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//===-- Utility class to test fmod special numbers ------------------------===//
//
// 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_FMODTEST_H
#define LLVM_LIBC_TEST_SRC_MATH_FMODTEST_H
#include "hdr/errno_macros.h"
#include "src/__support/FPUtil/FEnvImpl.h"
#include "test/UnitTest/FEnvSafeTest.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
#include "hdr/fenv_macros.h"
#define TEST_SPECIAL(x, y, expected, dom_err, expected_exception) \
LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT); \
EXPECT_FP_EQ(expected, f(x, y)); \
EXPECT_MATH_ERRNO((dom_err) ? EDOM : 0); \
EXPECT_FP_EXCEPTION(expected_exception); \
LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT)
#define TEST_REGULAR(x, y, expected) TEST_SPECIAL(x, y, expected, false, 0)
template <typename T>
class FmodTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
DECLARE_SPECIAL_CONSTANTS(T)
static constexpr T one = T(1.0);
static constexpr T two = T(2.0);
static constexpr T neg_two = T(-2.0);
static constexpr T three = T(3.0);
static constexpr T val_neg_1_1 = T(-1.1);
static constexpr T val_6_5 = T(6.5);
static constexpr T val_neg_6_5 = T(-6.5);
static constexpr T val_2_25 = T(2.25);
static constexpr T val_neg_2_25 = T(-2.25);
public:
typedef T (*FModFunc)(T, T);
void testSpecialNumbers(FModFunc f) {
// fmod (+0, y) == +0 for y != 0.
TEST_SPECIAL(zero, three, zero, false, 0);
TEST_SPECIAL(zero, min_denormal, zero, false, 0);
TEST_SPECIAL(zero, -min_denormal, zero, false, 0);
TEST_SPECIAL(zero, min_normal, zero, false, 0);
TEST_SPECIAL(zero, -min_normal, zero, false, 0);
TEST_SPECIAL(zero, max_normal, zero, false, 0);
TEST_SPECIAL(zero, -max_normal, zero, false, 0);
// fmod (-0, y) == -0 for y != 0.
TEST_SPECIAL(neg_zero, three, neg_zero, false, 0);
TEST_SPECIAL(neg_zero, min_denormal, neg_zero, false, 0);
TEST_SPECIAL(neg_zero, -min_denormal, neg_zero, false, 0);
TEST_SPECIAL(neg_zero, min_normal, neg_zero, false, 0);
TEST_SPECIAL(neg_zero, -min_normal, neg_zero, false, 0);
TEST_SPECIAL(neg_zero, max_normal, neg_zero, false, 0);
TEST_SPECIAL(neg_zero, -max_normal, neg_zero, false, 0);
// fmod (+inf, y) == aNaN plus invalid exception.
TEST_SPECIAL(inf, three, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, val_neg_1_1, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, min_denormal, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, min_normal, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, max_normal, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, inf, aNaN, true, FE_INVALID);
TEST_SPECIAL(inf, neg_inf, aNaN, true, FE_INVALID);
// fmod (-inf, y) == aNaN plus invalid exception.
TEST_SPECIAL(neg_inf, three, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, val_neg_1_1, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, min_denormal, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, min_normal, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, max_normal, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, inf, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_inf, neg_inf, aNaN, true, FE_INVALID);
// fmod (x, +0) == aNaN plus invalid exception.
TEST_SPECIAL(three, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(val_neg_1_1, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(zero, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_zero, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(min_denormal, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(min_normal, zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(max_normal, zero, aNaN, true, FE_INVALID);
// fmod (x, -0) == aNaN plus invalid exception.
TEST_SPECIAL(three, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(val_neg_1_1, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(zero, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(neg_zero, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(min_denormal, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(min_normal, neg_zero, aNaN, true, FE_INVALID);
TEST_SPECIAL(max_normal, neg_zero, aNaN, true, FE_INVALID);
// fmod (x, +inf) == x for x not infinite.
TEST_SPECIAL(zero, inf, zero, false, 0);
TEST_SPECIAL(neg_zero, inf, neg_zero, false, 0);
TEST_SPECIAL(min_denormal, inf, min_denormal, false, 0);
TEST_SPECIAL(min_normal, inf, min_normal, false, 0);
TEST_SPECIAL(max_normal, inf, max_normal, false, 0);
TEST_SPECIAL(three, inf, three, false, 0);
// fmod (x, -inf) == x for x not infinite.
TEST_SPECIAL(zero, neg_inf, zero, false, 0);
TEST_SPECIAL(neg_zero, neg_inf, neg_zero, false, 0);
TEST_SPECIAL(min_denormal, neg_inf, min_denormal, false, 0);
TEST_SPECIAL(min_normal, neg_inf, min_normal, false, 0);
TEST_SPECIAL(max_normal, neg_inf, max_normal, false, 0);
TEST_SPECIAL(three, neg_inf, three, false, 0);
TEST_SPECIAL(zero, aNaN, aNaN, false, 0);
TEST_SPECIAL(zero, neg_aNaN, aNaN, false, 0);
TEST_SPECIAL(neg_zero, aNaN, aNaN, false, 0);
TEST_SPECIAL(neg_zero, neg_aNaN, aNaN, false, 0);
TEST_SPECIAL(one, aNaN, aNaN, false, 0);
TEST_SPECIAL(one, neg_aNaN, aNaN, false, 0);
TEST_SPECIAL(inf, aNaN, aNaN, false, 0);
TEST_SPECIAL(inf, neg_aNaN, aNaN, false, 0);
TEST_SPECIAL(neg_inf, aNaN, aNaN, false, 0);
TEST_SPECIAL(neg_inf, neg_aNaN, aNaN, false, 0);
TEST_SPECIAL(zero, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(zero, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_zero, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_zero, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(one, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(one, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(inf, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(inf, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_inf, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_inf, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(aNaN, zero, aNaN, false, 0);
TEST_SPECIAL(neg_aNaN, zero, aNaN, false, 0);
TEST_SPECIAL(aNaN, neg_zero, aNaN, false, 0);
TEST_SPECIAL(neg_aNaN, neg_zero, aNaN, false, 0);
TEST_SPECIAL(aNaN, one, aNaN, false, 0);
TEST_SPECIAL(neg_aNaN, one, aNaN, false, 0);
TEST_SPECIAL(aNaN, inf, aNaN, false, 0);
TEST_SPECIAL(neg_aNaN, inf, aNaN, false, 0);
TEST_SPECIAL(aNaN, neg_inf, aNaN, false, 0);
TEST_SPECIAL(neg_aNaN, neg_inf, aNaN, false, 0);
TEST_SPECIAL(sNaN, zero, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, zero, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, neg_zero, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, neg_zero, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, one, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, one, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, inf, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, inf, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, neg_inf, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, neg_inf, aNaN, false, FE_INVALID);
TEST_SPECIAL(aNaN, aNaN, aNaN, false, 0);
TEST_SPECIAL(aNaN, neg_aNaN, aNaN, false, 0);
TEST_SPECIAL(neg_aNaN, aNaN, aNaN, false, 0);
TEST_SPECIAL(neg_aNaN, neg_aNaN, aNaN, false, 0);
TEST_SPECIAL(aNaN, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(aNaN, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_aNaN, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_aNaN, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, aNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, neg_aNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, aNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, neg_aNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(sNaN, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(neg_sNaN, neg_sNaN, aNaN, false, FE_INVALID);
TEST_SPECIAL(val_6_5, val_2_25, two, false, 0);
TEST_SPECIAL(val_neg_6_5, val_2_25, neg_two, false, 0);
TEST_SPECIAL(val_6_5, val_neg_2_25, two, false, 0);
TEST_SPECIAL(val_neg_6_5, val_neg_2_25, neg_two, false, 0);
TEST_SPECIAL(max_normal, max_normal, zero, false, 0);
TEST_SPECIAL(max_normal, -max_normal, zero, false, 0);
TEST_SPECIAL(max_normal, min_normal, zero, false, 0);
TEST_SPECIAL(max_normal, -min_normal, zero, false, 0);
TEST_SPECIAL(max_normal, min_denormal, zero, false, 0);
TEST_SPECIAL(max_normal, -min_denormal, zero, false, 0);
TEST_SPECIAL(-max_normal, max_normal, neg_zero, false, 0);
TEST_SPECIAL(-max_normal, -max_normal, neg_zero, false, 0);
TEST_SPECIAL(-max_normal, min_normal, neg_zero, false, 0);
TEST_SPECIAL(-max_normal, -min_normal, neg_zero, false, 0);
TEST_SPECIAL(-max_normal, min_denormal, neg_zero, false, 0);
TEST_SPECIAL(-max_normal, -min_denormal, neg_zero, false, 0);
TEST_SPECIAL(min_normal, max_normal, min_normal, false, 0);
TEST_SPECIAL(min_normal, -max_normal, min_normal, false, 0);
TEST_SPECIAL(min_normal, min_normal, zero, false, 0);
TEST_SPECIAL(min_normal, -min_normal, zero, false, 0);
TEST_SPECIAL(min_normal, min_denormal, zero, false, 0);
TEST_SPECIAL(min_normal, -min_denormal, zero, false, 0);
TEST_SPECIAL(-min_normal, max_normal, -min_normal, false, 0);
TEST_SPECIAL(-min_normal, -max_normal, -min_normal, false, 0);
TEST_SPECIAL(-min_normal, min_normal, neg_zero, false, 0);
TEST_SPECIAL(-min_normal, -min_normal, neg_zero, false, 0);
TEST_SPECIAL(-min_normal, min_denormal, neg_zero, false, 0);
TEST_SPECIAL(-min_normal, -min_denormal, neg_zero, false, 0);
TEST_SPECIAL(min_denormal, max_normal, min_denormal, false, 0);
TEST_SPECIAL(min_denormal, -max_normal, min_denormal, false, 0);
TEST_SPECIAL(min_denormal, min_normal, min_denormal, false, 0);
TEST_SPECIAL(min_denormal, -min_normal, min_denormal, false, 0);
TEST_SPECIAL(min_denormal, min_denormal, zero, false, 0);
TEST_SPECIAL(min_denormal, -min_denormal, zero, false, 0);
TEST_SPECIAL(-min_denormal, max_normal, -min_denormal, false, 0);
TEST_SPECIAL(-min_denormal, -max_normal, -min_denormal, false, 0);
TEST_SPECIAL(-min_denormal, min_normal, -min_denormal, false, 0);
TEST_SPECIAL(-min_denormal, -min_normal, -min_denormal, false, 0);
TEST_SPECIAL(-min_denormal, min_denormal, neg_zero, false, 0);
TEST_SPECIAL(-min_denormal, -min_denormal, neg_zero, false, 0);
}
void testRegularExtreme(FModFunc f) {
if constexpr (sizeof(T) < sizeof(float))
return;
TEST_REGULAR(T(0x1p127), T(0x3p-149), T(0x1p-149));
TEST_REGULAR(T(0x1p127), T(-0x3p-149), T(0x1p-149));
TEST_REGULAR(T(0x1p127), T(0x3p-148), T(0x1p-147));
TEST_REGULAR(T(0x1p127), T(-0x3p-148), T(0x1p-147));
TEST_REGULAR(T(0x1p127), T(0x3p-126), T(0x1p-125));
TEST_REGULAR(T(0x1p127), T(-0x3p-126), T(0x1p-125));
TEST_REGULAR(T(-0x1p127), T(0x3p-149), T(-0x1p-149));
TEST_REGULAR(T(-0x1p127), T(-0x3p-149), T(-0x1p-149));
TEST_REGULAR(T(-0x1p127), T(0x3p-148), T(-0x1p-147));
TEST_REGULAR(T(-0x1p127), T(-0x3p-148), T(-0x1p-147));
TEST_REGULAR(T(-0x1p127), T(0x3p-126), T(-0x1p-125));
TEST_REGULAR(T(-0x1p127), T(-0x3p-126), T(-0x1p-125));
if constexpr (sizeof(T) < sizeof(double))
return;
TEST_REGULAR(T(0x1p1023), T(0x3p-1074), T(0x1p-1073));
TEST_REGULAR(T(0x1p1023), T(-0x3p-1074), T(0x1p-1073));
TEST_REGULAR(T(0x1p1023), T(0x3p-1073), T(0x1p-1073));
TEST_REGULAR(T(0x1p1023), T(-0x3p-1073), T(0x1p-1073));
TEST_REGULAR(T(0x1p1023), T(0x3p-1022), T(0x1p-1021));
TEST_REGULAR(T(0x1p1023), T(-0x3p-1022), T(0x1p-1021));
TEST_REGULAR(T(-0x1p1023), T(0x3p-1074), T(-0x1p-1073));
TEST_REGULAR(T(-0x1p1023), T(-0x3p-1074), T(-0x1p-1073));
TEST_REGULAR(T(-0x1p1023), T(0x3p-1073), T(-0x1p-1073));
TEST_REGULAR(T(-0x1p1023), T(-0x3p-1073), T(-0x1p-1073));
TEST_REGULAR(T(-0x1p1023), T(0x3p-1022), T(-0x1p-1021));
TEST_REGULAR(T(-0x1p1023), T(-0x3p-1022), T(-0x1p-1021));
}
};
#define LIST_FMOD_TESTS(T, func) \
using LlvmLibcFmodTest = FmodTest<T>; \
TEST_F(LlvmLibcFmodTest, SpecialNumbers) { testSpecialNumbers(&func); } \
TEST_F(LlvmLibcFmodTest, RegularExtreme) { testRegularExtreme(&func); }
#endif // LLVM_LIBC_TEST_SRC_MATH_FMODTEST_H
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