Jpp
software
JTools
JDistance.hh
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#ifndef __JTOOLS__JDISTANCE__
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#define __JTOOLS__JDISTANCE__
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#include <limits>
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#include "
JLang/JClass.hh
"
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/**
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* \author mdejong
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*/
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namespace
JTOOLS
{}
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namespace
JPP
{
using namespace
JTOOLS
; }
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namespace
JTOOLS
{
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/**
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* Template class for distance evaluation.
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*
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* This class should be specialised for data types when the distance
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* between two values is not equal to the arithmetic minus operation.
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*/
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template
<
class
JAbscissa_t>
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struct
JDistance
{
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typedef
typename
JLANG::JClass<JAbscissa_t>::argument_type
argument_type
;
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/**
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* Get distance between values.
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*
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* The distance should be negative, zero or positive if the first value
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* is respectively larger, equal or smaller compared to the second value.
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*
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* \param first first value
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* \param second second value
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* \return distance
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*/
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inline
double
operator()
(
argument_type
first,
argument_type
second)
const
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{
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return
second - first;
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}
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static
double
precision
;
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};
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/**
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* Default precision.
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*/
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template
<
class
JAbscissa_t>
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double
JDistance<JAbscissa_t>::precision
= std::numeric_limits<double>::min();
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}
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#endif
JTOOLS::JDistance::operator()
double operator()(argument_type first, argument_type second) const
Get distance between values.
Definition:
JDistance.hh:39
JLANG::JClass::argument_type
JArgument< T >::argument_type argument_type
Definition:
JClass.hh:82
JPP
This name space includes all other name spaces (except KM3NETDAQ, KM3NET and ANTARES).
Definition:
JAAnetToolkit.hh:37
JTOOLS::JDistance::precision
static double precision
Default precision.
Definition:
JDistance.hh:44
JTOOLS::JDistance
Template class for distance evaluation.
Definition:
JDistance.hh:24
JTOOLS::JDistance::argument_type
JLANG::JClass< JAbscissa_t >::argument_type argument_type
Definition:
JDistance.hh:26
JClass.hh
JTOOLS
Auxiliary classes and methods for multi-dimensional interpolations and histograms.
Definition:
JAbstractCollection.hh:9
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