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GenericFunctions/FunctionComposition.hh
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// -*- C++ -*-
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// $Id: FunctionComposition.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
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//--------------------------FunctionComposition-----------------------------//
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// //
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// FunctionComposition, result of composition of two functions. //
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// Joe Boudreau, Petar Maksimovic, November 1999 //
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// //
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//--------------------------------------------------------------------------//
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#ifndef FunctionComposition_h
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#define FunctionComposition_h 1
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#include "
CLHEP/GenericFunctions/AbsFunction.hh
"
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namespace
Genfun {
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class
FunctionComposition :
public
AbsFunction {
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FUNCTION_OBJECT_DEF
(
FunctionComposition
)
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public:
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// Constructor
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FunctionComposition
(const
AbsFunction
*arg1, const
AbsFunction
*arg2);
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// Copy constructor
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FunctionComposition
(const
FunctionComposition
&right);
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// Destructor
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virtual ~
FunctionComposition
();
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// Retreive function value
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virtual
double
operator ()(
double
argument) const;
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virtual
double
operator ()(const Argument &
a
) const;
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// Dimensionality
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virtual
unsigned
int
dimensionality
() const;
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// Derivative.
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Derivative
partial
(
unsigned
int
) const;
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// Does this function have an analytic derivative?
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virtual
bool
hasAnalyticDerivative
()
const
{
return
true
;}
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private
:
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// It is illegal to assign a FunctionComposition
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const
FunctionComposition
& operator=(
const
FunctionComposition
&right);
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const
AbsFunction
*_arg1;
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const
AbsFunction
*_arg2;
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};
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}
// namespace Genfun
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#endif
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