blitz Version 0.10
blitz/minmax.h
Go to the documentation of this file.
00001 // -*- C++ -*-
00002 /***************************************************************************
00003  * blitz/minmax.h  Declaration of min and max functions
00004  *
00005  * $Id: minmax.h,v 1.7 2011/03/25 22:41:16 julianc Exp $
00006  *
00007  * Copyright (C) 1997-2011 Todd Veldhuizen <tveldhui@acm.org>
00008  *
00009  * This file is a part of Blitz.
00010  *
00011  * Blitz is free software: you can redistribute it and/or modify 
00012  * it under the terms of the GNU Lesser General Public License
00013  * as published by the Free Software Foundation, either version 3
00014  * of the License, or (at your option) any later version.
00015  *
00016  * Blitz is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  * GNU Lesser General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU Lesser General Public 
00022  * License along with Blitz.  If not, see <http://www.gnu.org/licenses/>.
00023  * 
00024  * Suggestions:          blitz-devel@lists.sourceforge.net
00025  * Bugs:                 blitz-support@lists.sourceforge.net    
00026  *
00027  * For more information, please see the Blitz++ Home Page:
00028  *    https://sourceforge.net/projects/blitz/
00029  *
00030  ***************************************************************************/
00031 
00032 #ifndef BZ_MINMAX_H
00033 #define BZ_MINMAX_H
00034 
00035 #include <blitz/promote.h>
00036 
00037 BZ_NAMESPACE(blitz)
00038 
00039 /*
00040  * These functions are in their own namespace (blitz::minmax) to avoid
00041  * conflicts with the array reduction operations min and max.
00042  */
00043 
00044 BZ_NAMESPACE(extrema)
00045 
00046 template<typename T1, typename T2>
00047 BZ_PROMOTE(T1,T2) (min)(const T1& a, const T2& b)
00048 {
00049     typedef BZ_PROMOTE(T1,T2) T_promote;
00050 
00051     if (a <= b)
00052         return T_promote(a);
00053     else
00054         return T_promote(b);
00055 }
00056 
00057 template<typename T1, typename T2>
00058 BZ_PROMOTE(T1,T2) (max)(const T1& a, const T2& b)
00059 {
00060     typedef BZ_PROMOTE(T1,T2) T_promote;
00061 
00062     if (a >= b)
00063         return T_promote(a);
00064     else
00065         return T_promote(b);
00066 }
00067 
00068 BZ_NAMESPACE_END
00069 
00070 BZ_NAMESPACE_END
00071 
00072 #endif
 All Classes Files Functions Variables Typedefs Enumerations Enumerator Friends Defines