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/*
Copyright (C) 2013 Marco Vassallo <gedeone-octave@users.sourceforge.net>
This program 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 of the License, or (at your option) any later
version.
This program 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
this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _EXPRESSION_OCTAVE_
#define _EXPRESSION_OCTAVE_
#include <dolfin.h>
#include <octave/oct.h>
#include <octave/oct-map.h>
#include <octave/ov-fcn-handle.h>
#include <octave/ov-fcn.h>
#include <octave/parse.h>
#include <octave/octave.h>
class expression : public dolfin::Expression
{
public:
expression() : dolfin::Expression() {}
expression (octave_fcn_handle & _f) :
dolfin::Expression (), f (new octave_fcn_handle (_f)) {}
expression (octave_fcn_handle & _f, std::size_t _n) :
dolfin::Expression (_n), f (new octave_fcn_handle (_f)) {}
~expression (void) { delete f; }
void eval (dolfin::Array<double>& values, const dolfin::Array<double>& x) const
{
octave_value_list b;
b.resize (x.size ());
for (std::size_t i = 0; i < x.size (); ++i)
b(i) = x[i];
octave_value_list tmp = feval (f->function_value (), b);
Array<double> res = tmp(0).array_value ();
for (std::size_t i = 0; i < values.size (); ++i)
values[i] = res(i);
}
private:
octave_fcn_handle * f;
};
#endif