--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2009-02-08  Bruno Haible  <bruno@clisp.org>
 
+	New module 'unicase/toupper'.
+	* modules/unicase/toupper: New file.
+	* lib/unicase/toupper.c: New file.
+	* lib/unicase/simple-mapping.h: New file.
+
 	* lib/gen-uni-tables.c (output_simple_mapping_test): New function.
 	(mapping_table): New structure.
 	(output_simple_mapping): New function.

new file mode 100644
--- /dev/null
+++ b/lib/unicase/simple-mapping.h
@@ -0,0 +1,39 @@
+/* Simple case mapping for Unicode characters.
+   Copyright (C) 2002, 2006, 2009 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 3 of the License, 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+ucs4_t
+FUNC (ucs4_t uc)
+{
+  unsigned int index1 = uc >> mapping_header_0;
+  if (index1 < mapping_header_1)
+    {
+      int lookup1 = u_mapping.level1[index1];
+      if (lookup1 >= 0)
+	{
+	  unsigned int index2 = (uc >> mapping_header_2) & mapping_header_3;
+	  int lookup2 = u_mapping.level2[lookup1 + index2];
+	  if (lookup2 >= 0)
+	    {
+	      unsigned int index3 = (uc & mapping_header_4);
+	      int lookup3 = u_mapping.level3[lookup2 + index3];
+
+	      return uc + lookup3;
+	    }
+	}
+    }
+  return uc;
+}

new file mode 100644
--- /dev/null
+++ b/lib/unicase/toupper.c
@@ -0,0 +1,27 @@
+/* Uppercase mapping for Unicode characters (locale and context independent).
+   Copyright (C) 2002, 2006, 2009 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 3 of the License, 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unicase.h"
+
+/* Define u_mapping table.  */
+#include "toupper.h"
+
+#define FUNC uc_toupper
+#include "simple-mapping.h"

new file mode 100644
--- /dev/null
+++ b/modules/unicase/toupper
@@ -0,0 +1,25 @@
+Description:
+Uppercase mapping for Unicode characters (locale and context independent).
+
+Files:
+lib/unicase/toupper.c
+lib/unicase/toupper.h
+lib/unicase/simple-mapping.h
+
+Depends-on:
+unicase/base
+
+configure.ac:
+
+Makefile.am:
+lib_SOURCES += unicase/toupper.c
+
+Include:
+"unicase.h"
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
+