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37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
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//===- FuzzerRandom.h - Internal header for the Fuzzer ----------*- C++ -* ===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// fuzzer::Random
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_FUZZER_RANDOM_H
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#define LLVM_FUZZER_RANDOM_H
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#include <random>
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namespace fuzzer {
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class Random {
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public:
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Random(unsigned int seed) : R(seed) {}
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size_t Rand() { return R(); }
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size_t RandBool() { return Rand() % 2; }
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size_t operator()(size_t n) { return n ? Rand() % n : 0; }
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intptr_t operator()(intptr_t From, intptr_t To) {
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assert(From < To);
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intptr_t RangeSize = To - From + 1;
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return operator()(RangeSize) + From;
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}
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std::mt19937 &Get_mt19937() { return R; }
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private:
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std::mt19937 R;
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};
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} // namespace fuzzer
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#endif // LLVM_FUZZER_RANDOM_H
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