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bcmp.c
Package: mysql-3.23.35.tar.gz [view]
Upload User: tsgydb
Upload Date: 2007-04-14
Package Size: 10674k
Code Size: 2k
Category:
MySQL
Development Platform:
Visual C++
- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA */
- /*
- bcmp(s1, s2, len) returns 0 if the "len" bytes starting at "s1" are
- identical to the "len" bytes starting at "s2", non-zero if they are
- different.
- Now only used with purify.
- */
- #include <global.h>
- #include "m_string.h"
- #if !defined(bcmp) && !defined(HAVE_BCMP)
- #if defined(MC68000) && defined(DS90)
- int bcmp(s1,s2, len)
- const char *s1;
- const char *s2;
- uint len; /* 0 <= len <= 65535 */
- {
- asm(" movl 12(a7),d0 ");
- asm(" subqw #1,d0 ");
- asm(" blt .L5 ");
- asm(" movl 4(a7),a1 ");
- asm(" movl 8(a7),a0 ");
- asm(".L4: cmpmb (a0)+,(a1)+ ");
- asm(" dbne d0,.L4 ");
- asm(".L5: addqw #1,d0 ");
- }
- #else
- #ifdef HAVE_purify
- int my_bcmp(s1, s2, len)
- #else
- int bcmp(s1, s2, len)
- #endif
- register const char *s1;
- register const char *s2;
- register uint len;
- {
- while (len-- != 0 && *s1++ == *s2++) ;
- return len+1;
- }
- #endif
- #endif /* BSD_FUNCS */