cc65/src/common/bitops.h

74 lines
3.5 KiB
C

/*****************************************************************************/
/* */
/* bitops.h */
/* */
/* Single bit operations */
/* */
/* */
/* */
/* (C) 1998 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef BITOPS_H
#define BITOPS_H
#include "attrib.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
unsigned BitFind (unsigned long Val) attribute ((const));
/* Find the first bit that is set in Val. Val must *not* be zero */
void BitSet (void* Data, unsigned Bit);
/* Set a bit in a char array */
void BitReset (void* Data, unsigned Bit);
/* Reset a bit in a char array */
int BitIsSet (void* Data, unsigned Bit) attribute ((const));
/* Check if a bit is set in a char array */
int BitIsReset (void* Data, unsigned Bit) attribute ((const));
/* Check if a bit is reset in a char array */
void BitMerge (void* Target, const void* Source, unsigned Size);
/* Merge the bits of two char arrays (that is, do an or for the full array) */
/* End of bitops.h */
#endif