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60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
/* Residual - Virtual machine to run LucasArts' 3D adventure games
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*
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* Residual is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the AUTHORS
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*/
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#ifndef COMMON_UTIL_H
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#define COMMON_UTIL_H
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#include "common/sys.h"
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#ifdef MIN
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#undef MIN
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#endif
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#ifdef MAX
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#undef MAX
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#endif
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template<typename T> inline T ABS (T x) { return (x>=0) ? x : -x; }
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template<typename T> inline T MIN (T a, T b) { return (a<b) ? a : b; }
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template<typename T> inline T MAX (T a, T b) { return (a>b) ? a : b; }
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template<typename T> inline T CLIP (T v, T amin, T amax)
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{ if (v < amin) return amin; else if (v > amax) return amax; else return v; }
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/**
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* Template method which swaps the vaulues of its two parameters.
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*/
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template<typename T> inline void SWAP(T &a, T &b) { T tmp = a; a = b; b = tmp; }
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#if defined(ARRAYSIZE)
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// VS2005beta2 introduces new stuff in winnt.h
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#undef ARRAYSIZE
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#endif
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#define ARRAYSIZE(x) ((int)(sizeof(x) / sizeof(x[0])))
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#ifndef round
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#define round(x) ((x > 0.0) ? floor((x) + 0.5) : ceil((x) - 0.5))
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#endif
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#endif
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