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//===-- Utility class to test different flavors of float sub ----*- 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_SMOKE_SUBTEST_H
#define LLVM_LIBC_TEST_SRC_MATH_SMOKE_SUBTEST_H
#include "hdr/errno_macros.h"
#include "hdr/fenv_macros.h"
#include "src/__support/macros/properties/os.h"
#include "test/UnitTest/FEnvSafeTest.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
using LIBC_NAMESPACE::Sign;
template <typename OutType, typename InType>
class SubTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
DECLARE_SPECIAL_CONSTANTS(OutType)
struct InConstants {
DECLARE_SPECIAL_CONSTANTS(InType)
};
using InFPBits = typename InConstants::FPBits;
using InStorageType = typename InConstants::StorageType;
InConstants in;
public:
using SubFunc = OutType (*)(InType, InType);
void test_special_numbers(SubFunc func) {
EXPECT_FP_IS_NAN(func(in.aNaN, in.aNaN));
EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(in.sNaN, in.sNaN), FE_INVALID);
InType qnan_42 = InFPBits::quiet_nan(Sign::POS, 0x42).get_val();
EXPECT_FP_IS_NAN(func(qnan_42, in.zero));
EXPECT_FP_IS_NAN(func(in.zero, qnan_42));
EXPECT_FP_EQ(inf, func(in.inf, in.zero));
EXPECT_FP_EQ(neg_inf, func(in.neg_inf, in.zero));
EXPECT_FP_EQ(inf, func(in.inf, in.neg_zero));
EXPECT_FP_EQ(neg_inf, func(in.neg_inf, in.neg_zero));
EXPECT_FP_EQ(neg_inf, func(in.zero, in.inf));
EXPECT_FP_EQ(neg_inf, func(in.neg_zero, in.inf));
EXPECT_FP_EQ(inf, func(in.zero, in.neg_inf));
EXPECT_FP_EQ(inf, func(in.neg_zero, in.neg_inf));
}
void test_invalid_operations(SubFunc func) {
EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(in.inf, in.inf), FE_INVALID);
EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(in.neg_inf, in.neg_inf), FE_INVALID);
}
void test_range_errors(SubFunc func) {
#ifndef LIBC_TARGET_OS_IS_WINDOWS
using namespace LIBC_NAMESPACE::fputil::testing;
if (LIBC_NAMESPACE::fputil::get_fp_type<OutType>() ==
LIBC_NAMESPACE::fputil::get_fp_type<InType>())
return;
if (ForceRoundingMode r(RoundingMode::Nearest); r.success) {
EXPECT_FP_EQ_WITH_EXCEPTION(inf, func(in.max_normal, in.neg_max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(-inf, func(in.neg_max_normal, in.max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(zero,
func(in.min_denormal, in.neg_min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(neg_zero,
func(in.neg_min_denormal, in.min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
}
if (ForceRoundingMode r(RoundingMode::TowardZero); r.success) {
EXPECT_FP_EQ_WITH_EXCEPTION(max_normal,
func(in.max_normal, in.neg_max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(neg_max_normal,
func(in.neg_max_normal, in.max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(zero,
func(in.min_denormal, in.neg_min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(neg_zero,
func(in.neg_min_denormal, in.min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
}
if (ForceRoundingMode r(RoundingMode::Downward); r.success) {
EXPECT_FP_EQ_WITH_EXCEPTION(max_normal,
func(in.max_normal, in.neg_max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(-inf, func(in.neg_max_normal, in.max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(zero,
func(in.min_denormal, in.neg_min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(neg_min_denormal,
func(in.neg_min_denormal, in.min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
}
if (ForceRoundingMode r(RoundingMode::Upward); r.success) {
EXPECT_FP_EQ_WITH_EXCEPTION(inf, func(in.max_normal, in.neg_max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(neg_max_normal,
func(in.neg_max_normal, in.max_normal),
FE_OVERFLOW | FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(min_denormal,
func(in.min_denormal, in.neg_min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(neg_zero,
func(in.neg_min_denormal, in.min_denormal),
FE_UNDERFLOW | FE_INEXACT);
EXPECT_MATH_ERRNO(ERANGE);
}
#endif
}
void test_inexact_results(SubFunc func) {
func(InType(1.0), in.min_denormal);
EXPECT_FP_EXCEPTION(FE_INEXACT);
}
};
#define LIST_SUB_TESTS(OutType, InType, func) \
using LlvmLibcSubTest = SubTest<OutType, InType>; \
TEST_F(LlvmLibcSubTest, SpecialNumbers) { test_special_numbers(&func); } \
TEST_F(LlvmLibcSubTest, InvalidOperations) { \
test_invalid_operations(&func); \
} \
TEST_F(LlvmLibcSubTest, RangeErrors) { test_range_errors(&func); } \
TEST_F(LlvmLibcSubTest, InexactResults) { test_inexact_results(&func); }
#define LIST_SUB_SAME_TYPE_TESTS(suffix, OutType, InType, func) \
using LlvmLibcSubTest##suffix = SubTest<OutType, InType>; \
TEST_F(LlvmLibcSubTest##suffix, SpecialNumbers) { \
test_special_numbers(&func); \
} \
TEST_F(LlvmLibcSubTest##suffix, InvalidOperations) { \
test_invalid_operations(&func); \
} \
TEST_F(LlvmLibcSubTest##suffix, RangeErrors) { test_range_errors(&func); } \
TEST_F(LlvmLibcSubTest##suffix, InexactResults) { \
test_inexact_results(&func); \
}
#endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_SUBTEST_H
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