diff options
| author | Ben Reynwar <ben@reynwar.net> | 2013-05-19 02:55:33 -0700 |
|---|---|---|
| committer | Ben Reynwar <ben@reynwar.net> | 2013-05-19 02:55:33 -0700 |
| commit | bb01988e75d50d82cbb44c1a49c86c1d08f05665 (patch) | |
| tree | 0528dac14476d37f2cde7374a8fcb3428f879c69 /gnuradio-runtime/include/gnuradio/random.h | |
| parent | e4f0319eced22c112f7e6a4cc45bc2036d285332 (diff) | |
| parent | 0fa219774dcf9141ae91204f948c029b05673f3f (diff) | |
Merged in next_docs branch.
Diffstat (limited to 'gnuradio-runtime/include/gnuradio/random.h')
| -rw-r--r-- | gnuradio-runtime/include/gnuradio/random.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/gnuradio-runtime/include/gnuradio/random.h b/gnuradio-runtime/include/gnuradio/random.h new file mode 100644 index 0000000000..e01fcb7be7 --- /dev/null +++ b/gnuradio-runtime/include/gnuradio/random.h @@ -0,0 +1,81 @@ +/* -*- c++ -*- */ +/* + * Copyright 2002 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_GR_RANDOM_H +#define INCLUDED_GR_RANDOM_H + +#include <gnuradio/api.h> +#include <gnuradio/gr_complex.h> + +// While rand(3) specifies RAND_MAX, random(3) says that the output +// ranges from 0 to 2^31-1 but does not specify a macro to denote +// this. We define RANDOM_MAX for cleanliness. We must omit the +// definition for systems that have made the same choice. (Note that +// random(3) is from 4.2BSD, and not specified by POSIX.) + +#ifndef RANDOM_MAX +static const int RANDOM_MAX = 2147483647; // 2^31-1 +#endif /* RANDOM_MAX */ + +#include <stdlib.h> + +namespace gr { + + /*! + * \brief pseudo random number generator + * \ingroup math_blk + */ + class GR_RUNTIME_API random + { + protected: + static const int NTAB = 32; + long d_seed; + long d_iy; + long d_iv[NTAB]; + int d_iset; + float d_gset; + + public: + random(long seed=3021); + + void reseed(long seed); + + /*! + * \brief uniform random deviate in the range [0.0, 1.0) + */ + float ran1(); + + /*! + * \brief normally distributed deviate with zero mean and variance 1 + */ + float gasdev(); + + float laplacian(); + float impulse(float factor); + float rayleigh(); + gr_complex rayleigh_complex(); + }; + +} /* namespace gr */ + +#endif /* INCLUDED_GR_RANDOM_H */ + |