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//===-- Utility class to test different flavors of float add ----*- 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_ADDTEST_H
#define LLVM_LIBC_TEST_SRC_MATH_ADDTEST_H
#include "src/__support/CPP/algorithm.h"
#include "test/UnitTest/FEnvSafeTest.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
#include "utils/MPFRWrapper/MPFRUtils.h"
namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
template <typename OutType, typename InType>
class AddTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
struct InConstants {
DECLARE_SPECIAL_CONSTANTS(InType)
};
using InFPBits = typename InConstants::FPBits;
using InStorageType = typename InConstants::StorageType;
static constexpr InStorageType IN_MAX_NORMAL_U =
InFPBits::max_normal().uintval();
static constexpr InStorageType IN_MIN_NORMAL_U =
InFPBits::min_normal().uintval();
static constexpr InStorageType IN_MAX_SUBNORMAL_U =
InFPBits::max_subnormal().uintval();
static constexpr InStorageType IN_MIN_SUBNORMAL_U =
InFPBits::min_subnormal().uintval();
public:
using AddFunc = OutType (*)(InType, InType);
void test_subnormal_range(AddFunc func) {
constexpr int COUNT = 100'001;
constexpr InStorageType STEP = LIBC_NAMESPACE::cpp::max(
static_cast<InStorageType>((IN_MAX_SUBNORMAL_U - IN_MIN_SUBNORMAL_U) /
COUNT),
InStorageType(1));
for (InStorageType i = IN_MIN_SUBNORMAL_U; i <= IN_MAX_SUBNORMAL_U;
i += STEP) {
InType x = InFPBits(i).get_val();
InType y = InFPBits(static_cast<InStorageType>(IN_MAX_SUBNORMAL_U - i))
.get_val();
mpfr::BinaryInput<InType> input{x, y};
EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Add, input, func(x, y),
0.5);
}
}
void test_normal_range(AddFunc func) {
constexpr int COUNT = 100'001;
constexpr InStorageType STEP = LIBC_NAMESPACE::cpp::max(
static_cast<InStorageType>((IN_MAX_NORMAL_U - IN_MIN_NORMAL_U) / COUNT),
InStorageType(1));
for (InStorageType i = IN_MIN_NORMAL_U; i <= IN_MAX_NORMAL_U; i += STEP) {
InType x = InFPBits(i).get_val();
InType y =
InFPBits(static_cast<InStorageType>(IN_MAX_NORMAL_U - i)).get_val();
mpfr::BinaryInput<InType> input{x, y};
EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Add, input, func(x, y),
0.5);
}
}
};
#define LIST_ADD_TESTS(OutType, InType, func) \
using LlvmLibcAddTest = AddTest<OutType, InType>; \
TEST_F(LlvmLibcAddTest, SubnormalRange) { test_subnormal_range(&func); } \
TEST_F(LlvmLibcAddTest, NormalRange) { test_normal_range(&func); }
#define LIST_ADD_SAME_TYPE_TESTS(suffix, OutType, InType, func) \
using LlvmLibcAddTest##suffix = AddTest<OutType, InType>; \
TEST_F(LlvmLibcAddTest##suffix, SubnormalRange) { \
test_subnormal_range(&func); \
} \
TEST_F(LlvmLibcAddTest##suffix, NormalRange) { test_normal_range(&func); }
#endif // LLVM_LIBC_TEST_SRC_MATH_ADDTEST_H
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