dawn-cmake/fuzzers/tint_ast_fuzzer/mt_rng.h

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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef FUZZERS_TINT_AST_FUZZER_MT_RNG_H_
#define FUZZERS_TINT_AST_FUZZER_MT_RNG_H_
#include <random>
#include "fuzzers/tint_ast_fuzzer/random_number_generator.h"
namespace tint {
namespace fuzzers {
namespace ast_fuzzer {
/// The random number generator that uses STL's Mersenne Twister (std::mt19937)
/// under the hood.
class MtRng : public RandomNumberGenerator {
public:
/// @brief Initializes this RNG with some `seed`.
/// @param seed - passed down to the `std::mt19937`.
explicit MtRng(uint32_t seed);
uint32_t RandomUint32(uint32_t bound) override;
uint64_t RandomUint64(uint64_t bound) override;
private:
std::mt19937 rng_;
};
} // namespace ast_fuzzer
} // namespace fuzzers
} // namespace tint
#endif // FUZZERS_TINT_AST_FUZZER_MT_RNG_H_