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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2014, Mohammad Norouzi, Ali Punjani, David J. Fleet,
// all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's 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.
//
// * The name of the copyright holders may not 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 Intel Corporation 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.
//
//M*/
#ifndef __OPENCV_BITARRAY_HPP
#define __OPENCV_BITARRAY_HPP
#ifdef _WIN32
#pragma warning( disable : 4267 )
#endif
#include "types.hpp"
#include <stdio.h>
#include <math.h>
#include <string.h>
/* class defining a sequence of bits */
class bitarray
{
public:
/* pointer to bits sequence and sequence's length */
UINT32 *arr;
UINT32 length;
/* constructor setting default values */
bitarray()
{
arr = NULL;
length = 0;
}
/* constructor setting sequence's length */
bitarray( UINT64 _bits )
{
init( _bits );
}
/* initializer of private fields */
void init( UINT64 _bits )
{
length = (UINT32) ceil( _bits / 32.00 );
arr = new UINT32[length];
erase();
}
/* destructor */
~bitarray()
{
if( arr )
delete[] arr;
}
inline void flip( UINT64 index )
{
arr[index >> 5] ^= ( (UINT32) 0x01 ) << ( index % 32 );
}
inline void set( UINT64 index )
{
arr[index >> 5] |= ( (UINT32) 0x01 ) << ( index % 32 );
}
inline UINT8 get( UINT64 index )
{
return ( arr[index >> 5] & ( ( (UINT32) 0x01 ) << ( index % 32 ) ) ) != 0;
}
/* reserve menory for an UINT32 */
inline void erase()
{
memset( arr, 0, sizeof(UINT32) * length );
}
};
#endif