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//===-- MPFRUtils.h ---------------------------------------------*- 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_UTILS_TESTUTILS_MPFRUTILS_H
#define LLVM_LIBC_UTILS_TESTUTILS_MPFRUTILS_H
#include "utils/CPP/TypeTraits.h"
#include "utils/UnitTest/Test.h"
#include <stdint.h>
namespace __llvm_libc {
namespace testing {
namespace mpfr {
enum class Operation : int {
// Operations with take a single floating point number as input
// and produce a single floating point number as output. The input
// and output floating point numbers are of the same kind.
BeginUnaryOperationsSingleOutput,
Abs,
Ceil,
Cos,
Exp,
Exp2,
Expm1,
Floor,
Round,
Sin,
Sqrt,
Tan,
Trunc,
EndUnaryOperationsSingleOutput,
// Operations which take a single floating point nubmer as input
// but produce two outputs. The first ouput is a floating point
// number of the same type as the input. The second output is of type
// 'int'.
BeginUnaryOperationsTwoOutputs,
Frexp, // Floating point output, the first output, is the fractional part.
EndUnaryOperationsTwoOutputs,
// Operations wich take two floating point nubmers of the same type as
// input and produce a single floating point number of the same type as
// output.
BeginBinaryOperationsSingleOutput,
Hypot,
EndBinaryOperationsSingleOutput,
// Operations which take two floating point numbers of the same type as
// input and produce two outputs. The first output is a floating nubmer of
// the same type as the inputs. The second output is af type 'int'.
BeginBinaryOperationsTwoOutputs,
RemQuo, // The first output, the floating point output, is the remainder.
EndBinaryOperationsTwoOutputs,
// Operations which take three floating point nubmers of the same type as
// input and produce a single floating point number of the same type as
// output.
BeginTernaryOperationsSingleOuput,
Fma,
EndTernaryOperationsSingleOutput,
};
template <typename T> struct BinaryInput {
static_assert(
__llvm_libc::cpp::IsFloatingPointType<T>::Value,
"Template parameter of BinaryInput must be a floating point type.");
using Type = T;
T x, y;
};
template <typename T> struct TernaryInput {
static_assert(
__llvm_libc::cpp::IsFloatingPointType<T>::Value,
"Template parameter of TernaryInput must be a floating point type.");
using Type = T;
T x, y, z;
};
template <typename T> struct BinaryOutput {
T f;
int i;
};
namespace internal {
template <typename T1, typename T2>
struct AreMatchingBinaryInputAndBinaryOutput {
static constexpr bool value = false;
};
template <typename T>
struct AreMatchingBinaryInputAndBinaryOutput<BinaryInput<T>, BinaryOutput<T>> {
static constexpr bool value = cpp::IsFloatingPointType<T>::Value;
};
template <typename T>
bool compareUnaryOperationSingleOutput(Operation op, T input, T libcOutput,
double t);
template <typename T>
bool compareUnaryOperationTwoOutputs(Operation op, T input,
const BinaryOutput<T> &libcOutput,
double t);
template <typename T>
bool compareBinaryOperationTwoOutputs(Operation op, const BinaryInput<T> &input,
const BinaryOutput<T> &libcOutput,
double t);
template <typename T>
bool compareBinaryOperationOneOutput(Operation op, const BinaryInput<T> &input,
T libcOutput, double t);
template <typename T>
bool compareTernaryOperationOneOutput(Operation op,
const TernaryInput<T> &input,
T libcOutput, double t);
template <typename T>
void explainUnaryOperationSingleOutputError(Operation op, T input, T matchValue,
testutils::StreamWrapper &OS);
template <typename T>
void explainUnaryOperationTwoOutputsError(Operation op, T input,
const BinaryOutput<T> &matchValue,
testutils::StreamWrapper &OS);
template <typename T>
void explainBinaryOperationTwoOutputsError(Operation op,
const BinaryInput<T> &input,
const BinaryOutput<T> &matchValue,
testutils::StreamWrapper &OS);
template <typename T>
void explainBinaryOperationOneOutputError(Operation op,
const BinaryInput<T> &input,
T matchValue,
testutils::StreamWrapper &OS);
template <typename T>
void explainTernaryOperationOneOutputError(Operation op,
const TernaryInput<T> &input,
T matchValue,
testutils::StreamWrapper &OS);
template <Operation op, typename InputType, typename OutputType>
class MPFRMatcher : public testing::Matcher<OutputType> {
InputType input;
OutputType matchValue;
double ulpTolerance;
public:
MPFRMatcher(InputType testInput, double ulpTolerance)
: input(testInput), ulpTolerance(ulpTolerance) {}
bool match(OutputType libcResult) {
matchValue = libcResult;
return match(input, matchValue, ulpTolerance);
}
void explainError(testutils::StreamWrapper &OS) override {
explainError(input, matchValue, OS);
}
private:
template <typename T> static bool match(T in, T out, double tolerance) {
return compareUnaryOperationSingleOutput(op, in, out, tolerance);
}
template <typename T>
static bool match(T in, const BinaryOutput<T> &out, double tolerance) {
return compareUnaryOperationTwoOutputs(op, in, out, tolerance);
}
template <typename T>
static bool match(const BinaryInput<T> &in, T out, double tolerance) {
return compareBinaryOperationOneOutput(op, in, out, tolerance);
}
template <typename T>
static bool match(BinaryInput<T> in, const BinaryOutput<T> &out,
double tolerance) {
return compareBinaryOperationTwoOutputs(op, in, out, tolerance);
}
template <typename T>
static bool match(const TernaryInput<T> &in, T out, double tolerance) {
return compareTernaryOperationOneOutput(op, in, out, tolerance);
}
template <typename T>
static void explainError(T in, T out, testutils::StreamWrapper &OS) {
explainUnaryOperationSingleOutputError(op, in, out, OS);
}
template <typename T>
static void explainError(T in, const BinaryOutput<T> &out,
testutils::StreamWrapper &OS) {
explainUnaryOperationTwoOutputsError(op, in, out, OS);
}
template <typename T>
static void explainError(const BinaryInput<T> &in, const BinaryOutput<T> &out,
testutils::StreamWrapper &OS) {
explainBinaryOperationTwoOutputsError(op, in, out, OS);
}
template <typename T>
static void explainError(const BinaryInput<T> &in, T out,
testutils::StreamWrapper &OS) {
explainBinaryOperationOneOutputError(op, in, out, OS);
}
template <typename T>
static void explainError(const TernaryInput<T> &in, T out,
testutils::StreamWrapper &OS) {
explainTernaryOperationOneOutputError(op, in, out, OS);
}
};
} // namespace internal
// Return true if the input and ouput types for the operation op are valid
// types.
template <Operation op, typename InputType, typename OutputType>
constexpr bool isValidOperation() {
return (Operation::BeginUnaryOperationsSingleOutput < op &&
op < Operation::EndUnaryOperationsSingleOutput &&
cpp::IsSame<InputType, OutputType>::Value &&
cpp::IsFloatingPointType<InputType>::Value) ||
(Operation::BeginUnaryOperationsTwoOutputs < op &&
op < Operation::EndUnaryOperationsTwoOutputs &&
cpp::IsFloatingPointType<InputType>::Value &&
cpp::IsSame<OutputType, BinaryOutput<InputType>>::Value) ||
(Operation::BeginBinaryOperationsSingleOutput < op &&
op < Operation::EndBinaryOperationsSingleOutput &&
cpp::IsFloatingPointType<OutputType>::Value &&
cpp::IsSame<InputType, BinaryInput<OutputType>>::Value) ||
(Operation::BeginBinaryOperationsTwoOutputs < op &&
op < Operation::EndBinaryOperationsTwoOutputs &&
internal::AreMatchingBinaryInputAndBinaryOutput<InputType,
OutputType>::value) ||
(Operation::BeginTernaryOperationsSingleOuput < op &&
op < Operation::EndTernaryOperationsSingleOutput &&
cpp::IsFloatingPointType<OutputType>::Value &&
cpp::IsSame<InputType, TernaryInput<OutputType>>::Value);
}
template <Operation op, typename InputType, typename OutputType>
__attribute__((no_sanitize("address")))
cpp::EnableIfType<isValidOperation<op, InputType, OutputType>(),
internal::MPFRMatcher<op, InputType, OutputType>>
getMPFRMatcher(InputType input, OutputType outputUnused, double t) {
return internal::MPFRMatcher<op, InputType, OutputType>(input, t);
}
enum class RoundingMode : uint8_t { Upward, Downward, TowardZero, Nearest };
template <typename T> T Round(T x, RoundingMode mode);
template <typename T> bool RoundToLong(T x, long &result);
template <typename T> bool RoundToLong(T x, RoundingMode mode, long &result);
} // namespace mpfr
} // namespace testing
} // namespace __llvm_libc
#define EXPECT_MPFR_MATCH(op, input, matchValue, tolerance) \
EXPECT_THAT(matchValue, __llvm_libc::testing::mpfr::getMPFRMatcher<op>( \
input, matchValue, tolerance))
#define ASSERT_MPFR_MATCH(op, input, matchValue, tolerance) \
ASSERT_THAT(matchValue, __llvm_libc::testing::mpfr::getMPFRMatcher<op>( \
input, matchValue, tolerance))
#endif // LLVM_LIBC_UTILS_TESTUTILS_MPFRUTILS_H
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