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BitMasks.cpp
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BitMasks.cpp
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/*
* Unitex
*
* Copyright (C) 2001-2017 Université Paris-Est Marne-la-Vallée <unitex@univ-mlv.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
*/
#include "BitMasks.h"
#ifndef HAS_UNITEX_NAMESPACE
#define HAS_UNITEX_NAMESPACE 1
#endif
namespace unitex {
/**
* Tests if the given bit mask is set on the given byte.
*/
int is_bit_mask_set(unsigned char value,unsigned char mask) {
return value & mask;
}
/**
* Set the given mask on the given value.
*/
void set_bit_mask(unsigned char *value,unsigned char mask) {
unset_bit_mask(value,mask);
(*value)=(*value) | mask;
}
/**
* Unset the given mask on the given value.
*/
void unset_bit_mask(unsigned char *value,unsigned char mask) {
(*value)=(*value) & (0xFF-mask);
}
} // namespace unitex