ComplexComparesAbs.hh
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ComplexComparesAbs.hh
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	#ifndef NPSTAT_COMPLEXCOMPARESABS_HH_
	#define NPSTAT_COMPLEXCOMPARESABS_HH_

	/*!
	// \file ComplexComparesAbs.hh
	//
	// \brief Ordering extended to complex numbers by comparing their magnitudes
	//
	// Author: I. Volobouev
	//
	// January 2012
	*/

	#include <cmath>
	#include <complex>

	namespace npstat {
	/**
	// This template compares two numbers. For simple numeric types
	// (int, double, etc) the numbers themselves are compared while
	// for std::complex<...> types absolute values are compared.
	*/
	template <class T>
	struct ComplexComparesAbs
	{
	inline static bool less(const T& l, const T& r)
	{return l < r;}

	inline static bool more(const T& l, const T& r)
	{return l > r;}
	};

	template <class T>
	struct ComplexComparesAbs<std::complex<T> >
	{
	inline static bool less(const std::complex<T>& l,
	const std::complex<T>& r)
	{return std::abs(l) < std::abs(r);}

	inline static bool more(const std::complex<T>& l,
	const std::complex<T>& r)
	{return std::abs(l) > std::abs(l);}
	};
	}

	#endif // NPSTAT_COMPLEXCOMPARESABS_HH_