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Location: cpp/openttd-patchpack/source/src/core/math_func.cpp - annotation
r15869:3237cbc42f75
1.5 KiB
text/x-c
(svn r20561) -Fix: compiler warning
r11414:66dd9ef9c484 r11414:66dd9ef9c484 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 r11414:66dd9ef9c484 | /* $Id$ */
/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file math_func.cpp Math functions. */
#include "../stdafx.h"
#include "math_func.hpp"
/**
* Compute least common multiple (lcm) of arguments \a a and \a b, the smallest
* integer value that is a multiple of both \a a and \a b.
* @param a First number.
* @param b second number.
* @return Least common multiple of values \a a and \a b.
*
* @note This function only works for non-negative values of \a a and \a b.
*/
int LeastCommonMultiple(int a, int b)
{
if (a == 0 || b == 0) return 0; // By definition.
if (a == 1 || a == b) return b;
if (b == 1) return a;
return a * b / GreatestCommonDivisor(a, b);
}
/**
* Compute greatest common divisor (gcd) of \a a and \a b.
* @param a First number.
* @param b second number.
* @return Greatest common divisor of \a a and \a b.
*/
int GreatestCommonDivisor(int a, int b)
{
while (b != 0) {
int t = b;
b = a % b;
a = t;
}
return a;
}
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