65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011, Tom Distler (http://tdistler.com)
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* The BSD License
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
*
|
||
|
|
* - Redistributions of source code must retain the above copyright notice,
|
||
|
|
* this list of conditions and the following disclaimer.
|
||
|
|
*
|
||
|
|
* - Redistributions in binary form must reproduce the above copyright notice,
|
||
|
|
* this list of conditions and the following disclaimer in the documentation
|
||
|
|
* and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* - Neither the name of the tdistler.com nor the names of its contributors may
|
||
|
|
* be used to endorse or promote products derived from this software without
|
||
|
|
* specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
||
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _MATH_UTILS_H_
|
||
|
|
#define _MATH_UTILS_H_
|
||
|
|
|
||
|
|
#include "iqa_os.h"
|
||
|
|
#include <math.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Rounds a float to the nearest integer.
|
||
|
|
*/
|
||
|
|
IQA_EXPORT int _round(float a);
|
||
|
|
|
||
|
|
IQA_EXPORT int _max(int x, int y);
|
||
|
|
|
||
|
|
IQA_EXPORT int _min(int x, int y);
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Compares 2 floats to the specified digit of precision.
|
||
|
|
* @return 0 if equal, 1 otherwise.
|
||
|
|
*/
|
||
|
|
IQA_EXPORT int _cmp_float(float a, float b, int digits);
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Compares 2 matrices with the specified precision. 'b' is assumed to be the
|
||
|
|
* same size as 'a' or smaller.
|
||
|
|
* @return 0 if equal, 1 otherwise
|
||
|
|
*/
|
||
|
|
IQA_EXPORT int _matrix_cmp(const float *a, const float *b, int w, int h, int digits);
|
||
|
|
|
||
|
|
#endif /*_MATH_UTILS_H_*/
|