| //===- FuzzerRandom.h - Internal header for the Fuzzer ----------*- C++ -* ===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // fuzzer::Random |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_FUZZER_RANDOM_H |
| #define LLVM_FUZZER_RANDOM_H |
| |
| #include <random> |
| |
| namespace fuzzer { |
| class Random : public std::mt19937 { |
| public: |
| Random(unsigned int seed) : std::mt19937(seed) {} |
| result_type operator()() { return this->std::mt19937::operator()(); } |
| size_t Rand() { return this->operator()(); } |
| size_t RandBool() { return Rand() % 2; } |
| size_t operator()(size_t n) { return n ? Rand() % n : 0; } |
| intptr_t operator()(intptr_t From, intptr_t To) { |
| assert(From < To); |
| intptr_t RangeSize = To - From + 1; |
| return operator()(RangeSize) + From; |
| } |
| }; |
| |
| } // namespace fuzzer |
| |
| #endif // LLVM_FUZZER_RANDOM_H |
