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Math
cl_math.h
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/*
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** ClanLib SDK
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** Copyright (c) 1997-2011 The ClanLib Team
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any damages
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** arising from the use of this software.
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**
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** Permission is granted to anyone to use this software for any purpose,
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** including commercial applications, and to alter it and redistribute it
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** freely, subject to the following restrictions:
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**
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** 1. The origin of this software must not be misrepresented; you must not
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** claim that you wrote the original software. If you use this software
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** in a product, an acknowledgment in the product documentation would be
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** appreciated but is not required.
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** 2. Altered source versions must be plainly marked as such, and must not be
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** misrepresented as being the original software.
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** 3. This notice may not be removed or altered from any source distribution.
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**
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** Note: Some of the libraries ClanLib may link to may have additional
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** requirements or restrictions.
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**
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** File Author(s):
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**
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** Magnus Norddahl
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*/
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#pragma once
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#include "../api_core.h"
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#include "../System/cl_platform.h"
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#include <cmath>
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#ifndef CL_PI
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#define CL_PI CL_M_PI_F
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#endif
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template
<
typename
T>
inline
T
cl_pow2
(T value) {
return
value*value; }
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template
<
typename
A,
typename
B>
inline
A
cl_min
(A a, B b) {
return
a < b ? a : b; }
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template
<
typename
A,
typename
B>
inline
A
cl_max
(A a, B b) {
return
a > b ? a : b; }
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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)); }
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template
<
typename
A,
typename
B,
typename
C>
inline
A
cl_mix
(A a, B b, C mix) {
return
a * (C(1) - mix) + b * mix; }
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