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/* -*- 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 */
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