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LatAnalyze/lib/Function.hpp

96 lines
3.1 KiB
C++

/*
* Function.hpp, part of LatAnalyze 3
*
* Copyright (C) 2013 - 2014 Antonin Portelli
*
* LatAnalyze 3 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.
*
* LatAnalyze 3 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 LatAnalyze 3. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef Latan_Function_hpp_
#define Latan_Function_hpp_
#include <LatAnalyze/Global.hpp>
#include <LatAnalyze/Mat.hpp>
#include <LatAnalyze/MatSample.hpp>
#include <functional>
#include <stack>
#include <vector>
BEGIN_NAMESPACE
/******************************************************************************
* Double function class *
******************************************************************************/
class DoubleFunction
{
private:
typedef std::function<double(const double *)> vecFunc;
public:
// constructor
explicit DoubleFunction(const Index nArg = 0,
const vecFunc &f = nullFunction_);
// destructor
virtual ~DoubleFunction(void) = default;
// access
virtual Index getNArg(void) const;
void setFunction(const vecFunc &f, const Index nArg);
// function call
virtual double operator()(const double *arg) const;
double operator()(const DVec &arg) const;
double operator()(const std::vector<double> &arg) const;
double operator()(std::stack<double> &arg) const;
double operator()(void) const;
template <typename... Ts>
double operator()(const double arg0, const Ts... args) const;
private:
// error checking
void checkSize(const Index nPar) const;
private:
std::shared_ptr<DVec> buffer_{nullptr};
vecFunc f_;
static const vecFunc nullFunction_;
};
template <typename... Ts>
double DoubleFunction::operator()(const double arg0, const Ts... args) const
{
static_assert(static_or<std::is_trivially_assignable<double, Ts>::value...>::value,
"DoubleFunction arguments are not compatible with double");
const double arg[] = {arg0, args...};
checkSize(sizeof...(args) + 1);
return (*this)(arg);
}
/******************************************************************************
* DoubleFunctionSample class *
******************************************************************************/
class DoubleFunctionSample: public Sample<DoubleFunction>
{
public:
// constructors
using Sample<DoubleFunction>::Sample;
// destructor
virtual ~DoubleFunctionSample(void) = default;
// function call
DSample operator()(const DMatSample &arg) const;
};
END_NAMESPACE
#endif // Latan_Function_hpp_