| //===-- Unittests for asinf |
| //------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/__support/FPUtil/FPBits.h" |
| #include "src/errno/libc_errno.h" |
| #include "src/math/asinf.h" |
| #include "test/UnitTest/FPMatcher.h" |
| #include "test/UnitTest/Test.h" |
| #include "utils/MPFRWrapper/MPFRUtils.h" |
| #include <math.h> |
| |
| #include <errno.h> |
| #include <stdint.h> |
| |
| using FPBits = __llvm_libc::fputil::FPBits<float>; |
| |
| namespace mpfr = __llvm_libc::testing::mpfr; |
| |
| DECLARE_SPECIAL_CONSTANTS(float) |
| |
| TEST(LlvmLibcAsinfTest, SpecialNumbers) { |
| libc_errno = 0; |
| |
| EXPECT_FP_EQ(aNaN, __llvm_libc::asinf(aNaN)); |
| EXPECT_MATH_ERRNO(0); |
| |
| EXPECT_FP_EQ(0.0f, __llvm_libc::asinf(0.0f)); |
| EXPECT_MATH_ERRNO(0); |
| |
| EXPECT_FP_EQ(-0.0f, __llvm_libc::asinf(-0.0f)); |
| EXPECT_MATH_ERRNO(0); |
| |
| EXPECT_FP_EQ(aNaN, __llvm_libc::asinf(inf)); |
| EXPECT_MATH_ERRNO(EDOM); |
| |
| EXPECT_FP_EQ(aNaN, __llvm_libc::asinf(neg_inf)); |
| EXPECT_MATH_ERRNO(EDOM); |
| } |
| |
| TEST(LlvmLibcAsinfTest, InFloatRange) { |
| constexpr uint32_t COUNT = 100'000; |
| constexpr uint32_t STEP = UINT32_MAX / COUNT; |
| for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) { |
| float x = float(FPBits(v)); |
| if (isnan(x) || isinf(x)) |
| continue; |
| ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asin, x, |
| __llvm_libc::asinf(x), 0.5); |
| } |
| } |
| |
| TEST(LlvmLibcAsinfTest, SpecificBitPatterns) { |
| constexpr int N = 11; |
| constexpr uint32_t INPUTS[N] = { |
| 0x3f000000, // x = 0.5f |
| 0x3f3504f3, // x = sqrt(2)/2, FE_DOWNWARD |
| 0x3f3504f4, // x = sqrt(2)/2, FE_UPWARD |
| 0x3f5db3d7, // x = sqrt(3)/2, FE_DOWNWARD |
| 0x3f5db3d8, // x = sqrt(3)/2, FE_UPWARD |
| 0x3f800000, // x = 1.0f |
| 0x40000000, // x = 2.0f |
| 0x3d09bf86, // x = 0x1.137f0cp-5f |
| 0x3de5fa1e, // x = 0x1.cbf43cp-4f |
| 0x3f083a1a, // x = 0x1.107434p-1f |
| 0x3f7741b6, // x = 0x1.ee836cp-1f |
| }; |
| |
| for (int i = 0; i < N; ++i) { |
| float x = float(FPBits(INPUTS[i])); |
| EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asin, x, |
| __llvm_libc::asinf(x), 0.5); |
| EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asin, -x, |
| __llvm_libc::asinf(-x), 0.5); |
| } |
| } |