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product_function.hh
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rLIBMULTISCALE LibMultiScale
product_function.hh
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/**
* @file product_function.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date Mon Jan 07 16:36:30 2013
*
* @brief This allows to create a function based on the product between two
* other functions
*
* @section LICENSE
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* LibMultiScale is free software: you can redistribute it and/or modify it
* under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* LibMultiScale is distributed in the hope that it will be useful, but
* WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with LibMultiScale. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef __LIBMULTISCALE_PRODUCT_FUNCTION_HH__
#define __LIBMULTISCALE_PRODUCT_FUNCTION_HH__
/* -------------------------------------------------------------------------- */
#include "function_interface.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_LIBMULTISCALE__
/** Class ProductFunction
*
* This class permits to multiply to functions and get the proper derivatives
*/
template
<
typename
Function1
,
typename
Function2
>
class
ProductFunction
:
public
FunctionInterface
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
ProductFunction
(
Function1
&
f1
,
Function2
&
f2
)
:
func1
(
f1
),
func2
(
f2
){};
virtual
~
ProductFunction
(){};
template
<
UInt
derivation_order
,
bool
fps
=
true
>
class
myComputeFunctor
{
public
:
static
Real
compute
(
Real
x
,
Function1
&
func1
,
Function2
&
func2
);
};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
template
<
UInt
derivation_order
>
inline
Real
compute
(
Real
x
);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private
:
Function1
func1
;
Function2
func2
;
};
/* -------------------------------------------------------------------------- */
template
<
typename
Function1
,
typename
Function2
>
template
<
UInt
order
>
inline
Real
ProductFunction
<
Function1
,
Function2
>::
compute
(
Real
x
)
{
return
myComputeFunctor
<
order
>::
compute
(
x
,
func1
,
func2
);
}
/* -------------------------------------------------------------------------- */
template
<
typename
Function1
,
typename
Function2
>
template
<
UInt
derivation_order
,
bool
fps
>
inline
Real
ProductFunction
<
Function1
,
Function2
>::
myComputeFunctor
<
derivation_order
,
fps
>::
compute
(
Real
x
,
Function1
&
func1
,
Function2
&
func2
)
{
LM_TOIMPLEMENT
;
}
/* -------------------------------------------------------------------------- */
template
<
typename
Function1
,
typename
Function2
>
template
<
bool
fps
>
class
ProductFunction
<
Function1
,
Function2
>::
myComputeFunctor
<
0
,
fps
>
{
public
:
static
Real
compute
(
Real
x
,
Function1
&
func1
,
Function2
&
func2
)
{
return
func1
.
template
compute
<
0
>
(
x
)
*
func2
.
template
compute
<
0
>
(
x
);
}
};
/* -------------------------------------------------------------------------- */
template
<
typename
Function1
,
typename
Function2
>
template
<
bool
fps
>
class
ProductFunction
<
Function1
,
Function2
>::
myComputeFunctor
<
1
,
fps
>
{
public
:
static
Real
compute
(
Real
x
,
Function1
&
func1
,
Function2
&
func2
)
{
return
func1
.
template
compute
<
0
>
(
x
)
*
func2
.
template
compute
<
1
>
(
x
)
+
func1
.
template
compute
<
1
>
(
x
)
*
func2
.
template
compute
<
0
>
(
x
);
}
};
/* -------------------------------------------------------------------------- */
template
<
typename
Function1
,
typename
Function2
>
template
<
bool
fps
>
class
ProductFunction
<
Function1
,
Function2
>::
myComputeFunctor
<
2
,
fps
>
{
public
:
static
Real
compute
(
Real
x
,
Function1
&
func1
,
Function2
&
func2
)
{
return
func1
.
template
compute
<
0
>
(
x
)
*
func2
.
template
compute
<
2
>
(
x
)
+
2.
*
func1
.
template
compute
<
1
>
(
x
)
*
func2
.
template
compute
<
1
>
(
x
)
+
func1
.
template
compute
<
2
>
(
x
)
*
func2
.
template
compute
<
0
>
(
x
);
}
};
/* -------------------------------------------------------------------------- */
template
<
typename
Function1
,
typename
Function2
>
template
<
bool
fps
>
class
ProductFunction
<
Function1
,
Function2
>::
myComputeFunctor
<
3
,
fps
>
{
public
:
static
Real
compute
(
Real
x
,
Function1
&
func1
,
Function2
&
func2
)
{
return
func1
.
template
compute
<
0
>
(
x
)
*
func2
.
template
compute
<
3
>
(
x
)
+
3.
*
func1
.
template
compute
<
1
>
(
x
)
*
func2
.
template
compute
<
2
>
(
x
)
+
3.
*
func1
.
template
compute
<
2
>
(
x
)
*
func2
.
template
compute
<
1
>
(
x
)
+
func1
.
template
compute
<
3
>
(
x
)
*
func2
.
template
compute
<
0
>
(
x
);
}
};
/* -------------------------------------------------------------------------- */
__END_LIBMULTISCALE__
#endif
/* __LIBMULTISCALE_PRODUCT_FUNCTION_HH__ */
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