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btMinMax.h
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00001 /*
00002 Copyright (c) 2003-2006 Gino van den Bergen / Erwin Coumans  http://continuousphysics.com/Bullet/
00003 
00004 This software is provided 'as-is', without any express or implied warranty.
00005 In no event will the authors be held liable for any damages arising from the use of this software.
00006 Permission is granted to anyone to use this software for any purpose, 
00007 including commercial applications, and to alter it and redistribute it freely, 
00008 subject to the following restrictions:
00009 
00010 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
00011 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
00012 3. This notice may not be removed or altered from any source distribution.
00013 */
00014 
00015 
00016 
00017 #ifndef GEN_MINMAX_H
00018 #define GEN_MINMAX_H
00019 
00020 template <class T>
00021 SIMD_FORCE_INLINE const T& btMin(const T& a, const T& b) 
00022 {
00023   return a < b ? a : b ;
00024 }
00025 
00026 template <class T>
00027 SIMD_FORCE_INLINE const T& btMax(const T& a, const T& b) 
00028 {
00029   return  a > b ? a : b;
00030 }
00031 
00032 template <class T>
00033 SIMD_FORCE_INLINE const T& GEN_clamped(const T& a, const T& lb, const T& ub) 
00034 {
00035        return a < lb ? lb : (ub < a ? ub : a); 
00036 }
00037 
00038 template <class T>
00039 SIMD_FORCE_INLINE void btSetMin(T& a, const T& b) 
00040 {
00041     if (b < a) 
00042        {
00043               a = b;
00044        }
00045 }
00046 
00047 template <class T>
00048 SIMD_FORCE_INLINE void btSetMax(T& a, const T& b) 
00049 {
00050     if (a < b) 
00051        {
00052               a = b;
00053        }
00054 }
00055 
00056 template <class T>
00057 SIMD_FORCE_INLINE void GEN_clamp(T& a, const T& lb, const T& ub) 
00058 {
00059        if (a < lb) 
00060        {
00061               a = lb; 
00062        }
00063        else if (ub < a) 
00064        {
00065               a = ub;
00066        }
00067 }
00068 
00069 #endif