1 //===-- Unittests for acosf -----------------------------------------------===// 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/errno/libc_errno.h" 12 #include "src/math/acosf.h" 13 #include "test/UnitTest/FPMatcher.h" 14 #include "test/UnitTest/Test.h" 15 16 #include <stdint.h> 17 18 using LlvmLibcAcosfTest = LIBC_NAMESPACE::testing::FPTest<float>; 19 20 TEST_F(LlvmLibcAcosfTest, SpecialNumbers) { 21 LIBC_NAMESPACE::libc_errno = 0; 22 23 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(aNaN)); 24 EXPECT_MATH_ERRNO(0); 25 26 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(inf)); 27 EXPECT_MATH_ERRNO(EDOM); 28 29 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(neg_inf)); 30 EXPECT_MATH_ERRNO(EDOM); 31 32 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::acosf(1.0f)); 33 EXPECT_MATH_ERRNO(0); 34 35 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(2.0f)); 36 EXPECT_MATH_ERRNO(EDOM); 37 38 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(-2.0f)); 39 EXPECT_MATH_ERRNO(EDOM); 40 } 41 42 #ifdef LIBC_TEST_FTZ_DAZ 43 44 using namespace LIBC_NAMESPACE::testing; 45 46 TEST_F(LlvmLibcAcosfTest, FTZMode) { 47 ModifyMXCSR mxcsr(FTZ); 48 49 EXPECT_FP_EQ(0x1.921fb6p0f, LIBC_NAMESPACE::acosf(min_denormal)); 50 } 51 52 TEST_F(LlvmLibcAcosfTest, DAZMode) { 53 ModifyMXCSR mxcsr(DAZ); 54 55 EXPECT_FP_EQ(0x1.921fb6p0f, LIBC_NAMESPACE::acosf(min_denormal)); 56 } 57 58 TEST_F(LlvmLibcAcosfTest, FTZDAZMode) { 59 ModifyMXCSR mxcsr(FTZ | DAZ); 60 61 EXPECT_FP_EQ(0x1.921fb6p0f, LIBC_NAMESPACE::acosf(min_denormal)); 62 } 63 64 #endif 65