diff src/fftw-3.3.3/genfft/unique.ml @ 10:37bf6b4a2645

Add FFTW3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.3/genfft/unique.ml	Wed Mar 20 15:35:50 2013 +0000
@@ -0,0 +1,38 @@
+(*
+ * Copyright (c) 1997-1999 Massachusetts Institute of Technology
+ * Copyright (c) 2003, 2007-11 Matteo Frigo
+ * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
+ *
+ * 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 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 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *)
+
+(* repository of unique tokens *)
+
+type unique = Unique of unit
+
+(* this depends on the compiler not being too smart *)
+let make () =
+  let make_aux x = Unique x in
+  make_aux ()
+
+(* note that the obvious definition
+
+      let make () = Unique ()
+
+   fails *)
+
+let same (a : unique) (b : unique) =
+  (a == b)