FE_OVERFLOW);55 EXPECT_MATH_ERRNO(ERANGE);56}57 58#ifdef LIBC_TEST_FTZ_DAZ59 60using namespace LIBC_NAMESPACE::testing;61 62TEST_F(LlvmLibcExp2fTest, FTZMode) {63 ModifyMXCSR mxcsr(FTZ);64 65 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::exp2f(min_denormal));66 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::exp2f(max_denormal));67}68 69TEST_F(LlvmLibcExp2fTest, DAZMode) {70 ModifyMXCSR mxcsr(DAZ);71 72 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::exp2f(min_denormal));73 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::exp2f(max_denormal));74}75 76TEST_F(LlvmLibcExp2fTest, FTZDAZMode) {77 ModifyMXCSR mxcsr(FTZ | DAZ);78 79 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::exp2f(min_denormal));80 EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::exp2f(max_denormal));81}82 83#endif84