checksums.h

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#ifndef CHECKSUMS_GROUP
#define CHECKSUMS_GROUP
 
/*****************************************************************************\
*                                                                             *
*  Name   : checksums group                                                   *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 1992-$now By Author.  This program is free software; you can  *
* redistribute it and/or modify it under the terms of the GNU General Public  *
* License as published by the Free Software Foundation; either version 2 of   *
* the License or (at your option) any later version.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/
 
#include <basis/definitions.h>
 
/* @file checksums.h
  A collection of useful checksum calculators.
*/
 
namespace structures {
 
class checksums
{
public:
 
  static basis::abyte byte_checksum(const basis::abyte *data, int length);
 
  static basis::un_int short_checksum(const basis::abyte *data, int length);
 
  static basis::un_short fletcher_checksum(const basis::abyte *data, int length);
 
  static basis::un_short rolling_fletcher_checksum(basis::un_short previous, const basis::abyte *data, int len);
 
  static unsigned int bizarre_checksum(const basis::abyte *data, int length);
 
  static basis::un_int hash_bytes(const void *key_data, int key_length);
 
};
 
} //namespace.
 
#endif