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//===-- Unittests for remquof ---------------------------------------------===//
//
// 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/remquof.h"
#include "utils/FPUtil/BasicOperations.h"
#include "utils/FPUtil/FPBits.h"
#include "utils/FPUtil/TestHelpers.h"
#include "utils/MPFRWrapper/MPFRUtils.h"
#include "utils/UnitTest/Test.h"
#include <math.h>
using FPBits = __llvm_libc::fputil::FPBits<float>;
using UIntType = FPBits::UIntType;
namespace mpfr = __llvm_libc::testing::mpfr;
DECLARE_SPECIAL_CONSTANTS(float)
TEST(RemquofTest, SpecialNumbers) {
int exponent;
float x, y;
y = 1.0f;
x = inf;
EXPECT_NE(isnan(__llvm_libc::remquof(x, y, &exponent)), 0);
x = negInf;
EXPECT_NE(isnan(__llvm_libc::remquof(x, y, &exponent)), 0);
x = 1.0f;
y = zero;
EXPECT_NE(isnan(__llvm_libc::remquof(x, y, &exponent)), 0);
y = negZero;
EXPECT_NE(isnan(__llvm_libc::remquof(x, y, &exponent)), 0);
y = nan;
x = 1.0f;
EXPECT_NE(isnan(__llvm_libc::remquof(x, y, &exponent)), 0);
y = 1.0f;
x = nan;
EXPECT_NE(isnan(__llvm_libc::remquof(x, y, &exponent)), 0);
x = nan;
y = nan;
EXPECT_NE(isnan(__llvm_libc::remquof(x, y, &exponent)), 0);
x = zero;
y = 1.0f;
EXPECT_FP_EQ(__llvm_libc::remquof(x, y, &exponent), zero);
x = negZero;
y = 1.0f;
EXPECT_FP_EQ(__llvm_libc::remquof(x, y, &exponent), negZero);
}
TEST(RemquofTest, SubnormalRange) {
constexpr UIntType count = 1000001;
constexpr UIntType step =
(FPBits::maxSubnormal - FPBits::minSubnormal) / count;
for (UIntType v = FPBits::minSubnormal, w = FPBits::maxSubnormal;
v <= FPBits::maxSubnormal && w >= FPBits::minSubnormal;
v += step, w -= step) {
float x = FPBits(v), y = FPBits(w);
mpfr::BinaryOutput<float> result;
mpfr::BinaryInput<float> input{x, y};
result.f = __llvm_libc::remquof(x, y, &result.i);
ASSERT_MPFR_MATCH(mpfr::Operation::RemQuo, input, result, 0.0);
}
}
TEST(RemquofTest, NormalRange) {
constexpr UIntType count = 1000001;
constexpr UIntType step = (FPBits::maxNormal - FPBits::minNormal) / count;
for (UIntType v = FPBits::minNormal, w = FPBits::maxNormal;
v <= FPBits::maxNormal && w >= FPBits::minNormal; v += step, w -= step) {
float x = FPBits(v), y = FPBits(w);
mpfr::BinaryOutput<float> result;
mpfr::BinaryInput<float> input{x, y};
result.f = __llvm_libc::remquof(x, y, &result.i);
ASSERT_MPFR_MATCH(mpfr::Operation::RemQuo, input, result, 0.0);
}
}
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