mirror of
https://github.com/tildearrow/furnace.git
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121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
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* Copyright (c) 2003, 2007-14 Matteo Frigo
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* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "dft/dft.h"
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#include <stddef.h>
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static void destroy(problem *ego_)
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{
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problem_dft *ego = (problem_dft *) ego_;
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X(tensor_destroy2)(ego->vecsz, ego->sz);
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X(ifree)(ego_);
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}
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static void hash(const problem *p_, md5 *m)
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{
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const problem_dft *p = (const problem_dft *) p_;
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X(md5puts)(m, "dft");
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X(md5int)(m, p->ri == p->ro);
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X(md5INT)(m, p->ii - p->ri);
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X(md5INT)(m, p->io - p->ro);
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X(md5int)(m, X(ialignment_of)(p->ri));
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X(md5int)(m, X(ialignment_of)(p->ii));
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X(md5int)(m, X(ialignment_of)(p->ro));
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X(md5int)(m, X(ialignment_of)(p->io));
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X(tensor_md5)(m, p->sz);
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X(tensor_md5)(m, p->vecsz);
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}
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static void print(const problem *ego_, printer *p)
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{
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const problem_dft *ego = (const problem_dft *) ego_;
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p->print(p, "(dft %d %d %d %D %D %T %T)",
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ego->ri == ego->ro,
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X(ialignment_of)(ego->ri),
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X(ialignment_of)(ego->ro),
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(INT)(ego->ii - ego->ri),
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(INT)(ego->io - ego->ro),
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ego->sz,
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ego->vecsz);
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}
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static void zero(const problem *ego_)
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{
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const problem_dft *ego = (const problem_dft *) ego_;
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tensor *sz = X(tensor_append)(ego->vecsz, ego->sz);
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X(dft_zerotens)(sz, UNTAINT(ego->ri), UNTAINT(ego->ii));
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X(tensor_destroy)(sz);
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}
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static const problem_adt padt =
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{
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PROBLEM_DFT,
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hash,
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zero,
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print,
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destroy
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};
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problem *X(mkproblem_dft)(const tensor *sz, const tensor *vecsz,
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R *ri, R *ii, R *ro, R *io)
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{
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problem_dft *ego;
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/* enforce pointer equality if untainted pointers are equal */
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if (UNTAINT(ri) == UNTAINT(ro))
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ri = ro = JOIN_TAINT(ri, ro);
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if (UNTAINT(ii) == UNTAINT(io))
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ii = io = JOIN_TAINT(ii, io);
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/* more correctness conditions: */
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A(TAINTOF(ri) == TAINTOF(ii));
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A(TAINTOF(ro) == TAINTOF(io));
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A(X(tensor_kosherp)(sz));
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A(X(tensor_kosherp)(vecsz));
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if (ri == ro || ii == io) {
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/* If either real or imag pointers are in place, both must be. */
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if (ri != ro || ii != io || !X(tensor_inplace_locations)(sz, vecsz))
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return X(mkproblem_unsolvable)();
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}
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ego = (problem_dft *)X(mkproblem)(sizeof(problem_dft), &padt);
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ego->sz = X(tensor_compress)(sz);
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ego->vecsz = X(tensor_compress_contiguous)(vecsz);
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ego->ri = ri;
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ego->ii = ii;
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ego->ro = ro;
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ego->io = io;
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A(FINITE_RNK(ego->sz->rnk));
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return &(ego->super);
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}
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/* Same as X(mkproblem_dft), but also destroy input tensors. */
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problem *X(mkproblem_dft_d)(tensor *sz, tensor *vecsz,
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R *ri, R *ii, R *ro, R *io)
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{
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problem *p = X(mkproblem_dft)(sz, vecsz, ri, ii, ro, io);
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X(tensor_destroy2)(vecsz, sz);
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return p;
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}
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