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//===- 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
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