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/* -*- c++ -*- */
/*
* Copyright 2006 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_FEVAL_H
#define INCLUDED_GR_FEVAL_H
#include <gr_core_api.h>
#include <gr_complex.h>
/*!
* \brief base class for evaluating a function: double -> double
* \ingroup misc
*
* This class is designed to be subclassed in Python or C++
* and is callable from both places. It uses SWIG's
* "director" feature to implement the magic.
* It's slow. Don't use it in a performance critical path.
*
* Override eval to define the behavior.
* Use calleval to invoke eval (this kludge is required to allow a
* python specific "shim" to be inserted.
*/
class GR_CORE_API gr_feval_dd
{
protected:
/*!
* \brief override this to define the function
*/
virtual double eval(double x);
public:
gr_feval_dd() {}
virtual ~gr_feval_dd();
virtual double calleval(double x); // invoke "eval"
};
/*!
* \brief base class for evaluating a function: complex -> complex
* \ingroup misc
*
* This class is designed to be subclassed in Python or C++
* and is callable from both places. It uses SWIG's
* "director" feature to implement the magic.
* It's slow. Don't use it in a performance critical path.
*
* Override eval to define the behavior.
* Use calleval to invoke eval (this kludge is required to allow a
* python specific "shim" to be inserted.
*/
class GR_CORE_API gr_feval_cc
{
protected:
/*!
* \brief override this to define the function
*/
virtual gr_complex eval(gr_complex x);
public:
gr_feval_cc() {}
virtual ~gr_feval_cc();
virtual gr_complex calleval(gr_complex x); // invoke "eval"
};
/*!
* \brief base class for evaluating a function: long -> long
* \ingroup misc
*
* This class is designed to be subclassed in Python or C++
* and is callable from both places. It uses SWIG's
* "director" feature to implement the magic.
* It's slow. Don't use it in a performance critical path.
*
* Override eval to define the behavior.
* Use calleval to invoke eval (this kludge is required to allow a
* python specific "shim" to be inserted.
*/
class GR_CORE_API gr_feval_ll
{
protected:
/*!
* \brief override this to define the function
*/
virtual long eval(long x);
public:
gr_feval_ll() {}
virtual ~gr_feval_ll();
virtual long calleval(long x); // invoke "eval"
};
/*!
* \brief base class for evaluating a function: void -> void
* \ingroup misc
*
* This class is designed to be subclassed in Python or C++
* and is callable from both places. It uses SWIG's
* "director" feature to implement the magic.
* It's slow. Don't use it in a performance critical path.
*
* Override eval to define the behavior.
* Use calleval to invoke eval (this kludge is required to allow a
* python specific "shim" to be inserted.
*/
class GR_CORE_API gr_feval
{
protected:
/*!
* \brief override this to define the function
*/
virtual void eval();
public:
gr_feval() {}
virtual ~gr_feval();
virtual void calleval(); // invoke "eval"
};
/*!
* \brief trivial examples / test cases showing C++ calling Python code
*/
GR_CORE_API double gr_feval_dd_example(gr_feval_dd *f, double x);
GR_CORE_API gr_complex gr_feval_cc_example(gr_feval_cc *f, gr_complex x);
GR_CORE_API long gr_feval_ll_example(gr_feval_ll *f, long x);
GR_CORE_API void gr_feval_example(gr_feval *f);
#endif /* INCLUDED_GR_FEVAL_H */
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