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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_LIBC_FUZZING_MATH_TWO_INPUT_SINGLE_OUTPUT_DIFF_H 10 #define LLVM_LIBC_FUZZING_MATH_TWO_INPUT_SINGLE_OUTPUT_DIFF_H 11 12 #include "fuzzing/math/Compare.h" 13 #include "utils/FPUtil/FPBits.h" 14 15 #include <math.h> 16 #include <stddef.h> 17 #include <stdint.h> RemQuoDiff(RemQuoFunc<T> func1,RemQuoFunc<T> func2,const uint8_t * data,size_t size)18 19 template <typename T1, typename T2> 20 using TwoInputSingleOutputFunc = T1 (*)(T1, T2); 21 22 template <typename T1, typename T2> 23 void TwoInputSingleOutputDiff(TwoInputSingleOutputFunc<T1, T2> func1, 24 TwoInputSingleOutputFunc<T1, T2> func2, 25 const uint8_t *data, size_t size) { 26 constexpr size_t t1Size = sizeof(T1); 27 if (size < t1Size + sizeof(T2)) 28 return; 29 30 T1 x = *reinterpret_cast<const T1 *>(data); 31 T2 y = *reinterpret_cast<const T2 *>(data + t1Size); 32 33 T1 result1 = func1(x, y); 34 T1 result2 = func2(x, y); 35 36 if (!ValuesEqual(result1, result2)) 37 __builtin_trap(); 38 } 39 40 #endif // LLVM_LIBC_FUZZING_MATH_TWO_INPUT_SINGLE_OUTPUT_DIFF_H 41