random.h

   1 /*
   2 OOPoker
   3
   4 Copyright (c) 2010 Lode Vandevenne
   5 All rights reserved.
   6
   7 This file is part of OOPoker.
   8
   9 OOPoker is free software: you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation, either version 3 of the License, or
  12 (at your option) any later version.
  13
  14 OOPoker is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with OOPoker.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #pragma once
  24
  25 //these methods use the true-random facilities provided by the operating system (non blocking, so not necessarily every returned value is true random!)
  26 //it uses SystemFunction036 on Windows, /dev/urandom on Linux.
  27 unsigned int getRandomUint();
  28 double getRandom(); //returns random double in range 0.0-1.0
  29 int getRandom(int low, int high); //returns random in the given range. high is included.
  30
  31 //much faster than the true-random functions above, but only pseudo-random.
  32 unsigned int getRandomUintFast();
  33 double getRandomFast(); //returns random double in range 0.0-1.0
  34 int getRandomFast(int low, int high); //returns random in the given range. high is included.
  35
  36 void seedRandomFast(unsigned int seed1, unsigned int seed2);
  37 void seedRandomFastWithRandomSlow(); //seed the fast random generator, with two values from the slow random generator.