diff options
author | scuri <scuri> | 2009-08-20 12:35:06 +0000 |
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committer | scuri <scuri> | 2009-08-20 12:35:06 +0000 |
commit | 5d735255ddd3cb2f547abd3d03969af3fb7eb04e (patch) | |
tree | 8fb66510bc625bb1b08ccb41f1b83fb0f7cb8f19 /src/fftw3/dft/indirect.c | |
parent | 35733b87eed86e5228f12fa10c98a3d9d22a6073 (diff) |
*** empty log message ***
Diffstat (limited to 'src/fftw3/dft/indirect.c')
-rw-r--r-- | src/fftw3/dft/indirect.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/src/fftw3/dft/indirect.c b/src/fftw3/dft/indirect.c deleted file mode 100644 index e00eabf..0000000 --- a/src/fftw3/dft/indirect.c +++ /dev/null @@ -1,238 +0,0 @@ -/* - * Copyright (c) 2003 Matteo Frigo - * Copyright (c) 2003 Massachusetts Institute of Technology - * - * This program 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 2 of the License, or - * (at your option) any later version. - * - * This program 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, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -/* $Id: indirect.c,v 1.1 2008/10/17 06:11:08 scuri Exp $ */ - - -/* solvers/plans for vectors of small DFT's that cannot be done - in-place directly. Use a rank-0 plan to rearrange the data - before or after the transform. Can also change an out-of-place - plan into a copy + in-place (where the in-place transform - is e.g. unit stride). */ - -/* FIXME: merge with rank-geq2.c(?), since this is just a special case - of a rank split where the first/second transform has rank 0. */ - -#include "dft.h" - -typedef problem *(*mkcld_t) (const problem_dft *p); - -typedef struct { - dftapply apply; - problem *(*mkcld)(const problem_dft *p); - const char *nam; -} ndrct_adt; - -typedef struct { - solver super; - const ndrct_adt *adt; -} S; - -typedef struct { - plan_dft super; - plan *cldcpy, *cld; - const S *slv; -} P; - -/*-----------------------------------------------------------------------*/ -/* first rearrange, then transform */ -static void apply_before(const plan *ego_, R *ri, R *ii, R *ro, R *io) -{ - const P *ego = (const P *) ego_; - - { - plan_dft *cldcpy = (plan_dft *) ego->cldcpy; - cldcpy->apply(ego->cldcpy, ri, ii, ro, io); - } - { - plan_dft *cld = (plan_dft *) ego->cld; - cld->apply(ego->cld, ro, io, ro, io); - } -} - -static problem *mkcld_before(const problem_dft *p) -{ - return X(mkproblem_dft_d)(X(tensor_copy_inplace)(p->sz, INPLACE_OS), - X(tensor_copy_inplace)(p->vecsz, INPLACE_OS), - p->ro, p->io, p->ro, p->io); -} - -static const ndrct_adt adt_before = -{ - apply_before, mkcld_before, "dft-indirect-before" -}; - -/*-----------------------------------------------------------------------*/ -/* first transform, then rearrange */ - -static void apply_after(const plan *ego_, R *ri, R *ii, R *ro, R *io) -{ - const P *ego = (const P *) ego_; - - { - plan_dft *cld = (plan_dft *) ego->cld; - cld->apply(ego->cld, ri, ii, ri, ii); - } - { - plan_dft *cldcpy = (plan_dft *) ego->cldcpy; - cldcpy->apply(ego->cldcpy, ri, ii, ro, io); - } -} - -static problem *mkcld_after(const problem_dft *p) -{ - return X(mkproblem_dft_d)(X(tensor_copy_inplace)(p->sz, INPLACE_IS), - X(tensor_copy_inplace)(p->vecsz, INPLACE_IS), - p->ri, p->ii, p->ri, p->ii); -} - -static const ndrct_adt adt_after = -{ - apply_after, mkcld_after, "dft-indirect-after" -}; - -/*-----------------------------------------------------------------------*/ -static void destroy(plan *ego_) -{ - P *ego = (P *) ego_; - X(plan_destroy_internal)(ego->cld); - X(plan_destroy_internal)(ego->cldcpy); -} - -static void awake(plan *ego_, int flg) -{ - P *ego = (P *) ego_; - AWAKE(ego->cldcpy, flg); - AWAKE(ego->cld, flg); -} - -static void print(const plan *ego_, printer *p) -{ - const P *ego = (const P *) ego_; - const S *s = ego->slv; - p->print(p, "(%s%(%p%)%(%p%))", s->adt->nam, ego->cld, ego->cldcpy); -} - -static int applicable0(const solver *ego_, const problem *p_, - const planner *plnr) -{ - if (DFTP(p_)) { - const S *ego = (const S *) ego_; - const problem_dft *p = (const problem_dft *) p_; - return (1 - && FINITE_RNK(p->vecsz->rnk) - - /* problem must be a nontrivial transform, not just a copy */ - && p->sz->rnk > 0 - - && (0 - - /* problem must be in-place & require some - rearrangement of the data */ - || (p->ri == p->ro - && !(X(tensor_inplace_strides2)(p->sz, p->vecsz))) - - /* or problem must be out of place, transforming - from stride 1/2 to bigger stride, for apply_after */ - || (p->ri != p->ro && ego->adt->apply == apply_after - && DESTROY_INPUTP(plnr) - && X(tensor_min_istride)(p->sz) <= 2 - && X(tensor_min_ostride)(p->sz) > 2) - - /* or problem must be out of place, transforming - to stride 1/2 from bigger stride, for apply_before */ - || (p->ri != p->ro && ego->adt->apply == apply_before - && X(tensor_min_ostride)(p->sz) <= 2 - && X(tensor_min_istride)(p->sz) > 2) - ) - ); - } - - return 0; -} - -static int applicable(const solver *ego_, const problem *p_, - const planner *plnr) -{ - if (!applicable0(ego_, p_, plnr)) return 0; - { - const problem_dft *p = (const problem_dft *) p_; - if (NO_INDIRECT_OP_P(plnr) && p->ri != p->ro) return 0; - } - return 1; -} - -static plan *mkplan(const solver *ego_, const problem *p_, planner *plnr) -{ - const problem_dft *p = (const problem_dft *) p_; - const S *ego = (const S *) ego_; - P *pln; - plan *cld = 0, *cldcpy = 0; - - static const plan_adt padt = { - X(dft_solve), awake, print, destroy - }; - - if (!applicable(ego_, p_, plnr)) - return (plan *) 0; - - plnr->planner_flags |= NO_BUFFERING; - - cldcpy = X(mkplan_d)(plnr, - X(mkproblem_dft_d)(X(mktensor_0d)(), - X(tensor_append)(p->vecsz, p->sz), - p->ri, p->ii, p->ro, p->io)); - if (!cldcpy) goto nada; - - cld = X(mkplan_d)(plnr, ego->adt->mkcld(p)); - if (!cld) goto nada; - - pln = MKPLAN_DFT(P, &padt, ego->adt->apply); - pln->cld = cld; - pln->cldcpy = cldcpy; - pln->slv = ego; - X(ops_add)(&cld->ops, &cldcpy->ops, &pln->super.super.ops); - - return &(pln->super.super); - - nada: - X(plan_destroy_internal)(cld); - X(plan_destroy_internal)(cldcpy); - return (plan *)0; -} - -static solver *mksolver(const ndrct_adt *adt) -{ - static const solver_adt sadt = { mkplan }; - S *slv = MKSOLVER(S, &sadt); - slv->adt = adt; - return &(slv->super); -} - -void X(dft_indirect_register)(planner *p) -{ - unsigned i; - static const ndrct_adt *const adts[] = { - &adt_before, &adt_after - }; - - for (i = 0; i < sizeof(adts) / sizeof(adts[0]); ++i) - REGISTER_SOLVER(p, mksolver(adts[i])); -} |