1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1996-2011 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * * 19da2e3ebdSchin ***********************************************************************/ 207c2fbfb3SApril Chin #pragma prototyped 217c2fbfb3SApril Chin 227c2fbfb3SApril Chin /* 237c2fbfb3SApril Chin * bsd 247c2fbfb3SApril Chin */ 257c2fbfb3SApril Chin 267c2fbfb3SApril Chin #define bsd_description \ 277c2fbfb3SApril Chin "The BSD checksum." 287c2fbfb3SApril Chin #define bsd_options 0 297c2fbfb3SApril Chin #define bsd_match "bsd|ucb" 307c2fbfb3SApril Chin #define bsd_open long_open 317c2fbfb3SApril Chin #define bsd_init long_init 327c2fbfb3SApril Chin #define bsd_done short_done 337c2fbfb3SApril Chin #define bsd_print long_print 347c2fbfb3SApril Chin #define bsd_data long_data 357c2fbfb3SApril Chin #define bsd_scale 1024 367c2fbfb3SApril Chin 377c2fbfb3SApril Chin static int bsd_block(register Sum_t * p,const void * s,size_t n)387c2fbfb3SApril Chinbsd_block(register Sum_t* p, const void* s, size_t n) 397c2fbfb3SApril Chin { 407c2fbfb3SApril Chin register uint32_t c = ((Integral_t*)p)->sum; 417c2fbfb3SApril Chin register unsigned char* b = (unsigned char*)s; 427c2fbfb3SApril Chin register unsigned char* e = b + n; 437c2fbfb3SApril Chin 447c2fbfb3SApril Chin while (b < e) 457c2fbfb3SApril Chin c = ((c >> 1) + *b++ + ((c & 01) ? 0x8000 : 0)) & 0xffff; 467c2fbfb3SApril Chin ((Integral_t*)p)->sum = c; 477c2fbfb3SApril Chin return 0; 487c2fbfb3SApril Chin } 49