Danny Robson
f6056153e3
This places, at long last, the core library code into the same namespace as the extended library code.
38 lines
957 B
C++
38 lines
957 B
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2015-2016 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_RAND_XORSHIFT_HPP
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#define __UTIL_RAND_XORSHIFT_HPP
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namespace cruft::rand {
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// implements a naive xorshift random generator.
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//
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// * does not comply with the c++11 rng class requirements
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// * users may not rely on identical output across executions or library
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// updates. internal constants may change across releases
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template <typename T>
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struct xorshift {
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public:
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using result_type = T;
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explicit xorshift (T seed);
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result_type operator() (void);
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static result_type min (void);
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static result_type max (void);
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void discard (unsigned);
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private:
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T m_state;
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};
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}
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#endif
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