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935ced1edd
Summary: Ref T7785. This prepares for (but does not yet use) a pure PHP implementation of Figlet parsing and rendering. Figlet is somewhat complex, but a parser already exists in PEAR. I'll make sure it's suitable and hook it up in the next diff. Test Plan: N/A, code not reachable Reviewers: chad Reviewed By: chad Maniphest Tasks: T9408, T7785 Differential Revision: https://secure.phabricator.com/D14101
62 lines
2 KiB
C
62 lines
2 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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