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externals/figlet/crc.h
- This file was added.
/* | |||||
* 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 |