KiCad PCB EDA Suite
math_util.h
Go to the documentation of this file.
1 /*
2  * This program source code file is part of KICAD, a free EDA CAD application.
3  *
4  * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
5  * Copyright (C) CERN
6  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License
10  * as published by the Free Software Foundation; either version 2
11  * of the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, you may find one here:
20  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
21  * or you may search the http://www.gnu.org website for the version 2 license,
22  * or you may write to the Free Software Foundation, Inc.,
23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
24  */
25 
26 #ifndef __MATH_UTIL_H
27 #define __MATH_UTIL_H
28 
29 #include <stdint.h>
30 
37 template <typename T>
38 T rescale( T aNumerator, T aValue, T aDenominator )
39 {
40  return aNumerator * aValue / aDenominator;
41 }
42 
43 template <typename T>
44 int sign( T val )
45 {
46  return ( T( 0 ) < val) - ( val < T( 0 ) );
47 }
48 
49 // explicit specializations for integer types, taking care of overflow.
50 template <>
51 int rescale( int aNumerator, int aValue, int aDenominator );
52 
53 template <>
54 int64_t rescale( int64_t aNumerator, int64_t aValue, int64_t aDenominator );
55 
56 #endif // __MATH_UTIL_H
T rescale(T aNumerator, T aValue, T aDenominator)
Function rescale()
Definition: math_util.h:38
T
enum T contains all this lexer's tokens.
int sign(T val)
Definition: math_util.h:44