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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "hdr/math_macros.h" 10 #include "src/__support/FPUtil/FPBits.h" 11 #include "src/math/erff.h" 12 #include "test/UnitTest/FPMatcher.h" 13 #include "test/UnitTest/Test.h" 14 15 #include <stdint.h> 16 17 using LlvmLibcErffTest = LIBC_NAMESPACE::testing::FPTest<float>; 18 19 TEST_F(LlvmLibcErffTest, SpecialNumbers) { 20 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::erff(aNaN)); 21 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::erff(inf)); 22 EXPECT_FP_EQ_ALL_ROUNDING(-1.0f, LIBC_NAMESPACE::erff(neg_inf)); 23 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::erff(zero)); 24 EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::erff(neg_zero)); 25 } 26 27 #ifdef LIBC_TEST_FTZ_DAZ 28 29 using namespace LIBC_NAMESPACE::testing; 30 31 TEST_F(LlvmLibcErffTest, FTZMode) { 32 ModifyMXCSR mxcsr(FTZ); 33 34 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal)); 35 EXPECT_FP_EQ(0x1.20dd72p-126f, LIBC_NAMESPACE::erff(max_denormal)); 36 } 37 38 TEST_F(LlvmLibcErffTest, DAZMode) { 39 ModifyMXCSR mxcsr(DAZ); 40 41 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal)); 42 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(max_denormal)); 43 } 44 45 TEST_F(LlvmLibcErffTest, FTZDAZMode) { 46 ModifyMXCSR mxcsr(FTZ | DAZ); 47 48 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal)); 49 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(max_denormal)); 50 } 51 52 #endif 53