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src
ATan.cc
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// -*- C++ -*-
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// $Id: ATan.cc,v 1.4 2003/10/10 17:40:39 garren Exp $
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#include "
CLHEP/GenericFunctions/ATan.hh
"
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#include "
CLHEP/GenericFunctions/Square.hh
"
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#include <assert.h>
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#include <cmath>
// for atan()
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namespace
Genfun {
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FUNCTION_OBJECT_IMP
(ATan)
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ATan
::
ATan
()
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{}
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ATan::~ATan
() {
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}
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ATan::ATan
(
const
ATan
& right) :
AbsFunction
(right)
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{ }
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double
ATan::operator()
(
double
x)
const
{
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return
atan(x);
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}
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Derivative
ATan::partial
(
unsigned
int
index)
const
{
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assert(index==0);
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Square
square;
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const
AbsFunction
& fPrime=1.0/(1.0+square);;
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return
Derivative
(& fPrime);
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}
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}
// end namespace Genfun
Genfun::ATan::partial
Derivative partial(unsigned int) const
Definition:
ATan.cc:27
Square.hh
Genfun::ATan::operator()
virtual double operator()(double argument) const
Definition:
ATan.cc:21
Genfun::AbsFunction
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:48
Genfun::ATan::ATan
ATan()
Definition:
ATan.cc:11
Genfun::ATan::~ATan
virtual ~ATan()
Definition:
ATan.cc:14
Genfun::Square
Definition:
CLHEP/GenericFunctions/Square.hh:19
Genfun::Derivative
FunctionNoop Derivative
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:40
ATan.hh
FUNCTION_OBJECT_IMP
#define FUNCTION_OBJECT_IMP(classname)
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:156
Genfun::FunctionNoop
Definition:
CLHEP/GenericFunctions/FunctionNoop.hh:19
Genfun::ATan
Definition:
CLHEP/GenericFunctions/ATan.hh:13
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