blitz  Version 1.0.2
minmax.h
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1 // -*- C++ -*-
2 /***************************************************************************
3  * blitz/minmax.h Declaration of min and max functions
4  *
5  * $Id$
6  *
7  * Copyright (C) 1997-2011 Todd Veldhuizen <tveldhui@acm.org>
8  *
9  * This file is a part of Blitz.
10  *
11  * Blitz is free software: you can redistribute it and/or modify
12  * it under the terms of the GNU Lesser General Public License
13  * as published by the Free Software Foundation, either version 3
14  * of the License, or (at your option) any later version.
15  *
16  * Blitz is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with Blitz. If not, see <http://www.gnu.org/licenses/>.
23  *
24  * Suggestions: blitz-devel@lists.sourceforge.net
25  * Bugs: blitz-support@lists.sourceforge.net
26  *
27  * For more information, please see the Blitz++ Home Page:
28  * https://sourceforge.net/projects/blitz/
29  *
30  ***************************************************************************/
31 
32 #ifndef BZ_MINMAX_H
33 #define BZ_MINMAX_H
34 
35 #include <blitz/promote.h>
36 
37 namespace blitz {
38 
39 /*
40  * These functions are in their own namespace (blitz::minmax) to avoid
41  * conflicts with the array reduction operations min and max.
42  */
43 
44 namespace extrema {
45 
46 template<typename T1, typename T2>
47 BZ_PROMOTE(T1,T2) (min)(const T1& a, const T2& b)
48 {
49  typedef BZ_PROMOTE(T1,T2) T_promote;
50 
51  if (a <= b)
52  return T_promote(a);
53  else
54  return T_promote(b);
55 }
56 
57 template<typename T1, typename T2>
58 BZ_PROMOTE(T1,T2) (max)(const T1& a, const T2& b)
59 {
60  typedef BZ_PROMOTE(T1,T2) T_promote;
61 
62  if (a >= b)
63  return T_promote(a);
64  else
65  return T_promote(b);
66 }
67 
68 }
69 
70 }
71 
72 #endif
Definition: array-impl.h:66
else return T_promote(b)
BZ_PROMOTE(T1, T2)(min)(const T1 &a
N_length & a
Definition: tvecglobs.h:47
const T2 & b
Definition: minmax.h:48
if(a<=b) return T_promote(a)