1 //===-- Unittests for asinf 2 //------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "hdr/math_macros.h" 11 #include "src/__support/FPUtil/FPBits.h" 12 #include "src/errno/libc_errno.h" 13 #include "src/math/asinf.h" 14 #include "test/UnitTest/FPMatcher.h" 15 #include "test/UnitTest/Test.h" 16 #include "utils/MPFRWrapper/MPFRUtils.h" 17 18 #include <stdint.h> 19 20 using LlvmLibcAsinfTest = LIBC_NAMESPACE::testing::FPTest<float>; 21 22 namespace mpfr = LIBC_NAMESPACE::testing::mpfr; 23 24 TEST_F(LlvmLibcAsinfTest, SpecialNumbers) { 25 LIBC_NAMESPACE::libc_errno = 0; 26 27 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asinf(aNaN)); 28 EXPECT_MATH_ERRNO(0); 29 30 EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::asinf(0.0f)); 31 EXPECT_MATH_ERRNO(0); 32 33 EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::asinf(-0.0f)); 34 EXPECT_MATH_ERRNO(0); 35 36 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asinf(inf)); 37 EXPECT_MATH_ERRNO(EDOM); 38 39 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asinf(neg_inf)); 40 EXPECT_MATH_ERRNO(EDOM); 41 } 42 43 TEST_F(LlvmLibcAsinfTest, InFloatRange) { 44 constexpr uint32_t COUNT = 100'000; 45 constexpr uint32_t STEP = UINT32_MAX / COUNT; 46 for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) { 47 float x = FPBits(v).get_val(); 48 if (FPBits(v).is_nan() || FPBits(v).is_inf()) 49 continue; 50 ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asin, x, 51 LIBC_NAMESPACE::asinf(x), 0.5); 52 } 53 } 54 55 TEST_F(LlvmLibcAsinfTest, SpecificBitPatterns) { 56 constexpr int N = 11; 57 constexpr uint32_t INPUTS[N] = { 58 0x3f000000, // x = 0.5f 59 0x3f3504f3, // x = sqrt(2)/2, FE_DOWNWARD 60 0x3f3504f4, // x = sqrt(2)/2, FE_UPWARD 61 0x3f5db3d7, // x = sqrt(3)/2, FE_DOWNWARD 62 0x3f5db3d8, // x = sqrt(3)/2, FE_UPWARD 63 0x3f800000, // x = 1.0f 64 0x40000000, // x = 2.0f 65 0x3d09bf86, // x = 0x1.137f0cp-5f 66 0x3de5fa1e, // x = 0x1.cbf43cp-4f 67 0x3f083a1a, // x = 0x1.107434p-1f 68 0x3f7741b6, // x = 0x1.ee836cp-1f 69 }; 70 71 for (int i = 0; i < N; ++i) { 72 float x = FPBits(INPUTS[i]).get_val(); 73 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asin, x, 74 LIBC_NAMESPACE::asinf(x), 0.5); 75 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asin, -x, 76 LIBC_NAMESPACE::asinf(-x), 0.5); 77 } 78 } 79