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1//===-- Template to diff two-input-single-output functions ------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_LIBC_FUZZING_MATH_TWO_INPUT_SINGLE_OUTPUT_DIFF_H10#define LLVM_LIBC_FUZZING_MATH_TWO_INPUT_SINGLE_OUTPUT_DIFF_H11 12#include "fuzzing/math/Compare.h"13 14#include <stddef.h>15#include <stdint.h>16 17template <typename T1, typename T2>18using TwoInputSingleOutputFunc = T1 (*)(T1, T2);19 20template <typename T1, typename T2>21void TwoInputSingleOutputDiff(TwoInputSingleOutputFunc<T1, T2> func1,22 TwoInputSingleOutputFunc<T1, T2> func2,23 const uint8_t *data, size_t size) {24 constexpr size_t t1Size = sizeof(T1);25 if (size < t1Size + sizeof(T2))26 return;27 28 T1 x = *reinterpret_cast<const T1 *>(data);29 T2 y = *reinterpret_cast<const T2 *>(data + t1Size);30 31 T1 result1 = func1(x, y);32 T1 result2 = func2(x, y);33 34 if (!ValuesEqual(result1, result2))35 __builtin_trap();36}37 38#endif // LLVM_LIBC_FUZZING_MATH_TWO_INPUT_SINGLE_OUTPUT_DIFF_H39