3 * Copyright 2007 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 #ifndef INCLUDED_GR_GLFSR_SOURCE_F_H
24 #define INCLUDED_GR_GLFSR_SOURCE_F_H
26 #include <gr_sync_block.h>
30 class gr_glfsr_source_f;
31 typedef boost::shared_ptr<gr_glfsr_source_f> gr_glfsr_source_f_sptr;
33 gr_glfsr_source_f_sptr gr_make_glfsr_source_f(int degree, bool repeat=true, int mask=0, int seed=1);
36 * \brief Galois LFSR pseudo-random source generating float outputs -1.0 - 1.0
39 class gr_glfsr_source_f : public gr_sync_block
42 friend gr_glfsr_source_f_sptr
43 gr_make_glfsr_source_f(int degree, bool repeat, int mask, int seed);
49 unsigned int d_length;
51 gr_glfsr_source_f(int degree, bool repeat, int mask, int seed);
57 int work(int noutput_items,
58 gr_vector_const_void_star &input_items,
59 gr_vector_void_star &output_items);
61 unsigned int period() const { return d_length; }
65 #endif /* INCLUDED_GR_GLFSR_SOURCE_F_H */