GNU Radio 3.5.1 C++ API
gr_random.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2002 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_GR_RANDOM_H
00024 #define INCLUDED_GR_RANDOM_H
00025 
00026 #include <gr_core_api.h>
00027 #include <gr_complex.h>
00028 
00029 /*!
00030  * \brief pseudo random number generator
00031  * \ingroup math_blk
00032  */
00033 class GR_CORE_API gr_random {
00034 protected:
00035   static const int NTAB  = 32;
00036   long  d_seed;
00037   long  d_iy;
00038   long  d_iv[NTAB];
00039   int   d_iset;
00040   float d_gset;
00041 
00042   
00043 public: 
00044   gr_random (long seed=3021);
00045 
00046   void reseed (long seed);
00047 
00048   /*!
00049    * \brief uniform random deviate in the range [0.0, 1.0)
00050    */
00051   float ran1 ();
00052 
00053   /*!
00054    * \brief normally distributed deviate with zero mean and variance 1
00055    */
00056   float gasdev ();
00057 
00058   float laplacian ();
00059   float impulse (float factor);
00060   float rayleigh ();
00061   gr_complex rayleigh_complex ();
00062 };
00063 
00064 #endif /* INCLUDED_GR_RANDOM_H */
00065