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diff --git a/gr-fec/lib/ber_tools.h b/gr-fec/lib/ber_tools.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2013-2014 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.
+ */
+
+#ifndef INCLUDED_GNURADIO_FEC_BER_TOOLS_H
+#define INCLUDED_GNURADIO_FEC_BER_TOOLS_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#define BERMINFRAMES (10000)
+#define BERMINERRORS (100)
+#define BERMAXBITS   (1000000000)
+
+/*!
+ * Add BPSK gaussian noise with standard deviation equal to sigma to a
+ * floating point input buffer.
+ *
+ * \param inbuffer (float*) buffer containing data to receive additive
+ *                 gaussian noise
+ * \param buffsize (int) size of \p inbuffer
+ * \param sigma    (float) noise power of the guassian random variables
+ */
+void gaussnoise(float *inbuffer, int buffsize, float sigma);
+
+/*!
+ * Compute the number of bit differences between input buffers
+ *
+ * \param inbuffer1 input stream 1 to compare against \p inbuffer2
+ * \param inbuffer2 input stream 2 to be compared against
+ * \param buffsize  number of elements in each buffer
+ */
+int compber(unsigned char *inbuffer1, unsigned char *inbuffer2, int buffsize);
+
+/*!
+ * Generate a random buffer of data
+ *
+ * \param databuffer pointer to buffer containing random data
+ * \param buffsize   number of elements in each buffer
+ */
+void randbuffer(unsigned char *databuffer, int buffsize, int charout);
+
+/*!
+ * Pack the character buffer
+ *
+ * \param databuffer pointer to buffer containing unpacked chars
+ * \param buffsize   number of elements in each buffer
+ */
+void char2bin(unsigned char *inbuffer, int buffsize);
+
+#endif  /* INCLUDED_GNURADIO_FEC_BER_TOOLS_H */
+
+