libMesh
examples
introduction
introduction_ex3
exact_solution.C
Go to the documentation of this file.
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// The libMesh Finite Element Library.
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// Copyright (C) 2002-2024 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// C++ Includes
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#include <math.h>
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// Mesh library includes
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#include "libmesh/libmesh_common.h"
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// Bring in everything from the libMesh namespace
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using namespace
libMesh
;
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Real
exact_solution
(
const
Real
x,
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const
Real
y,
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const
Real
z = 0.)
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{
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static
const
Real
pi
= acos(-1.);
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return
cos(.5*
pi
*x)*sin(.5*
pi
*y)*cos(.5*
pi
*z);
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}
exact_solution
Real exact_solution(const Real x, const Real y, const Real z=0.)
This is the exact solution that we are trying to obtain.
Definition:
exact_solution.C:43
libMesh
The libMesh namespace provides an interface to certain functionality in the library.
libMesh::Real
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real
Definition:
libmesh_common.h:143
libMesh::pi
const Real pi
.
Definition:
libmesh.h:274
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