37 lines
1 KiB
C
37 lines
1 KiB
C
|
//===- 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:
|
||
|
|
Random(unsigned int seed) : R(seed) {}
|
||
|
|
size_t Rand() { return R(); }
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
std::mt19937 &Get_mt19937() { return R; }
|
||
|
|
private:
|
||
|
|
std::mt19937 R;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace fuzzer
|
||
|
|
|
||
|
|
#endif // LLVM_FUZZER_RANDOM_H
|