| 1 | /*************************************************************************** |
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| 2 | * blitz/minmax.h Declaration of min and max functions |
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| 3 | * |
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| 4 | * $Id: minmax.h,v 1.4 2003/12/11 03:44:22 julianc Exp $ |
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| 5 | * |
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| 6 | * Copyright (C) 1997-2001 Todd Veldhuizen <tveldhui@oonumerics.org> |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU General Public License |
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| 10 | * as published by the Free Software Foundation; either version 2 |
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| 11 | * of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU General Public License for more details. |
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| 17 | * |
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| 18 | * Suggestions: blitz-dev@oonumerics.org |
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| 19 | * Bugs: blitz-bugs@oonumerics.org |
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| 20 | * |
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| 21 | * For more information, please see the Blitz++ Home Page: |
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| 22 | * http://oonumerics.org/blitz/ |
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| 23 | * |
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| 24 | ***************************************************************************/ |
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| 25 | |
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| 26 | #ifndef BZ_MINMAX_H |
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| 27 | #define BZ_MINMAX_H |
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| 28 | |
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| 29 | #include <blitz/promote.h> |
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| 30 | |
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| 31 | BZ_NAMESPACE(blitz) |
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| 32 | |
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| 33 | /* |
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| 34 | * These functions are in their own namespace (blitz::minmax) to avoid |
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| 35 | * conflicts with the array reduction operations min and max. |
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| 36 | */ |
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| 37 | |
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| 38 | BZ_NAMESPACE(minmax) |
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| 39 | |
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| 40 | template<typename T1, typename T2> |
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| 41 | BZ_PROMOTE(T1,T2) min(const T1& a, const T2& b) |
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| 42 | { |
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| 43 | typedef BZ_PROMOTE(T1,T2) T_promote; |
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| 44 | |
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| 45 | if (a <= b) |
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| 46 | return T_promote(a); |
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| 47 | else |
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| 48 | return T_promote(b); |
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| 49 | } |
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| 50 | |
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| 51 | template<typename T1, typename T2> |
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| 52 | BZ_PROMOTE(T1,T2) max(const T1& a, const T2& b) |
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| 53 | { |
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| 54 | typedef BZ_PROMOTE(T1,T2) T_promote; |
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| 55 | |
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| 56 | if (a >= b) |
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| 57 | return T_promote(a); |
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| 58 | else |
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| 59 | return T_promote(b); |
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| 60 | } |
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| 61 | |
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| 62 | BZ_NAMESPACE_END |
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| 63 | |
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| 64 | BZ_NAMESPACE_END |
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| 65 | |
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| 66 | #endif |
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