48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/*
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* Copyright © 2019 Dynare Team
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*
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* This file is part of Dynare.
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*
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* Dynare is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Dynare is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Dynare. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "seed_generator.hh"
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#include <limits>
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#include <mutex>
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namespace seed_generator
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{
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std::mutex mut;
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std::mt19937 rng;
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std::uniform_int_distribution<std::mt19937::result_type> seed_generator(std::numeric_limits<std::mt19937::result_type>::min(),
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std::numeric_limits<std::mt19937::result_type>::max());
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std::mt19937::result_type
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get_new_seed()
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{
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std::lock_guard<std::mutex> lk{mut};
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return seed_generator(rng);
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}
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void
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set_meta_seed(std::mt19937::result_type s)
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{
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std::lock_guard<std::mutex> lk{mut};
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rng.seed(s);
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}
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};
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