libsidplayfp
1.0.3
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00001 /* 00002 * This file is part of libsidplayfp, a SID player engine. 00003 * 00004 * Copyright 2012-2013 Leandro Nini <drfiemost@users.sourceforge.net> 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2 of the License, or 00009 * (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this program; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #ifndef SIDRANDOM_H 00022 #define SIDRANDOM_H 00023 00027 class sidrandom 00028 { 00029 private: 00030 unsigned int m_seed; 00031 00032 public: 00038 sidrandom(unsigned int seed) : 00039 m_seed(seed * 1103515245 + 12345) {} 00040 00044 unsigned int next() 00045 { 00046 m_seed = m_seed * 13 + 1; 00047 return m_seed; 00048 } 00049 }; 00050 00051 #endif