strcasecmp.c -> strcasecmp.c & strncasecmp.c

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@2013 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 59 insertions, 0 deletions

diff --git a/strncasecmp.c b/strncasecmp.c
new file mode 100644
index 000000000..7900b6e85
--- /dev/null
+++ b/strncasecmp.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 1991, 1992, 1995, 2002 Free Software Foundation, Inc.
+This file was part of the GNU C Library. Modified by kb@mail.tug.org to
+avoid glibc-isms. Modified by Vincent Lefevre (-> ISO C prototypes and
+mpfr_ prefix).
+
+This file 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 file 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 file; see the file COPYING.LIB.  If not, write
+to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#if !defined (__STDC__) || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+#ifndef const
+#define const
+#endif
+#endif
+
+#include <ctype.h>
+
+int mpfr_strncasecmp (const char *, const char *, size_t);
+
+/* Compare no more than N characters of strings 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
+mpfr_strncasecmp (const char *s1, const char *s2, size_t n)
+{
+  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 || n == 0)
+    return 0;
+
+  do
+    {
+      c1 = tolower (*p1++);
+      c2 = tolower (*p2++);
+      if (c1 == '\0' || c1 != c2)
+	return c1 - c2;
+    } while (--n > 0);
+
+  return c1 - c2;
+}