| //===-- Unittests for sincosf ---------------------------------------------===// |
| // |
| // 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/math/sincosf.h" |
| #include "test/src/math/sdcomp26094.h" |
| #include "utils/MPFRWrapper/MPFRUtils.h" |
| #include "utils/UnitTest/FPMatcher.h" |
| #include "utils/UnitTest/Test.h" |
| #include <math.h> |
| |
| #include <errno.h> |
| #include <stdint.h> |
| |
| using __llvm_libc::testing::SDCOMP26094_VALUES; |
| using FPBits = __llvm_libc::fputil::FPBits<float>; |
| |
| namespace mpfr = __llvm_libc::testing::mpfr; |
| |
| DECLARE_SPECIAL_CONSTANTS(float) |
| |
| TEST(LlvmLibcSinCosfTest, SpecialNumbers) { |
| errno = 0; |
| float sin, cos; |
| |
| __llvm_libc::sincosf(aNaN, &sin, &cos); |
| EXPECT_FP_EQ(aNaN, cos); |
| EXPECT_FP_EQ(aNaN, sin); |
| EXPECT_MATH_ERRNO(0); |
| |
| __llvm_libc::sincosf(0.0f, &sin, &cos); |
| EXPECT_FP_EQ(1.0f, cos); |
| EXPECT_FP_EQ(0.0f, sin); |
| EXPECT_MATH_ERRNO(0); |
| |
| __llvm_libc::sincosf(-0.0f, &sin, &cos); |
| EXPECT_FP_EQ(1.0f, cos); |
| EXPECT_FP_EQ(-0.0f, sin); |
| EXPECT_MATH_ERRNO(0); |
| |
| __llvm_libc::sincosf(inf, &sin, &cos); |
| EXPECT_FP_EQ(aNaN, cos); |
| EXPECT_FP_EQ(aNaN, sin); |
| EXPECT_MATH_ERRNO(EDOM); |
| |
| __llvm_libc::sincosf(neg_inf, &sin, &cos); |
| EXPECT_FP_EQ(aNaN, cos); |
| EXPECT_FP_EQ(aNaN, sin); |
| EXPECT_MATH_ERRNO(EDOM); |
| } |
| |
| TEST(LlvmLibcSinCosfTest, InFloatRange) { |
| constexpr uint32_t COUNT = 1000000; |
| 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; |
| |
| float sin, cos; |
| __llvm_libc::sincosf(x, &sin, &cos); |
| ASSERT_MPFR_MATCH(mpfr::Operation::Cos, x, cos, 1.0); |
| ASSERT_MPFR_MATCH(mpfr::Operation::Sin, x, sin, 1.0); |
| } |
| } |
| |
| // For small values, cos(x) is 1 and sin(x) is x. |
| TEST(LlvmLibcSinCosfTest, SmallValues) { |
| uint32_t bits = 0x17800000; |
| float x = float(FPBits((bits))); |
| float result_cos, result_sin; |
| __llvm_libc::sincosf(x, &result_sin, &result_cos); |
| EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, result_cos, 1.0); |
| EXPECT_MPFR_MATCH(mpfr::Operation::Sin, x, result_sin, 1.0); |
| EXPECT_FP_EQ(1.0f, result_cos); |
| EXPECT_FP_EQ(x, result_sin); |
| |
| bits = 0x00400000; |
| x = float(FPBits((bits))); |
| __llvm_libc::sincosf(x, &result_sin, &result_cos); |
| EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, result_cos, 1.0); |
| EXPECT_MPFR_MATCH(mpfr::Operation::Sin, x, result_sin, 1.0); |
| EXPECT_FP_EQ(1.0f, result_cos); |
| EXPECT_FP_EQ(x, result_sin); |
| } |
| |
| // SDCOMP-26094: check sinf in the cases for which the range reducer |
| // returns values furthest beyond its nominal upper bound of pi/4. |
| TEST(LlvmLibcSinCosfTest, SDCOMP_26094) { |
| for (uint32_t v : SDCOMP26094_VALUES) { |
| float x = float(FPBits((v))); |
| float sin, cos; |
| __llvm_libc::sincosf(x, &sin, &cos); |
| EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, cos, 1.0); |
| EXPECT_MPFR_MATCH(mpfr::Operation::Sin, x, sin, 1.0); |
| } |
| } |