cl_math.h

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00001 /*
00002 **  ClanLib SDK
00003 **  Copyright (c) 1997-2011 The ClanLib Team
00004 **
00005 **  This software is provided 'as-is', without any express or implied
00006 **  warranty.  In no event will the authors be held liable for any damages
00007 **  arising from the use of this software.
00008 **
00009 **  Permission is granted to anyone to use this software for any purpose,
00010 **  including commercial applications, and to alter it and redistribute it
00011 **  freely, subject to the following restrictions:
00012 **
00013 **  1. The origin of this software must not be misrepresented; you must not
00014 **     claim that you wrote the original software. If you use this software
00015 **     in a product, an acknowledgment in the product documentation would be
00016 **     appreciated but is not required.
00017 **  2. Altered source versions must be plainly marked as such, and must not be
00018 **     misrepresented as being the original software.
00019 **  3. This notice may not be removed or altered from any source distribution.
00020 **
00021 **  Note: Some of the libraries ClanLib may link to may have additional
00022 **  requirements or restrictions.
00023 **
00024 **  File Author(s):
00025 **
00026 **    Magnus Norddahl
00027 */
00028 
00031 
00032 #pragma once
00033 
00034 #include "../api_core.h"
00035 #include "../System/cl_platform.h"
00036 #include <cmath>
00037 
00038 #ifndef CL_PI
00039 #define CL_PI CL_M_PI_F
00040 #endif
00041 
00042 template<typename T> inline T cl_pow2(T value) { return value*value; }
00043 template<typename A, typename B> inline A cl_min(A a, B b) { return a < b ? a : b; }
00044 template<typename A, typename B> inline A cl_max(A a, B b) { return a > b ? a : b; }
00045 template<typename A, typename B, typename C> inline C cl_clamp(A val, B minval, C maxval) { return cl_max(minval, cl_min(maxval, val)); }
00046 
00048