math_func.cpp

Go to the documentation of this file.
00001 /* $Id: math_func.cpp 17279 2009-08-25 09:22:20Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "../stdafx.h"
00013 #include "math_func.hpp"
00014 
00024 int LeastCommonMultiple(int a, int b)
00025 {
00026   if (a == 0 || b == 0) return 0; // By definition.
00027   if (a == 1 || a == b) return b;
00028   if (b == 1) return a;
00029 
00030   return a * b / GreatestCommonDivisor(a, b);
00031 }
00032 
00039 int GreatestCommonDivisor(int a, int b)
00040 {
00041   while (b != 0) {
00042     int t = b;
00043     b = a % b;
00044     a = t;
00045   }
00046   return a;
00047 
00048 }

Generated on Fri Apr 30 21:55:19 2010 for OpenTTD by  doxygen 1.6.1