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MySQL 5.1: mysql/src/5.1-dbg/strings/strcmp.c Source File

mysql/src/5.1-dbg/strings/strcmp.c

00001 /* Copyright (C) 2000 MySQL AB
00002 
00003    This program is free software; you can redistribute it and/or modify
00004    it under the terms of the GNU General Public License as published by
00005    the Free Software Foundation; either version 2 of the License, or
00006    (at your option) any later version.
00007 
00008    This program is distributed in the hope that it will be useful,
00009    but WITHOUT ANY WARRANTY; without even the implied warranty of
00010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011    GNU General Public License for more details.
00012 
00013    You should have received a copy of the GNU General Public License
00014    along with this program; if not, write to the Free Software
00015    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
00016 
00017 /*  File   : strcmp.c
00018     Author : Richard A. O'Keefe.
00019     Updated: 10 April 1984
00020     Defines: strcmp()
00021 
00022     strcmp(s, t) returns > 0, = 0,  or < 0  when s > t, s = t,  or s < t
00023     according  to  the  ordinary  lexicographical  order.   To  test for
00024     equality, the macro streql(s,t) is clearer than  !strcmp(s,t).  Note
00025     that  if the string contains characters outside the range 0..127 the
00026     result is machine-dependent; PDP-11s and  VAXen  use  signed  bytes,
00027     some other machines use unsigned bytes.
00028 */
00029 
00030 #include "strings.h"
00031 
00032 int strcmp(register const char *s, register const char *t)
00033 {
00034   while (*s == *t++) if (!*s++) return 0;
00035   return s[0]-t[-1];
00036 }

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