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rLIBMULTISCALE LibMultiScale
quantity.hh
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/**
* @file quantity.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date Mon Nov 25 12:23:57 2013
*
* @brief This is a templated wrapper over float/doubles enabling units
* conversions
*
* @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_QUANTITY_HH__
#define __LIBMULTISCALE_QUANTITY_HH__
/* -------------------------------------------------------------------------- */
#include "lm_common.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_LIBMULTISCALE__
/* -------------------------------------------------------------------------- */
template
<
PhysicalQuantity
q
,
typename
T
=
Real
>
struct
PhysicalScalar
{
PhysicalScalar
(
T
v
)
:
val
(
v
)
{}
PhysicalScalar
(){};
operator
T
&
()
{
return
val
;
}
operator
const
T
&
()
const
{
return
val
;
}
template
<
typename
T2
>
bool
operator
<
(
const
T2
&
other
)
const
{
return
val
<
other
;
}
template
<
typename
T2
>
bool
operator
<=
(
const
T2
&
other
)
const
{
return
val
<=
other
;
}
template
<
typename
T2
>
bool
operator
>
(
const
T2
&
other
)
const
{
return
val
>
other
;
}
template
<
typename
T2
>
bool
operator
>=
(
const
T2
&
other
)
const
{
return
val
>=
other
;
}
T
val
;
};
using
PhysicalLength
=
PhysicalScalar
<
Length
>
;
/* -------------------------------------------------------------------------- */
template
<
PhysicalQuantity
q
,
typename
T
=
Real
>
bool
operator
<
(
const
T
&
a
,
const
PhysicalScalar
<
q
,
T
>
&
b
)
{
return
a
<
Real
(
b
);
}
template
<
PhysicalQuantity
q
,
typename
T
=
Real
>
bool
operator
<=
(
const
T
&
a
,
const
PhysicalScalar
<
q
,
T
>
&
b
)
{
return
a
<=
Real
(
b
);
}
template
<
PhysicalQuantity
q
,
typename
T
=
Real
>
bool
operator
>
(
const
T
&
a
,
const
PhysicalScalar
<
q
,
T
>
&
b
)
{
return
a
>
Real
(
b
);
}
template
<
PhysicalQuantity
q
,
typename
T
=
Real
>
bool
operator
>=
(
const
T
&
a
,
const
PhysicalScalar
<
q
,
T
>
&
b
)
{
return
a
>=
Real
(
b
);
}
template
<
PhysicalQuantity
q
,
typename
T
=
Real
>
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
os
,
PhysicalScalar
<
q
,
T
>
a
)
{
os
<<
a
.
val
;
switch
(
q
)
{
case
Length:
os
<<
" [Length]"
;
break
;
case
Mass:
os
<<
" [Mass]"
;
break
;
case
Energy:
os
<<
" [Energy]"
;
break
;
case
Time:
os
<<
" [Time]"
;
break
;
case
MassDensity:
os
<<
" [MassDensity]"
;
break
;
case
Force:
os
<<
" [Force]"
;
break
;
case
Pressure:
os
<<
" [Pressure]"
;
break
;
case
Temperature:
os
<<
" [Temperature]"
;
break
;
default
:
LM_FATAL
(
"unknown physical quantity "
<<
q
);
}
return
os
;
}
/* -------------------------------------------------------------------------- */
template
<
PhysicalQuantity
q
,
UInt
Dim
=
1
,
typename
T
=
Real
>
struct
Quantity
:
public
Vector
<
Dim
,
PhysicalScalar
<
q
,
T
>>
{
using
Vector
<
Dim
,
PhysicalScalar
<
q
,
T
>>::
Vector
;
using
Vector
<
Dim
,
PhysicalScalar
<
q
,
T
>>::
operator
=
;
Quantity
&
operator
=
(
Vector
<
Dim
,
T
>
&
v
)
{
for
(
UInt
i
=
0
;
i
<
Dim
;
++
i
)
(
*
this
)[
i
]
=
v
[
i
];
return
*
this
;
}
Quantity
&
operator
=
(
const
T
&
v
)
{
for
(
UInt
i
=
0
;
i
<
Dim
;
++
i
)
(
*
this
)[
i
]
=
v
;
return
*
this
;
}
template
<
UInt
other_Dim
>
operator
Quantity
<
q
,
other_Dim
,
T
>
()
{
LM_TOIMPLEMENT
;
};
operator
T
()
{
return
(
*
this
)[
0
];
}
};
/* -------------------------------------------------------------------------- */
template
<
PhysicalQuantity
q
,
typename
T
>
struct
Quantity
<
q
,
1
,
T
>
:
PhysicalScalar
<
q
,
T
>
{
using
PhysicalScalar
<
q
,
T
>::
PhysicalScalar
;
Quantity
&
operator
=
(
Vector
<
1
,
T
>
&
v
)
{
(
*
this
)[
0
]
=
v
[
0
];
return
(
*
this
);
};
const
T
&
operator
[](
UInt
i
)
const
{
return
*
this
;
};
T
&
operator
[](
UInt
i
)
{
return
*
this
;
};
template
<
UInt
other_Dim
>
operator
Quantity
<
q
,
other_Dim
,
T
>
&
()
{
LM_TOIMPLEMENT
;
};
};
/* -------------------------------------------------------------------------- */
__END_LIBMULTISCALE__
#endif
/* __LIBMULTISCALE_QUANTITY_HH__ */
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