1 files changed, 53 insertions, 0 deletions
diff --git a/gr-blocks/include/blocks/log2_const.h b/gr-blocks/include/blocks/log2_const.h
new file mode 100644
index 000000000..67d63810f
--- /dev/null
+++ b/gr-blocks/include/blocks/log2_const.h
@@ -0,0 +1,53 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2013 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.
+ */
+
+
+/*
+ * a bit of template hackery...
+ */
+#ifndef INCLUDED_BLOCKS_LOG2_CONST_H
+#define INCLUDED_BLOCKS_LOG2_CONST_H
+
+#include <blocks/api.h>
+#include <assert.h>
+
+namespace gr {
+  namespace blocks {
+
+    template<unsigned int k> static inline int log2_const() { assert(0); return 0; }
+
+    template<> inline int log2_const<1>()   { return 0; }
+    template<> inline int log2_const<2>()   { return 1; }
+    template<> inline int log2_const<4>()   { return 2; }
+    template<> inline int log2_const<8>()   { return 3; }
+    template<> inline int log2_const<16>()  { return 4; }
+    template<> inline int log2_const<32>()  { return 5; }
+    template<> inline int log2_const<64>()  { return 6; }
+    template<> inline int log2_const<128>() { return 7; }
+    template<> inline int log2_const<256>() { return 8; }
+    template<> inline int log2_const<512>() { return 9; }
+    template<> inline int log2_const<1024>(){ return 10; }
+
+  } /* namespace blocks */
+} /* namespace gr */
+
+#endif /* INCLUDED_BLOCKS_LOG2_CONST_H */