1 files changed, 33 insertions, 0 deletions
diff --git a/gr-digital/python/utils/mod_codes.py b/gr-digital/python/utils/mod_codes.py
new file mode 100644
index 000000000..caacda5cc
--- /dev/null
+++ b/gr-digital/python/utils/mod_codes.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+#
+# Copyright 2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio 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 3, or (at your option)
+# any later version.
+# 
+# GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+GRAY_CODE = 'gray'
+SET_PARTITION_CODE = 'set-partition'
+NO_CODE = 'none'
+
+codes = (GRAY_CODE, SET_PARTITION_CODE, NO_CODE)
+
+def invert_code(code):
+    c = enumerate(code)
+    ic = [(b, a) for (a, b) in c]
+    ic.sort()
+    return [a for (b, a) in ic]