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src
ACos.cc
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// -*- C++ -*-
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// $Id: ACos.cc,v 1.4 2003/10/10 17:40:39 garren Exp $
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#include "
CLHEP/GenericFunctions/ACos.hh
"
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#include "
CLHEP/GenericFunctions/Sqrt.hh
"
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#include "
CLHEP/GenericFunctions/Square.hh
"
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#include <assert.h>
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#include <cmath>
// for acos()
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namespace
Genfun {
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FUNCTION_OBJECT_IMP
(ACos)
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ACos
::
ACos
()
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{}
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ACos::~ACos
() {
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}
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ACos::ACos
(
const
ACos
& right) :
AbsFunction
(right)
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{ }
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double
ACos::operator()
(
double
x)
const
{
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return
acos(x);
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}
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Derivative
ACos::partial
(
unsigned
int
index)
const
{
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assert(index==0);
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Square
square;
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Sqrt
root;
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const
AbsFunction
& fPrime = - 1.0/root(1.0-square) ;
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return
Derivative
(& fPrime);
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}
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}
// end namespace Genfun
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Genfun::ACos::operator()
virtual double operator()(double argument) const
Definition:
ACos.cc:22
Square.hh
Genfun::AbsFunction
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:48
ACos.hh
Genfun::ACos
Definition:
CLHEP/GenericFunctions/ACos.hh:15
Genfun::ACos::~ACos
virtual ~ACos()
Definition:
ACos.cc:15
Genfun::ACos::ACos
ACos()
Definition:
ACos.cc:12
Genfun::ACos::partial
Derivative partial(unsigned int) const
Definition:
ACos.cc:27
Genfun::Square
Definition:
CLHEP/GenericFunctions/Square.hh:19
Genfun::Derivative
FunctionNoop Derivative
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:40
Sqrt.hh
FUNCTION_OBJECT_IMP
#define FUNCTION_OBJECT_IMP(classname)
Definition:
CLHEP/GenericFunctions/AbsFunction.hh:156
Genfun::Sqrt
Definition:
CLHEP/GenericFunctions/Sqrt.hh:19
Genfun::FunctionNoop
Definition:
CLHEP/GenericFunctions/FunctionNoop.hh:19
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