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Tortuga/utils/simple_rng.hpp
T
2014-06-18 01:00:31 +10:00

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/* Copyright: (c) Kayne Ruse 2014
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef SIMPLERNG_HPP_
#define SIMPLERNG_HPP_
class SimpleRNG {
public:
SimpleRNG() { SetSeed(8891); }
SimpleRNG(int x) { SetSeed(x); }
int SetSeed(int s) { return seed = s & 0xFFFF; }
int GetSeed() { return seed; }
int operator()(int x) {
return SetSeed((x + seed) * 11235 + 81321);
};
private:
int seed;
};
#endif