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/rdft/rank-geq2-rdft2.c | |
parent | 35733b87eed86e5228f12fa10c98a3d9d22a6073 (diff) |
*** empty log message ***
Diffstat (limited to 'src/fftw3/rdft/rank-geq2-rdft2.c')
-rw-r--r-- | src/fftw3/rdft/rank-geq2-rdft2.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/src/fftw3/rdft/rank-geq2-rdft2.c b/src/fftw3/rdft/rank-geq2-rdft2.c deleted file mode 100644 index c1809c9..0000000 --- a/src/fftw3/rdft/rank-geq2-rdft2.c +++ /dev/null @@ -1,243 +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: rank-geq2-rdft2.c,v 1.1 2008/10/17 06:11:29 scuri Exp $ */ - -/* plans for RDFT2 of rank >= 2 (multidimensional) */ - -#include "rdft.h" -#include "dft.h" - -typedef struct { - solver super; - int spltrnk; - const int *buddies; - int nbuddies; -} S; - -typedef struct { - plan_dft super; - plan *cldr, *cldc; - const S *solver; -} P; - -static void apply_r2hc(const plan *ego_, R *r, R *rio, R *iio) -{ - const P *ego = (const P *) ego_; - - { - plan_rdft2 *cldr = (plan_rdft2 *) ego->cldr; - cldr->apply((plan *) cldr, r, rio, iio); - } - - { - plan_dft *cldc = (plan_dft *) ego->cldc; - cldc->apply((plan *) cldc, rio, iio, rio, iio); - } -} - -static void apply_hc2r(const plan *ego_, R *r, R *rio, R *iio) -{ - const P *ego = (const P *) ego_; - - { - plan_dft *cldc = (plan_dft *) ego->cldc; - cldc->apply((plan *) cldc, iio, rio, iio, rio); - } - - { - plan_rdft2 *cldr = (plan_rdft2 *) ego->cldr; - cldr->apply((plan *) cldr, r, rio, iio); - } - -} - -static void awake(plan *ego_, int flg) -{ - P *ego = (P *) ego_; - AWAKE(ego->cldr, flg); - AWAKE(ego->cldc, flg); -} - -static void destroy(plan *ego_) -{ - P *ego = (P *) ego_; - X(plan_destroy_internal)(ego->cldr); - X(plan_destroy_internal)(ego->cldc); -} - -static void print(const plan *ego_, printer *p) -{ - const P *ego = (const P *) ego_; - const S *s = ego->solver; - p->print(p, "(rdft2-rank>=2/%d%(%p%)%(%p%))", - s->spltrnk, ego->cldr, ego->cldc); -} - -static int picksplit(const S *ego, const tensor *sz, int *rp) -{ - A(sz->rnk > 1); /* cannot split rnk <= 1 */ - if (!X(pickdim)(ego->spltrnk, ego->buddies, ego->nbuddies, sz, 1, rp)) - return 0; - *rp += 1; /* convert from dim. index to rank */ - if (*rp >= sz->rnk) /* split must reduce rank */ - return 0; - return 1; -} - -static int applicable0(const solver *ego_, const problem *p_, int *rp, - const planner *plnr) -{ - if (RDFT2P(p_)) { - const problem_rdft2 *p = (const problem_rdft2 *) p_; - const S *ego = (const S *)ego_; - return (1 - && p->sz->rnk >= 2 - && picksplit(ego, p->sz, rp) - && (0 - - /* can work out-of-place, but HC2R destroys input */ - || (p->r != p->rio && p->r != p->iio && - (p->kind == R2HC || DESTROY_INPUTP(plnr))) - - /* FIXME: what are sufficient conditions for inplace? */ - || (!(p->r != p->rio && p->r != p->iio)) - ) - ); - } - - return 0; -} - -/* TODO: revise this. */ -static int applicable(const solver *ego_, const problem *p_, - const planner *plnr, int *rp) -{ - const S *ego = (const S *)ego_; - - if (!applicable0(ego_, p_, rp, plnr)) return 0; - - /* fixed spltrnk (unlike fftw2's spltrnk=1, default buddies[0] is - spltrnk=0, which is an asymptotic "theoretical optimum" for - an ideal cache; it's equivalent to spltrnk=1 for rnk < 4). */ - if (NO_RANK_SPLITSP(plnr) && (ego->spltrnk != ego->buddies[0])) - return 0; - - if (NO_UGLYP(plnr)) { - const problem_rdft2 *p = (const problem_rdft2 *) p_; - - /* Heuristic: if the vector stride is greater than the transform - sz, don't use (prefer to do the vector loop first with a - vrank-geq1 plan). */ - if (p->vecsz->rnk > 0 && - X(tensor_min_stride)(p->vecsz) - > X(rdft2_tensor_max_index)(p->sz, p->kind)) - return 0; - } - - return 1; -} - -static plan *mkplan(const solver *ego_, const problem *p_, planner *plnr) -{ - const S *ego = (const S *) ego_; - const problem_rdft2 *p; - P *pln; - plan *cldr = 0, *cldc = 0; - tensor *sz1, *sz2, *vecszi, *sz2i; - int spltrnk; - inplace_kind k; - problem *cldp; - - static const plan_adt padt = { - X(rdft2_solve), awake, print, destroy - }; - - if (!applicable(ego_, p_, plnr, &spltrnk)) - return (plan *) 0; - - p = (const problem_rdft2 *) p_; - X(tensor_split)(p->sz, &sz1, spltrnk, &sz2); - - k = p->kind == R2HC ? INPLACE_OS : INPLACE_IS; - vecszi = X(tensor_copy_inplace)(p->vecsz, k); - sz2i = X(tensor_copy_inplace)(sz2, k); - - /* complex data is ~half of real */ - sz2i->dims[sz2i->rnk - 1].n = sz2i->dims[sz2i->rnk - 1].n/2 + 1; - - cldr = X(mkplan_d)(plnr, - X(mkproblem_rdft2_d)(X(tensor_copy)(sz2), - X(tensor_append)(p->vecsz, sz1), - p->r, p->rio, p->iio, p->kind)); - if (!cldr) goto nada; - - if (p->kind == R2HC) - cldp = X(mkproblem_dft_d)(X(tensor_copy_inplace)(sz1, k), - X(tensor_append)(vecszi, sz2i), - p->rio, p->iio, p->rio, p->iio); - else /* HC2R must swap re/im parts to get IDFT */ - cldp = X(mkproblem_dft_d)(X(tensor_copy_inplace)(sz1, k), - X(tensor_append)(vecszi, sz2i), - p->iio, p->rio, p->iio, p->rio); - cldc = X(mkplan_d)(plnr, cldp); - if (!cldc) goto nada; - - pln = MKPLAN_RDFT2(P, &padt, p->kind == R2HC ? apply_r2hc : apply_hc2r); - - pln->cldr = cldr; - pln->cldc = cldc; - - pln->solver = ego; - X(ops_add)(&cldr->ops, &cldc->ops, &pln->super.super.ops); - - X(tensor_destroy4)(sz2i, vecszi, sz2, sz1); - - return &(pln->super.super); - - nada: - X(plan_destroy_internal)(cldr); - X(plan_destroy_internal)(cldc); - X(tensor_destroy4)(sz2i, vecszi, sz2, sz1); - return (plan *) 0; -} - -static solver *mksolver(int spltrnk, const int *buddies, int nbuddies) -{ - static const solver_adt sadt = { mkplan }; - S *slv = MKSOLVER(S, &sadt); - slv->spltrnk = spltrnk; - slv->buddies = buddies; - slv->nbuddies = nbuddies; - return &(slv->super); -} - -void X(rdft2_rank_geq2_register)(planner *p) -{ - int i; - static const int buddies[] = { 0, 1, -2 }; - - const int nbuddies = sizeof(buddies) / sizeof(buddies[0]); - - for (i = 0; i < nbuddies; ++i) - REGISTER_SOLVER(p, mksolver(buddies[i], buddies, nbuddies)); - - /* FIXME: Should we try more buddies? See also dft/rank-geq2. */ -} |