| //===-- Template to diff single-input-single-output functions ---*- 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_FUZZING_MATH_SINGLE_INPUT_SINGLE_OUTPUT_DIFF_H |
| #define LLVM_LIBC_FUZZING_MATH_SINGLE_INPUT_SINGLE_OUTPUT_DIFF_H |
| |
| #include "fuzzing/math/Compare.h" |
| #include "src/__support/FPUtil/FPBits.h" |
| |
| #include <math.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| template <typename T> using SingleInputSingleOutputFunc = T (*)(T); |
| |
| template <typename T> |
| void SingleInputSingleOutputDiff(SingleInputSingleOutputFunc<T> func1, |
| SingleInputSingleOutputFunc<T> func2, |
| const uint8_t *data, size_t size) { |
| if (size < sizeof(T)) |
| return; |
| |
| T x = *reinterpret_cast<const T *>(data); |
| |
| T result1 = func1(x); |
| T result2 = func2(x); |
| |
| if (!ValuesEqual(result1, result2)) |
| __builtin_trap(); |
| } |
| |
| template <typename T1, typename T2> |
| using SingleInputSingleOutputWithSideEffectFunc = T1 (*)(T1, T2 *); |
| |
| template <typename T1, typename T2> |
| void SingleInputSingleOutputWithSideEffectDiff( |
| SingleInputSingleOutputWithSideEffectFunc<T1, T2> func1, |
| SingleInputSingleOutputWithSideEffectFunc<T1, T2> func2, |
| const uint8_t *data, size_t size) { |
| if (size < sizeof(T1)) |
| return; |
| |
| T1 x = *reinterpret_cast<const T1 *>(data); |
| T2 sideEffect1, sideEffect2; |
| |
| T1 result1 = func1(x, &sideEffect1); |
| T1 result2 = func2(x, &sideEffect2); |
| |
| if (!ValuesEqual(result1, result2)) |
| __builtin_trap(); |
| |
| if (!ValuesEqual(sideEffect1, sideEffect2)) |
| __builtin_trap(); |
| } |
| |
| #endif // LLVM_LIBC_FUZZING_MATH_SINGLE_INPUT_SINGLE_OUTPUT_DIFF_H |