src/random.cpp

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@sns.it>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #include "random.h"
  12
  13 Random* Random::m_instance = 0;
  14
  15 Random::Random() { }
  16
  17 Random::IntegerGenerator Random::rand(int min, int max) {
  18   return IntegerGenerator(&m_generator, IntegerDistribution(min, max));
  19 }
  20
  21 Random::RealGenerator Random::rand(float min, float max) {
  22   return RealGenerator(&m_generator, RealDistribution(min, max));
  23 }
  24
  25 Random::RealGenerator Random::rand(double min, double max) {
  26   return rand(static_cast<float>(min),
  27               static_cast<float>(max));
  28 }
  29
  30 Random& Random::instance() {
  31   if (!m_instance) {
  32     m_instance = new Random;
  33   }
  34   return *m_instance;
  35 }
  36