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//===-- Utility class to test different flavors of fdim ---------*- 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
//
//===---------------------------------------------------------------------===//
#include "src/__support/FPUtil/BasicOperations.h"
#include "src/__support/FPUtil/FPBits.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
#include <math.h>
template <typename T>
class FDimTestTemplate : public LIBC_NAMESPACE::testing::Test {
public:
using FuncPtr = T (*)(T, T);
using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
using StorageType = typename FPBits::StorageType;
using Sign = LIBC_NAMESPACE::fputil::Sign;
const T inf = FPBits::inf(Sign::POS).get_val();
const T neg_inf = FPBits::inf(Sign::NEG).get_val();
const T zero = FPBits::zero(Sign::POS).get_val();
const T neg_zero = FPBits::zero(Sign::NEG).get_val();
const T nan = FPBits::quiet_nan().get_val();
void test_na_n_arg(FuncPtr func) {
EXPECT_FP_EQ(nan, func(nan, inf));
EXPECT_FP_EQ(nan, func(neg_inf, nan));
EXPECT_FP_EQ(nan, func(nan, zero));
EXPECT_FP_EQ(nan, func(neg_zero, nan));
EXPECT_FP_EQ(nan, func(nan, T(-1.2345)));
EXPECT_FP_EQ(nan, func(T(1.2345), nan));
EXPECT_FP_EQ(func(nan, nan), nan);
}
void test_inf_arg(FuncPtr func) {
EXPECT_FP_EQ(zero, func(neg_inf, inf));
EXPECT_FP_EQ(inf, func(inf, zero));
EXPECT_FP_EQ(zero, func(neg_zero, inf));
EXPECT_FP_EQ(inf, func(inf, T(1.2345)));
EXPECT_FP_EQ(zero, func(T(-1.2345), inf));
}
void test_neg_inf_arg(FuncPtr func) {
EXPECT_FP_EQ(inf, func(inf, neg_inf));
EXPECT_FP_EQ(zero, func(neg_inf, zero));
EXPECT_FP_EQ(inf, func(neg_zero, neg_inf));
EXPECT_FP_EQ(zero, func(neg_inf, T(-1.2345)));
EXPECT_FP_EQ(inf, func(T(1.2345), neg_inf));
}
void test_both_zero(FuncPtr func) {
EXPECT_FP_EQ(zero, func(zero, zero));
EXPECT_FP_EQ(zero, func(zero, neg_zero));
EXPECT_FP_EQ(zero, func(neg_zero, zero));
EXPECT_FP_EQ(zero, func(neg_zero, neg_zero));
}
void test_in_range(FuncPtr func) {
constexpr StorageType STORAGE_MAX =
LIBC_NAMESPACE::cpp::numeric_limits<StorageType>::max();
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 > y) {
EXPECT_FP_EQ(x - y, func(x, y));
} else {
EXPECT_FP_EQ(zero, func(x, y));
}
}
}
};
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