1 files changed, 42 insertions, 0 deletions
diff --git a/lib/unictype/identsyntaxmap.h b/lib/unictype/identsyntaxmap.h
new file mode 100644
index 0000000..5d9db39
--- /dev/null
+++ b/lib/unictype/identsyntaxmap.h
@@ -0,0 +1,42 @@
+/* Three-level bitmap lookup.
+   Copyright (C) 2000-2002, 2005-2007 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2000-2002.
+
+   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/>.  */
+
+static inline int identsyntax_lookup (ucs4_t uc);
+
+static inline int
+identsyntax_lookup (ucs4_t uc)
+{
+  unsigned int index1 = uc >> identsyntax_header_0;
+  if (index1 < identsyntax_header_1)
+    {
+      int lookup1 = TABLE.level1[index1];
+      if (lookup1 >= 0)
+	{
+	  unsigned int index2 = (uc >> identsyntax_header_2) & identsyntax_header_3;
+	  int lookup2 = TABLE.level2[lookup1 + index2];
+	  if (lookup2 >= 0)
+	    {
+	      unsigned int index3 = (uc & identsyntax_header_4) + lookup2;
+	      /* level3 contains 2-bit values.  */
+	      unsigned int lookup3 = TABLE.level3[index3 >> 3];
+
+	      return (lookup3 >> (2 * (index3 & 7))) & 3;
+	    }
+	}
+    }
+  return UC_IDENTIFIER_INVALID;
+}