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//===-- Utility class to test fmin[f|l] -------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_TEST_SRC_MATH_FMAXTEST_H
#define LLVM_LIBC_TEST_SRC_MATH_FMAXTEST_H
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
#include "utils/MPFRWrapper/MPFRUtils.h"
#include <math.h>
namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
template <typename T> class FMaxTest : public LIBC_NAMESPACE::testing::Test {
DECLARE_SPECIAL_CONSTANTS(T)
public:
typedef T (*FMaxFunc)(T, T);
void testNaN(FMaxFunc func) {
EXPECT_FP_EQ(inf, func(aNaN, inf));
EXPECT_FP_EQ(neg_inf, func(neg_inf, aNaN));
EXPECT_FP_EQ(0.0, func(aNaN, 0.0));
EXPECT_FP_EQ(-0.0, func(-0.0, aNaN));
EXPECT_FP_EQ(T(-1.2345), func(aNaN, T(-1.2345)));
EXPECT_FP_EQ(T(1.2345), func(T(1.2345), aNaN));
EXPECT_FP_EQ(aNaN, func(aNaN, aNaN));
}
void testInfArg(FMaxFunc func) {
EXPECT_FP_EQ(inf, func(neg_inf, inf));
EXPECT_FP_EQ(inf, func(inf, 0.0));
EXPECT_FP_EQ(inf, func(-0.0, inf));
EXPECT_FP_EQ(inf, func(inf, T(1.2345)));
EXPECT_FP_EQ(inf, func(T(-1.2345), inf));
}
void testNegInfArg(FMaxFunc func) {
EXPECT_FP_EQ(inf, func(inf, neg_inf));
EXPECT_FP_EQ(0.0, func(neg_inf, 0.0));
EXPECT_FP_EQ(-0.0, func(-0.0, neg_inf));
EXPECT_FP_EQ(T(-1.2345), func(neg_inf, T(-1.2345)));
EXPECT_FP_EQ(T(1.2345), func(T(1.2345), neg_inf));
}
void testBothZero(FMaxFunc func) {
EXPECT_FP_EQ(0.0, func(0.0, 0.0));
EXPECT_FP_EQ(0.0, func(-0.0, 0.0));
EXPECT_FP_EQ(0.0, func(0.0, -0.0));
EXPECT_FP_EQ(-0.0, func(-0.0, -0.0));
}
void testRange(FMaxFunc func) {
constexpr StorageType COUNT = 100'001;
constexpr StorageType STEP = STORAGE_MAX / COUNT;
for (StorageType i = 0, v = 0, w = STORAGE_MAX; i <= COUNT;
++i, v += STEP, w -= STEP) {
T x = FPBits(v).get_val(), y = FPBits(w).get_val();
if (isnan(x) || isinf(x))
continue;
if (isnan(y) || isinf(y))
continue;
if ((x == 0) && (y == 0))
continue;
if (x > y) {
EXPECT_FP_EQ(x, func(x, y));
} else {
EXPECT_FP_EQ(y, func(x, y));
}
}
}
};
#define LIST_FMAX_TESTS(T, func) \
using LlvmLibcFMaxTest = FMaxTest<T>; \
TEST_F(LlvmLibcFMaxTest, NaN) { testNaN(&func); } \
TEST_F(LlvmLibcFMaxTest, InfArg) { testInfArg(&func); } \
TEST_F(LlvmLibcFMaxTest, NegInfArg) { testNegInfArg(&func); } \
TEST_F(LlvmLibcFMaxTest, BothZero) { testBothZero(&func); } \
TEST_F(LlvmLibcFMaxTest, Range) { testRange(&func); }
#endif // LLVM_LIBC_TEST_SRC_MATH_FMAXTEST_H
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