1/*
2---------------------------------------------------------------------------
3Open Asset Import Library (assimp)
4---------------------------------------------------------------------------
5
6Copyright (c) 2006-2016, assimp team
7
8All rights reserved.
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10Redistribution and use of this software in source and binary forms,
11with or without modification, are permitted provided that the following
12conditions are met:
13
14* Redistributions of source code must retain the above
15 copyright notice, this list of conditions and the
16 following disclaimer.
17
18* Redistributions in binary form must reproduce the above
19 copyright notice, this list of conditions and the
20 following disclaimer in the documentation and/or other
21 materials provided with the distribution.
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23* Neither the name of the assimp team, nor the names of its
24 contributors may be used to endorse or promote products
25 derived from this software without specific prior
26 written permission of the assimp team.
27
28THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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34LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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40*/
41
42/** @file MathFunctions.h
43 * @brief Implementation of the math functions (gcd and lcm)
44 *
45 * Copied from BoostWorkaround/math
46 */
47
48namespace Assimp {
49namespace Math {
50
51// TODO: use binary GCD for unsigned integers ....
52template < typename IntegerType >
53IntegerType gcd( IntegerType a, IntegerType b )
54{
55 const IntegerType zero = (IntegerType)0;
56 while ( true )
57 {
58 if ( a == zero )
59 return b;
60 b %= a;
61
62 if ( b == zero )
63 return a;
64 a %= b;
65 }
66}
67
68template < typename IntegerType >
69IntegerType lcm( IntegerType a, IntegerType b )
70{
71 const IntegerType t = gcd (a,b);
72 if (!t)return t;
73 return a / t * b;
74}
75
76}
77}
78