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src
FunctionSum.cc
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// -*- C++ -*-
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// $Id: FunctionSum.cc,v 1.3 2003/09/06 14:04:14 boudreau Exp $
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#include "
CLHEP/GenericFunctions/FunctionSum.hh
"
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#include <assert.h>
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namespace
Genfun {
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FUNCTION_OBJECT_IMP
(FunctionSum)
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FunctionSum
::
FunctionSum
(const
AbsFunction
*arg1, const
AbsFunction
*arg2):
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_arg1(arg1->clone()),
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_arg2(arg2->clone())
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{
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if
(arg1->dimensionality()!=arg2->dimensionality()) {
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std::cout
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<<
"Warning: dimension mismatch in function sum"
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<< std::endl;
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assert(0);
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}
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}
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FunctionSum::FunctionSum
(
const
FunctionSum
& right) :
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AbsFunction
(right),
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_arg1(right._arg1->clone()),
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_arg2(right._arg2->clone())
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{}
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unsigned
int
FunctionSum::dimensionality
()
const
{
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return
_arg1->
dimensionality
();
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}
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FunctionSum::~FunctionSum
()
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{
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delete
_arg1;
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delete
_arg2;
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}
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double
FunctionSum::operator ()
(
double
x)
const
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{
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return
(*_arg1)(x)+(*_arg2)(x);
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}
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double
FunctionSum::operator ()
(
const
Argument
& x)
const
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{
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return
(*_arg1)(x)+(*_arg2)(x);
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}
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Derivative
FunctionSum::partial
(
unsigned
int
index)
const
{
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const
AbsFunction
& fPrime = _arg1->
partial
(index) + _arg2->
partial
(index);
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return
Derivative
(&fPrime);
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}
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}
// namespace Genfun
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