CoordinateSelector.hh
No OneTemporary
Actions

Size

1 KB

Referenced Files

None

Subscribers

None

CoordinateSelector.hh
View Options

	#ifndef NPSTAT_COORDINATESELECTOR_HH_
	#define NPSTAT_COORDINATESELECTOR_HH_

	/*!
	// \file CoordinateSelector.hh
	//
	// \brief Multidimensional functor which picks one of the elements
	// from an array of doubles
	//
	// Author: I. Volobouev
	//
	// August 2012
	*/

	#include <climits>
	#include <stdexcept>

	#include "npstat/nm/AbsMultivariateFunctor.hh"

	namespace npstat {
	/**
	// A trivial implementation of AbsMultivariateFunctor which selects
	// an element with a certain index from the input array
	*/
	class CoordinateSelector : public AbsMultivariateFunctor
	{
	public:
	inline explicit CoordinateSelector(const unsigned i) : index_(i) {}

	inline double operator()(const double* point, const unsigned dim) const
	{
	if (dim <= index_)
	throw std::invalid_argument(
	"In npstat::CoordinateSelector::operator(): "
	"input array dimensionality is too small");
	return point[index_];
	}
	inline unsigned minDim() const {return index_ + 1U;}
	inline unsigned maxDim() const {return UINT_MAX;}

	private:
	CoordinateSelector();
	unsigned index_;
	};
	}

	#endif // NPSTAT_COORDINATESELECTOR_HH_