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/*!
* \file
* \brief Implementation of numerical integration
* \author Tony Ottosson
*
* -------------------------------------------------------------------------
*
* Copyright (C) 1995-2010 (see AUTHORS file for a list of contributors)
*
* This file is part of IT++ - a C++ library of mathematical, signal
* processing, speech processing, and communications classes and functions.
*
* IT++ 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.
*
* IT++ 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 IT++. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include <itpp/base/math/integration.h>
//! \cond
namespace itpp
{
//wrapper to convert double(*f)(double) to function object
class Integrand_Wrapper
{
typedef double(*Ftn)(double);
Ftn _f;
public:
explicit Integrand_Wrapper(Ftn f): _f(f) {}
double operator()(double x) const {return _f(x);}
};
template double quad(Integrand_Wrapper, double, double, double);
template double quadl(Integrand_Wrapper, double, double, double);
//--------------------- quad() ----------------------------------------
double quad(double(*f)(double), double a, double b,
double tol)
{
return quad(Integrand_Wrapper(f), a, b, tol);
}
//--------------------- quadl() ----------------------------------------
double quadl(double(*f)(double), double a, double b, double tol)
{
return quadl(Integrand_Wrapper(f), a, b, tol);
}
} // namespace itpp
//! \endcond
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