mirror of
https://we.phorge.it/source/phorge.git
synced 2024-11-22 23:02:42 +01:00
63 lines
2 KiB
C
63 lines
2 KiB
C
|
/*
|
||
|
|
* 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
|