[putenv]: Undefine before including system headers.

[gnulib.git] / lib / memcasecmp.c

diff --git a/lib/memcasecmp.c b/lib/memcasecmp.c
index 7e4ab75..a4d2e96 100644 (file)
--- a/lib/memcasecmp.c
+++ b/lib/memcasecmp.c
@@ -1,3 +1,22 @@
+/* Case-insensitive buffer comparator.
+   Copyright (C) 1996 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Jim Meyering (meyering@na-net.ornl.gov) */
+
 #ifdef HAVE_CONFIG_H
 # include <config.h>
 #endif
@@ -6,11 +25,11 @@
 #include <ctype.h>
 
 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-#define ISASCII(c) 1
+#define IN_CTYPE_DOMAIN(c) 1
 #else
-#define ISASCII(c) isascii(c)
+#define IN_CTYPE_DOMAIN(c) isascii(c)
 #endif
-#define ISUPPER(c) (ISASCII (c) && isupper (c))
+#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
 
 #if _LIBC || STDC_HEADERS
 # define TOLOWER(c) tolower (c)