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muSpectre/src/fft/fft_engine_base.cc
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fft_engine_base.cc
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/**
* @file fft_engine_base.cc
*
* @author Till Junge <till.junge@altermail.ch>
*
* @date 03 Dec 2017
*
* @brief implementation for FFT engine base class
*
* Copyright © 2017 Till Junge
*
* µSpectre is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3, or (at
* your option) any later version.
*
* µSpectre 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Emacs; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "fft/fft_engine_base.hh"
namespace muSpectre {
/* ---------------------------------------------------------------------- */
template <Dim_t Dim>
FFTEngineBase<Dim>::FFTEngineBase(Ccoord resolutions,
Dim_t nb_components,
Communicator comm)
:comm{comm}, subdomain_resolutions{resolutions}, subdomain_locations{},
fourier_resolutions{CcoordOps::get_hermitian_sizes(resolutions)},
fourier_locations{}, domain_resolutions{resolutions},
work{make_field<Workspace_t>
("work space", work_space_container, nb_components)},
norm_factor{1./CcoordOps::get_size(domain_resolutions)},
nb_components{nb_components}
{}
/* ---------------------------------------------------------------------- */
template <Dim_t Dim>
void FFTEngineBase<Dim>::initialise(FFT_PlanFlags /*plan_flags*/) {
this->work_space_container.initialise();
}
/* ---------------------------------------------------------------------- */
template <Dim_t Dim>
size_t FFTEngineBase<Dim>::size() const {
return CcoordOps::get_size(this->subdomain_resolutions);
}
/* ---------------------------------------------------------------------- */
template <Dim_t Dim>
size_t FFTEngineBase<Dim>::workspace_size() const {
return this->work_space_container.size();
}
template class FFTEngineBase<twoD>;
template class FFTEngineBase<threeD>;
} // muSpectre
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