55 lines · cpp
1//===-- Unittests for erff ------------------------------------------------===//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/math_macros.h"10#include "hdr/stdint_proxy.h"11#include "src/__support/FPUtil/FPBits.h"12#include "src/math/erff.h"13#include "test/UnitTest/FPMatcher.h"14#include "test/UnitTest/Test.h"15 16using LlvmLibcErffTest = LIBC_NAMESPACE::testing::FPTest<float>;17 18TEST_F(LlvmLibcErffTest, SpecialNumbers) {19 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::erff(sNaN), FE_INVALID);20 EXPECT_MATH_ERRNO(0);21 22 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::erff(aNaN));23 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::erff(inf));24 EXPECT_FP_EQ_ALL_ROUNDING(-1.0f, LIBC_NAMESPACE::erff(neg_inf));25 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::erff(zero));26 EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::erff(neg_zero));27}28 29#ifdef LIBC_TEST_FTZ_DAZ30 31using namespace LIBC_NAMESPACE::testing;32 33TEST_F(LlvmLibcErffTest, FTZMode) {34 ModifyMXCSR mxcsr(FTZ);35 36 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal));37 EXPECT_FP_EQ(0x1.20dd72p-126f, LIBC_NAMESPACE::erff(max_denormal));38}39 40TEST_F(LlvmLibcErffTest, DAZMode) {41 ModifyMXCSR mxcsr(DAZ);42 43 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal));44 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(max_denormal));45}46 47TEST_F(LlvmLibcErffTest, FTZDAZMode) {48 ModifyMXCSR mxcsr(FTZ | DAZ);49 50 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal));51 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(max_denormal));52}53 54#endif55