fnft__akns_discretization.h

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/*
 * This file is part of FNFT.
 *
 * FNFT is free software; you can redistribute it and/or
 * modify it under the terms of the version 2 of the GNU General
 * Public License as published by the Free Software Foundation.
 *
 * FNFT 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 this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * Contributors:
 * Sander Wahls (TU Delft) 2017-2018.
 * Shrinivas Chimmalgi (TU Delft) 2017.
 * Peter J. Prins (TU Delft) 2018, 2020-2021.
 */
 
#ifndef FNFT__AKNS_DISCRETIZATION_H
#define FNFT__AKNS_DISCRETIZATION_H
 
#include "fnft__akns_discretization_t.h"
#include "fnft__errwarn.h"
#include "fnft__misc.h"
 
 
FNFT_UINT fnft__akns_discretization_degree(fnft__akns_discretization_t
        discretization);
 
FNFT_REAL fnft__akns_discretization_boundary_coeff(fnft__akns_discretization_t discretization);
 
FNFT_UINT fnft__akns_discretization_upsampling_factor(fnft__akns_discretization_t discretization);
 
FNFT_UINT fnft__akns_discretization_method_order(fnft__akns_discretization_t discretization);
 
FNFT_INT fnft__akns_discretization_lambda_to_z(const FNFT_UINT n, const FNFT_REAL eps_t, 
        FNFT_COMPLEX * const vals, fnft__akns_discretization_t discretization);
 
FNFT_INT fnft__akns_discretization_z_to_lambda(const FNFT_UINT n, const FNFT_REAL eps_t, 
        FNFT_COMPLEX * const vals, fnft__akns_discretization_t discretization);
 
FNFT_INT fnft__akns_discretization_method_weights(FNFT_COMPLEX **qr_weights_ptr,
                                                  FNFT_COMPLEX **eps_t_weights_ptr,
                                                  fnft__akns_discretization_t const akns_discretization);
 
FNFT_INT fnft__akns_discretization_preprocess_signal(FNFT_UINT const D,
                                                     FNFT_COMPLEX const * const q,
                                                     FNFT_COMPLEX (*r_from_q[3])(FNFT_COMPLEX const),
                                                     FNFT_REAL const eps_t,
                                                     FNFT_UINT * const Dsub_ptr,
                                                     FNFT_COMPLEX **q_preprocessed_ptr,
                                                     FNFT_COMPLEX **r_preprocessed_ptr,
                                                     FNFT_UINT * const first_last_index,
                                                     fnft__akns_discretization_t discretization);
 
FNFT_INT fnft__akns_discretization_change_of_basis_matrix_to_S(FNFT_COMPLEX * const T,
                                                               FNFT_COMPLEX const xi,
                                                               FNFT_UINT  const derivative_flag, // 0- > 2x2, 1->4x4
                                                               FNFT_REAL const eps_t,
                                                               fnft__akns_discretization_t const akns_discretization,
                                                               FNFT_UINT vanilla_flag,
                                                               fnft__akns_pde_t const PDE);
 
FNFT_INT fnft__akns_discretization_change_of_basis_matrix_from_S(FNFT_COMPLEX * const T,
                                                                FNFT_COMPLEX const xi,
                                                                FNFT_UINT  const derivative_flag, // 0- > 2x2, 1->4x4
                                                                FNFT_REAL const eps_t,
                                                                fnft__akns_discretization_t const akns_discretization,
                                                                FNFT_UINT vanilla_flag,
                                                                fnft__akns_pde_t const PDE);
 
#ifdef FNFT_ENABLE_SHORT_NAMES
#define akns_discretization_degree(...) fnft__akns_discretization_degree(__VA_ARGS__)
#define akns_discretization_boundary_coeff(...) fnft__akns_discretization_boundary_coeff(__VA_ARGS__)
#define akns_discretization_upsampling_factor(...) fnft__akns_discretization_upsampling_factor(__VA_ARGS__)
#define akns_discretization_method_order(...) fnft__akns_discretization_method_order(__VA_ARGS__)
#define akns_discretization_lambda_to_z(...) fnft__akns_discretization_lambda_to_z(__VA_ARGS__)
#define akns_discretization_z_to_lambda(...) fnft__akns_discretization_z_to_lambda(__VA_ARGS__)
#define akns_discretization_method_weights(...) fnft__akns_discretization_method_weights(__VA_ARGS__)
#define akns_discretization_preprocess_signal(...) fnft__akns_discretization_preprocess_signal(__VA_ARGS__)
#define akns_discretization_change_of_basis_matrix_to_S(...) fnft__akns_discretization_change_of_basis_matrix_to_S(__VA_ARGS__)
#define akns_discretization_change_of_basis_matrix_from_S(...) fnft__akns_discretization_change_of_basis_matrix_from_S(__VA_ARGS__)
#endif
 
#endif