9b6d83988d
Zipio files were licensed under a restrictive license containing a clause mandating that any modifications to the source code must be sent via e-mail to the copyright owner. The author was contacted and permitted the files to be relicensed under the MIT license. This should avoid any problems restributing FIGlet as free software in Linux distributions. Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/*
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* crc.h - CRC calculation routine
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*
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* Version 1.0.1
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*/
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/*
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* Copyright (C) 1995, Edward B. Hamrick
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of the copyright holders
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* not be used in advertising or publicity pertaining to distribution of
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* the software without specific, written prior permission. The copyright
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* holders makes no representations about the suitability of this software
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* for any purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
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* IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT
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* OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* Changes from 1.0 to 1.0.1:
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* Relicensed under the MIT license, with consent of the copyright holders.
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* Claudio Matsuoka (Jan 11 2011)
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*/
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/*
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* This CRC algorithm is the same as that used in zip. Normally it
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* should be initialized with 0xffffffff, and the final CRC stored
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* should be crc ^ 0xffffffff.
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*
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* It implements the polynomial:
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*
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* 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
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*/
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#ifndef __CRC_H
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#define __CRC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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unsigned long CrcUpdate( /* returns updated crc */
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unsigned long crc, /* starting crc */
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unsigned char *buffer, /* buffer to use to update crc */
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long length /* length of buffer */
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
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