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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/generic/strcasecmp.c
downloadglibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz
initial import
Diffstat (limited to 'sysdeps/generic/strcasecmp.c')
-rw-r--r--sysdeps/generic/strcasecmp.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/generic/strcasecmp.c b/sysdeps/generic/strcasecmp.c
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+++ b/sysdeps/generic/strcasecmp.c
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+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C 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.
+
+The GNU C 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 the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <string.h>
+#include <ctype.h>
+
+/* Compare S1 and S2, ignoring case, returning less than, equal to or
+ greater than zero if S1 is lexiographically less than,
+ equal to or greater than S2. */
+int
+DEFUN(strcasecmp, (s1, s2), CONST char *s1 AND CONST char *s2)
+{
+ register CONST unsigned char *p1 = (CONST unsigned char *) s1;
+ register CONST unsigned char *p2 = (CONST unsigned char *) s2;
+ unsigned char c1, c2;
+
+ if (p1 == p2)
+ return 0;
+
+ do
+ {
+ c1 = tolower (*p1++);
+ c2 = tolower (*p2++);
+ if (c1 == '\0')
+ break;
+ }
+ while (c1 == c2);
+
+ return c1 - c2;
+}