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//===-- 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);
}
}