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phab/externals/figlet/crc.h
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crc.h
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/*
* crc.h - CRC calculation routine
*
* Version 1.0.1
*/
/*
* Copyright (C) 1995, Edward B. Hamrick
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of the copyright holders
* not be used in advertising or publicity pertaining to distribution of
* the software without specific, written prior permission. The copyright
* holders makes no representations about the suitability of this software
* for any purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT
* OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/*
* Changes from 1.0 to 1.0.1:
* Relicensed under the MIT license, with consent of the copyright holders.
* Claudio Matsuoka (Jan 11 2011)
*/
/*
* This CRC algorithm is the same as that used in zip. Normally it
* should be initialized with 0xffffffff, and the final CRC stored
* should be crc ^ 0xffffffff.
*
* It implements the polynomial:
*
* x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1
*/
#ifndef __CRC_H
#define __CRC_H
#ifdef __cplusplus
extern "C" {
#endif
unsigned long CrcUpdate( /* returns updated crc */
unsigned long crc, /* starting crc */
unsigned char *buffer, /* buffer to use to update crc */
long length /* length of buffer */
);
#ifdef __cplusplus
}
#endif
#endif
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