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- /* $NetBSD: crc.c,v 1.4 1997/10/10 11:59:36 lukem Exp $ */
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+ /* $NetBSD: crc.c,v 1.5 1997/10/11 01:53:21 lukem Exp $ */
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/*-
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* Copyright (c) 1993
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static char sccsid [] = "@(#)crc.c 8.1 (Berkeley) 5/31/93" ;
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static char ORIGINAL_sccsid [] = "@(#)crc.c 5.2 (Berkeley) 4/4/91" ;
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#else
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- __RCSID ("$NetBSD: crc.c,v 1.4 1997/10/10 11:59:36 lukem Exp $" );
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+ __RCSID ("$NetBSD: crc.c,v 1.5 1997/10/11 01:53:21 lukem Exp $" );
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#endif
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#endif /* not lint */
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#include "extern.h"
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unsigned long crctab [] = {
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0x7fffffff ,
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- 0x77073096 , 0xee0e612c , 0x990951ba , 0x076dc419 , 0x706af48f ,
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- 0xe963a535 , 0x9e6495a3 , 0x0edb8832 , 0x79dcb8a4 , 0xe0d5e91e ,
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- 0x97d2d988 , 0x09b64c2b , 0x7eb17cbd , 0xe7b82d07 , 0x90bf1d91 ,
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- 0x1db71064 , 0x6ab020f2 , 0xf3b97148 , 0x84be41de , 0x1adad47d ,
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- 0x6ddde4eb , 0xf4d4b551 , 0x83d385c7 , 0x136c9856 , 0x646ba8c0 ,
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- 0xfd62f97a , 0x8a65c9ec , 0x14015c4f , 0x63066cd9 , 0xfa0f3d63 ,
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- 0x8d080df5 , 0x3b6e20c8 , 0x4c69105e , 0xd56041e4 , 0xa2677172 ,
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- 0x3c03e4d1 , 0x4b04d447 , 0xd20d85fd , 0xa50ab56b , 0x35b5a8fa ,
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- 0x42b2986c , 0xdbbbc9d6 , 0xacbcf940 , 0x32d86ce3 , 0x45df5c75 ,
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- 0xdcd60dcf , 0xabd13d59 , 0x26d930ac , 0x51de003a , 0xc8d75180 ,
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- 0xbfd06116 , 0x21b4f4b5 , 0x56b3c423 , 0xcfba9599 , 0xb8bda50f ,
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- 0x2802b89e , 0x5f058808 , 0xc60cd9b2 , 0xb10be924 , 0x2f6f7c87 ,
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- 0x58684c11 , 0xc1611dab , 0xb6662d3d , 0x76dc4190 , 0x01db7106 ,
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- 0x98d220bc , 0xefd5102a , 0x71b18589 , 0x06b6b51f , 0x9fbfe4a5 ,
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- 0xe8b8d433 , 0x7807c9a2 , 0x0f00f934 , 0x9609a88e , 0xe10e9818 ,
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- 0x7f6a0dbb , 0x086d3d2d , 0x91646c97 , 0xe6635c01 , 0x6b6b51f4 ,
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- 0x1c6c6162 , 0x856530d8 , 0xf262004e , 0x6c0695ed , 0x1b01a57b ,
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- 0x8208f4c1 , 0xf50fc457 , 0x65b0d9c6 , 0x12b7e950 , 0x8bbeb8ea ,
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- 0xfcb9887c , 0x62dd1ddf , 0x15da2d49 , 0x8cd37cf3 , 0xfbd44c65 ,
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- 0x4db26158 , 0x3ab551ce , 0xa3bc0074 , 0xd4bb30e2 , 0x4adfa541 ,
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- 0x3dd895d7 , 0xa4d1c46d , 0xd3d6f4fb , 0x4369e96a , 0x346ed9fc ,
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- 0xad678846 , 0xda60b8d0 , 0x44042d73 , 0x33031de5 , 0xaa0a4c5f ,
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- 0xdd0d7cc9 , 0x5005713c , 0x270241aa , 0xbe0b1010 , 0xc90c2086 ,
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- 0x5768b525 , 0x206f85b3 , 0xb966d409 , 0xce61e49f , 0x5edef90e ,
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- 0x29d9c998 , 0xb0d09822 , 0xc7d7a8b4 , 0x59b33d17 , 0x2eb40d81 ,
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- 0xb7bd5c3b , 0xc0ba6cad , 0xedb88320 , 0x9abfb3b6 , 0x03b6e20c ,
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- 0x74b1d29a , 0xead54739 , 0x9dd277af , 0x04db2615 , 0x73dc1683 ,
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- 0xe3630b12 , 0x94643b84 , 0x0d6d6a3e , 0x7a6a5aa8 , 0xe40ecf0b ,
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- 0x9309ff9d , 0x0a00ae27 , 0x7d079eb1 , 0xf00f9344 , 0x8708a3d2 ,
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- 0x1e01f268 , 0x6906c2fe , 0xf762575d , 0x806567cb , 0x196c3671 ,
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- 0x6e6b06e7 , 0xfed41b76 , 0x89d32be0 , 0x10da7a5a , 0x67dd4acc ,
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- 0xf9b9df6f , 0x8ebeeff9 , 0x17b7be43 , 0x60b08ed5 , 0xd6d6a3e8 ,
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- 0xa1d1937e , 0x38d8c2c4 , 0x4fdff252 , 0xd1bb67f1 , 0xa6bc5767 ,
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- 0x3fb506dd , 0x48b2364b , 0xd80d2bda , 0xaf0a1b4c , 0x36034af6 ,
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- 0x41047a60 , 0xdf60efc3 , 0xa867df55 , 0x316e8eef , 0x4669be79 ,
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- 0xcb61b38c , 0xbc66831a , 0x256fd2a0 , 0x5268e236 , 0xcc0c7795 ,
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- 0xbb0b4703 , 0x220216b9 , 0x5505262f , 0xc5ba3bbe , 0xb2bd0b28 ,
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- 0x2bb45a92 , 0x5cb36a04 , 0xc2d7ffa7 , 0xb5d0cf31 , 0x2cd99e8b ,
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- 0x5bdeae1d , 0x9b64c2b0 , 0xec63f226 , 0x756aa39c , 0x026d930a ,
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- 0x9c0906a9 , 0xeb0e363f , 0x72076785 , 0x05005713 , 0x95bf4a82 ,
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- 0xe2b87a14 , 0x7bb12bae , 0x0cb61b38 , 0x92d28e9b , 0xe5d5be0d ,
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- 0x7cdcefb7 , 0x0bdbdf21 , 0x86d3d2d4 , 0xf1d4e242 , 0x68ddb3f8 ,
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- 0x1fda836e , 0x81be16cd , 0xf6b9265b , 0x6fb077e1 , 0x18b74777 ,
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- 0x88085ae6 , 0xff0f6a70 , 0x66063bca , 0x11010b5c , 0x8f659eff ,
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- 0xf862ae69 , 0x616bffd3 , 0x166ccf45 , 0xa00ae278 , 0xd70dd2ee ,
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- 0x4e048354 , 0x3903b3c2 , 0xa7672661 , 0xd06016f7 , 0x4969474d ,
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- 0x3e6e77db , 0xaed16a4a , 0xd9d65adc , 0x40df0b66 , 0x37d83bf0 ,
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- 0xa9bcae53 , 0xdebb9ec5 , 0x47b2cf7f , 0x30b5ffe9 , 0xbdbdf21c ,
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- 0xcabac28a , 0x53b39330 , 0x24b4a3a6 , 0xbad03605 , 0xcdd70693 ,
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- 0x54de5729 , 0x23d967bf , 0xb3667a2e , 0xc4614ab8 , 0x5d681b02 ,
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- 0x2a6f2b94 , 0xb40bbe37 , 0xc30c8ea1 , 0x5a05df1b , 0x2d02ef8d
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+ 0x77073096 , 0xee0e612c , 0x990951ba , 0x076dc419 , 0x706af48f ,
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+ 0xe963a535 , 0x9e6495a3 , 0x0edb8832 , 0x79dcb8a4 , 0xe0d5e91e ,
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+ 0x97d2d988 , 0x09b64c2b , 0x7eb17cbd , 0xe7b82d07 , 0x90bf1d91 ,
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+ 0x1db71064 , 0x6ab020f2 , 0xf3b97148 , 0x84be41de , 0x1adad47d ,
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+ 0x6ddde4eb , 0xf4d4b551 , 0x83d385c7 , 0x136c9856 , 0x646ba8c0 ,
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+ 0xfd62f97a , 0x8a65c9ec , 0x14015c4f , 0x63066cd9 , 0xfa0f3d63 ,
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+ 0x8d080df5 , 0x3b6e20c8 , 0x4c69105e , 0xd56041e4 , 0xa2677172 ,
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+ 0x3c03e4d1 , 0x4b04d447 , 0xd20d85fd , 0xa50ab56b , 0x35b5a8fa ,
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+ 0x42b2986c , 0xdbbbc9d6 , 0xacbcf940 , 0x32d86ce3 , 0x45df5c75 ,
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+ 0xdcd60dcf , 0xabd13d59 , 0x26d930ac , 0x51de003a , 0xc8d75180 ,
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+ 0xbfd06116 , 0x21b4f4b5 , 0x56b3c423 , 0xcfba9599 , 0xb8bda50f ,
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+ 0x2802b89e , 0x5f058808 , 0xc60cd9b2 , 0xb10be924 , 0x2f6f7c87 ,
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+ 0x58684c11 , 0xc1611dab , 0xb6662d3d , 0x76dc4190 , 0x01db7106 ,
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+ 0x98d220bc , 0xefd5102a , 0x71b18589 , 0x06b6b51f , 0x9fbfe4a5 ,
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+ 0xe8b8d433 , 0x7807c9a2 , 0x0f00f934 , 0x9609a88e , 0xe10e9818 ,
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+ 0x7f6a0dbb , 0x086d3d2d , 0x91646c97 , 0xe6635c01 , 0x6b6b51f4 ,
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+ 0x1c6c6162 , 0x856530d8 , 0xf262004e , 0x6c0695ed , 0x1b01a57b ,
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+ 0x8208f4c1 , 0xf50fc457 , 0x65b0d9c6 , 0x12b7e950 , 0x8bbeb8ea ,
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+ 0xfcb9887c , 0x62dd1ddf , 0x15da2d49 , 0x8cd37cf3 , 0xfbd44c65 ,
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+ 0x4db26158 , 0x3ab551ce , 0xa3bc0074 , 0xd4bb30e2 , 0x4adfa541 ,
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+ 0x3dd895d7 , 0xa4d1c46d , 0xd3d6f4fb , 0x4369e96a , 0x346ed9fc ,
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+ 0xad678846 , 0xda60b8d0 , 0x44042d73 , 0x33031de5 , 0xaa0a4c5f ,
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+ 0xdd0d7cc9 , 0x5005713c , 0x270241aa , 0xbe0b1010 , 0xc90c2086 ,
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+ 0x5768b525 , 0x206f85b3 , 0xb966d409 , 0xce61e49f , 0x5edef90e ,
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+ 0x29d9c998 , 0xb0d09822 , 0xc7d7a8b4 , 0x59b33d17 , 0x2eb40d81 ,
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+ 0xb7bd5c3b , 0xc0ba6cad , 0xedb88320 , 0x9abfb3b6 , 0x03b6e20c ,
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+ 0x74b1d29a , 0xead54739 , 0x9dd277af , 0x04db2615 , 0x73dc1683 ,
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+ 0xe3630b12 , 0x94643b84 , 0x0d6d6a3e , 0x7a6a5aa8 , 0xe40ecf0b ,
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+ 0x9309ff9d , 0x0a00ae27 , 0x7d079eb1 , 0xf00f9344 , 0x8708a3d2 ,
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+ 0x1e01f268 , 0x6906c2fe , 0xf762575d , 0x806567cb , 0x196c3671 ,
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+ 0x6e6b06e7 , 0xfed41b76 , 0x89d32be0 , 0x10da7a5a , 0x67dd4acc ,
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+ 0xf9b9df6f , 0x8ebeeff9 , 0x17b7be43 , 0x60b08ed5 , 0xd6d6a3e8 ,
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+ 0xa1d1937e , 0x38d8c2c4 , 0x4fdff252 , 0xd1bb67f1 , 0xa6bc5767 ,
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+ 0x3fb506dd , 0x48b2364b , 0xd80d2bda , 0xaf0a1b4c , 0x36034af6 ,
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+ 0x41047a60 , 0xdf60efc3 , 0xa867df55 , 0x316e8eef , 0x4669be79 ,
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+ 0xcb61b38c , 0xbc66831a , 0x256fd2a0 , 0x5268e236 , 0xcc0c7795 ,
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+ 0xbb0b4703 , 0x220216b9 , 0x5505262f , 0xc5ba3bbe , 0xb2bd0b28 ,
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+ 0x2bb45a92 , 0x5cb36a04 , 0xc2d7ffa7 , 0xb5d0cf31 , 0x2cd99e8b ,
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+ 0x5bdeae1d , 0x9b64c2b0 , 0xec63f226 , 0x756aa39c , 0x026d930a ,
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+ 0x9c0906a9 , 0xeb0e363f , 0x72076785 , 0x05005713 , 0x95bf4a82 ,
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+ 0xe2b87a14 , 0x7bb12bae , 0x0cb61b38 , 0x92d28e9b , 0xe5d5be0d ,
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+ 0x7cdcefb7 , 0x0bdbdf21 , 0x86d3d2d4 , 0xf1d4e242 , 0x68ddb3f8 ,
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+ 0x1fda836e , 0x81be16cd , 0xf6b9265b , 0x6fb077e1 , 0x18b74777 ,
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+ 0x88085ae6 , 0xff0f6a70 , 0x66063bca , 0x11010b5c , 0x8f659eff ,
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+ 0xf862ae69 , 0x616bffd3 , 0x166ccf45 , 0xa00ae278 , 0xd70dd2ee ,
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+ 0x4e048354 , 0x3903b3c2 , 0xa7672661 , 0xd06016f7 , 0x4969474d ,
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+ 0x3e6e77db , 0xaed16a4a , 0xd9d65adc , 0x40df0b66 , 0x37d83bf0 ,
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+ 0xa9bcae53 , 0xdebb9ec5 , 0x47b2cf7f , 0x30b5ffe9 , 0xbdbdf21c ,
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+ 0xcabac28a , 0x53b39330 , 0x24b4a3a6 , 0xbad03605 , 0xcdd70693 ,
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+ 0x54de5729 , 0x23d967bf , 0xb3667a2e , 0xc4614ab8 , 0x5d681b02 ,
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+ 0x2a6f2b94 , 0xb40bbe37 , 0xc30c8ea1 , 0x5a05df1b , 0x2d02ef8d
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};
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-
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/*
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* crc --
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* Compute a POSIX.2 checksum. This routine modified by Jim Gillogly
@@ -112,7 +111,7 @@ unsigned long crctab[] = {
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*/
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unsigned long crcval ;
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- int step ;
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+ int step ;
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void
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crc_start ()
@@ -121,23 +120,21 @@ crc_start()
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}
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unsigned long
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- crc (ptr , nr ) /* Process nr bytes at a time; ptr points to them */
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- char * ptr ;
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- int nr ;
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+ crc (ptr , nr ) /* Process nr bytes at a time; ptr points to them */
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+ char * ptr ;
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+ int nr ;
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{
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- int i ;
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- char * p ;
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+ int i ;
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+ char * p ;
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while (nr > 0 )
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- for (p = ptr ; nr -- ; ++ p )
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- {
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- if (!(i = crcval >> 24 ^ * p ))
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- {
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+ for (p = ptr ; nr -- ; ++ p ) {
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+ if (!(i = crcval >> 24 ^ * p )) {
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i = step ++ ;
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- if (step >= sizeof (crctab )/ sizeof (crctab [0 ]))
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+ if (step >= sizeof (crctab ) / sizeof (crctab [0 ]))
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step = 0 ;
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}
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crcval = (crcval << 8 ) ^ crctab [i ];
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}
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- return crcval & 0xffffffff ; /* Mask to 32 bits. */
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+ return crcval & 0xffffffff ; /* Mask to 32 bits. */
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}
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