| //===-- Unittests for cos -------------------------------------------------===// |
| // |
| // 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/math/cos.h" |
| #include "utils/MPFRWrapper/MPFRUtils.h" |
| #include "utils/UnitTest/FPMatcher.h" |
| #include "utils/UnitTest/Test.h" |
| |
| #include <math.h> |
| |
| namespace mpfr = __llvm_libc::testing::mpfr; |
| |
| DECLARE_SPECIAL_CONSTANTS(double) |
| |
| TEST(LlvmLibccosTest, Range) { |
| static constexpr double _2pi = 6.283185307179586; |
| constexpr UIntType count = 10000000; |
| constexpr UIntType step = UIntType(-1) / count; |
| for (UIntType i = 0, v = 0; i <= count; ++i, v += step) { |
| double x = double(FPBits(v)); |
| // TODO: Expand the range of testing after range reduction is implemented. |
| if (isnan(x) || isinf(x) || x > _2pi || x < -_2pi) |
| continue; |
| |
| ASSERT_MPFR_MATCH(mpfr::Operation::Cos, x, __llvm_libc::cos(x), 1.0); |
| } |
| } |