1 files changed, 39 insertions, 0 deletions
diff --git a/libs/cassowary/cassowary/ClConstraintHash.h b/libs/cassowary/cassowary/ClConstraintHash.h
new file mode 100644
index 0000000000..9d51fad311
--- /dev/null
+++ b/libs/cassowary/cassowary/ClConstraintHash.h
@@ -0,0 +1,39 @@
+// $Id$
+//
+// Cassowary Incremental Constraint Solver
+// Original Smalltalk Implementation by Alan Borning
+// This C++ Implementation by Greg J. Badros, <gjb@cs.washington.edu>
+// http://www.cs.washington.edu/homes/gjb
+// (C) 1998, 1999 Greg J. Badros and Alan Borning
+// See ../LICENSE for legal details regarding this software
+//
+// ClHash.h
+
+#ifndef CL_HASH_H__
+#define CL_HASH_H__
+
+#if defined(HAVE_CONFIG_H) && !defined(CONFIG_H_INCLUDED) && !defined(CONFIG_INLINE_H_INCLUDED)
+#include <cassowary/config-inline.h>
+#define CONFIG_INLINE_H_INCLUDED
+#endif
+
+#ifdef CL_USE_HASH_MAP_AND_SET
+
+#include <hash_map>
+
+class ClConstraint;
+
+struct hash<const ClConstraint *> {
+  size_t operator()(const ClConstraint * const p) const 
+    { return size_t((unsigned long)p/CL_PTR_HASH_DIVISOR); }
+};
+
+struct hash<ClConstraint *> {
+  size_t operator()(ClConstraint * const p) const 
+    { return size_t((unsigned long)p/CL_PTR_HASH_DIVISOR); }
+};
+
+#endif // CL_USE_HASH_MAP_AND_SET
+
+
+#endif