package/rbcfg/src/cyg_crc.h

   1 //==========================================================================
   2 //
   3 //      crc.h
   4 //
   5 //      Interface for the CRC algorithms.
   6 //
   7 //==========================================================================
   8 //####ECOSGPLCOPYRIGHTBEGIN####
   9 // -------------------------------------------
  10 // This file is part of eCos, the Embedded Configurable Operating System.
  11 // Copyright (C) 2002 Andrew Lunn
  12 //
  13 // eCos is free software; you can redistribute it and/or modify it under
  14 // the terms of the GNU General Public License as published by the Free
  15 // Software Foundation; either version 2 or (at your option) any later version.
  16 //
  17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
  18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20 // for more details.
  21 //
  22 // You should have received a copy of the GNU General Public License along
  23 // with eCos; if not, write to the Free Software Foundation, Inc.,
  24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  25 //
  26 // As a special exception, if other files instantiate templates or use macros
  27 // or inline functions from this file, or you compile this file and link it
  28 // with other works to produce a work based on this file, this file does not
  29 // by itself cause the resulting work to be covered by the GNU General Public
  30 // License. However the source code for this file must still be made available
  31 // in accordance with section (3) of the GNU General Public License.
  32 //
  33 // This exception does not invalidate any other reasons why a work based on
  34 // this file might be covered by the GNU General Public License.
  35 //
  36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
  37 // at http://sources.redhat.com/ecos/ecos-license/
  38 // -------------------------------------------
  39 //####ECOSGPLCOPYRIGHTEND####
  40 //==========================================================================
  41 //#####DESCRIPTIONBEGIN####
  42 //
  43 // Author(s):    Andrew Lunn
  44 // Contributors: Andrew Lunn
  45 // Date:         2002-08-06
  46 // Purpose:
  47 // Description:
  48 //
  49 // This code is part of eCos (tm).
  50 //
  51 //####DESCRIPTIONEND####
  52 //
  53 //==========================================================================
  54
  55 #ifndef _SERVICES_CRC_CRC_H_
  56 #define _SERVICES_CRC_CRC_H_
  57
  58 #if 0
  59 #include <cyg/infra/cyg_type.h>
  60 #else
  61 #include <stdint.h>
  62 typedef uint32_t cyg_uint32;
  63 typedef uint16_t cyg_uint16;
  64 #endif
  65
  66 #ifndef __externC
  67 # ifdef __cplusplus
  68 #  define __externC extern "C"
  69 # else
  70 #  define __externC extern
  71 # endif
  72 #endif
  73
  74 // Compute a CRC, using the POSIX 1003 definition
  75
  76 __externC cyg_uint32
  77 cyg_posix_crc32(unsigned char *s, int len);
  78
  79 // Gary S. Brown's 32 bit CRC
  80
  81 __externC cyg_uint32
  82 cyg_crc32(unsigned char *s, int len);
  83
  84 // Gary S. Brown's 32 bit CRC, but accumulate the result from a
  85 // previous CRC calculation
  86
  87 __externC cyg_uint32
  88 cyg_crc32_accumulate(cyg_uint32 crc, unsigned char *s, int len);
  89
  90 // Ethernet FCS Algorithm
  91
  92 __externC cyg_uint32
  93 cyg_ether_crc32(unsigned char *s, int len);
  94
  95 // Ethernet FCS algorithm, but accumulate the result from a previous
  96 // CRC calculation.
  97
  98 __externC cyg_uint32
  99 cyg_ether_crc32_accumulate(cyg_uint32 crc, unsigned char *s, int len);
 100
 101 // 16 bit CRC with polynomial x^16+x^12+x^5+1
 102
 103 __externC cyg_uint16
 104 cyg_crc16(unsigned char *s, int len);
 105
 106 #endif // _SERVICES_CRC_CRC_H_
 107
 108
 109