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test_integrate.cc
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Fri, Dec 6, 00:25
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rAKA akantu
test_integrate.cc
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/**
* Copyright (©) 2010-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* Akantu 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.
*
* Akantu 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 Akantu. If not, see <http://www.gnu.org/licenses/>.
*/
/* -------------------------------------------------------------------------- */
#include "test_fe_engine_fixture.hh"
/* -------------------------------------------------------------------------- */
#include <cstdlib>
#include <iostream>
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
TYPED_TEST
(
TestFEMFixture
,
IntegrateConstant
)
{
this
->
fem
->
initShapeFunctions
();
const
auto
type
=
this
->
type
;
const
auto
&
position
=
this
->
fem
->
getMesh
().
getNodes
();
Array
<
Real
>
const_val
(
position
.
size
(),
2
,
"const_val"
);
Array
<
Real
>
val_on_quad
(
this
->
nb_quadrature_points_total
,
2
,
"val_on_quad"
);
Vector
<
Real
>
value
{
1
,
2
};
for
(
auto
&&
const_
:
make_view
(
const_val
,
2
))
{
const_
=
value
;
}
// interpolate function on quadrature points
this
->
fem
->
interpolateOnIntegrationPoints
(
const_val
,
val_on_quad
,
2
,
type
);
// integrate function on elements
Array
<
Real
>
int_val_on_elem
(
this
->
nb_element
,
2
,
"int_val_on_elem"
);
this
->
fem
->
integrate
(
val_on_quad
,
int_val_on_elem
,
2
,
type
);
// get global integration value
Vector
<
Real
>
sum
{
0.
,
0.
};
for
(
auto
&&
int_
:
make_view
(
int_val_on_elem
,
2
))
{
sum
+=
int_
;
}
auto
diff
=
(
value
-
sum
).
lpNorm
<
Eigen
::
Infinity
>
();
EXPECT_NEAR
(
0
,
diff
,
1e-14
);
}
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