mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-10 14:55:06 +00:00
255 lines
6.2 KiB
C
255 lines
6.2 KiB
C
/*
|
|
* Copyright (c) 2003, 2007-14 Matteo Frigo
|
|
* Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
|
|
#include "dft/ct.h"
|
|
|
|
ct_solver *(*X(mksolver_ct_hook))(size_t, INT, int,
|
|
ct_mkinferior, ct_force_vrecursion) = 0;
|
|
|
|
typedef struct {
|
|
plan_dft super;
|
|
plan *cld;
|
|
plan *cldw;
|
|
INT r;
|
|
} P;
|
|
|
|
static void apply_dit(const plan *ego_, R *ri, R *ii, R *ro, R *io)
|
|
{
|
|
const P *ego = (const P *) ego_;
|
|
plan_dft *cld;
|
|
plan_dftw *cldw;
|
|
|
|
cld = (plan_dft *) ego->cld;
|
|
cld->apply(ego->cld, ri, ii, ro, io);
|
|
|
|
cldw = (plan_dftw *) ego->cldw;
|
|
cldw->apply(ego->cldw, ro, io);
|
|
}
|
|
|
|
static void apply_dif(const plan *ego_, R *ri, R *ii, R *ro, R *io)
|
|
{
|
|
const P *ego = (const P *) ego_;
|
|
plan_dft *cld;
|
|
plan_dftw *cldw;
|
|
|
|
cldw = (plan_dftw *) ego->cldw;
|
|
cldw->apply(ego->cldw, ri, ii);
|
|
|
|
cld = (plan_dft *) ego->cld;
|
|
cld->apply(ego->cld, ri, ii, ro, io);
|
|
}
|
|
|
|
static void awake(plan *ego_, enum wakefulness wakefulness)
|
|
{
|
|
P *ego = (P *) ego_;
|
|
X(plan_awake)(ego->cld, wakefulness);
|
|
X(plan_awake)(ego->cldw, wakefulness);
|
|
}
|
|
|
|
static void destroy(plan *ego_)
|
|
{
|
|
P *ego = (P *) ego_;
|
|
X(plan_destroy_internal)(ego->cldw);
|
|
X(plan_destroy_internal)(ego->cld);
|
|
}
|
|
|
|
static void print(const plan *ego_, printer *p)
|
|
{
|
|
const P *ego = (const P *) ego_;
|
|
p->print(p, "(dft-ct-%s/%D%(%p%)%(%p%))",
|
|
ego->super.apply == apply_dit ? "dit" : "dif",
|
|
ego->r, ego->cldw, ego->cld);
|
|
}
|
|
|
|
static int applicable0(const ct_solver *ego, const problem *p_, planner *plnr)
|
|
{
|
|
const problem_dft *p = (const problem_dft *) p_;
|
|
INT r;
|
|
|
|
return (1
|
|
&& p->sz->rnk == 1
|
|
&& p->vecsz->rnk <= 1
|
|
|
|
/* DIF destroys the input and we don't like it */
|
|
&& (ego->dec == DECDIT ||
|
|
p->ri == p->ro ||
|
|
!NO_DESTROY_INPUTP(plnr))
|
|
|
|
&& ((r = X(choose_radix)(ego->r, p->sz->dims[0].n)) > 1)
|
|
&& p->sz->dims[0].n > r);
|
|
}
|
|
|
|
|
|
int X(ct_applicable)(const ct_solver *ego, const problem *p_, planner *plnr)
|
|
{
|
|
const problem_dft *p;
|
|
|
|
if (!applicable0(ego, p_, plnr))
|
|
return 0;
|
|
|
|
p = (const problem_dft *) p_;
|
|
|
|
return (0
|
|
|| ego->dec == DECDIF+TRANSPOSE
|
|
|| p->vecsz->rnk == 0
|
|
|| !NO_VRECURSEP(plnr)
|
|
|| (ego->force_vrecursionp && ego->force_vrecursionp(ego, p))
|
|
);
|
|
}
|
|
|
|
|
|
static plan *mkplan(const solver *ego_, const problem *p_, planner *plnr)
|
|
{
|
|
const ct_solver *ego = (const ct_solver *) ego_;
|
|
const problem_dft *p;
|
|
P *pln = 0;
|
|
plan *cld = 0, *cldw = 0;
|
|
INT n, r, m, v, ivs, ovs;
|
|
iodim *d;
|
|
|
|
static const plan_adt padt = {
|
|
X(dft_solve), awake, print, destroy
|
|
};
|
|
|
|
if ((NO_NONTHREADEDP(plnr)) || !X(ct_applicable)(ego, p_, plnr))
|
|
return (plan *) 0;
|
|
|
|
p = (const problem_dft *) p_;
|
|
d = p->sz->dims;
|
|
n = d[0].n;
|
|
r = X(choose_radix)(ego->r, n);
|
|
m = n / r;
|
|
|
|
X(tensor_tornk1)(p->vecsz, &v, &ivs, &ovs);
|
|
|
|
switch (ego->dec) {
|
|
case DECDIT:
|
|
{
|
|
cldw = ego->mkcldw(ego,
|
|
r, m * d[0].os, m * d[0].os,
|
|
m, d[0].os,
|
|
v, ovs, ovs,
|
|
0, m,
|
|
p->ro, p->io, plnr);
|
|
if (!cldw) goto nada;
|
|
|
|
cld = X(mkplan_d)(plnr,
|
|
X(mkproblem_dft_d)(
|
|
X(mktensor_1d)(m, r * d[0].is, d[0].os),
|
|
X(mktensor_2d)(r, d[0].is, m * d[0].os,
|
|
v, ivs, ovs),
|
|
p->ri, p->ii, p->ro, p->io)
|
|
);
|
|
if (!cld) goto nada;
|
|
|
|
pln = MKPLAN_DFT(P, &padt, apply_dit);
|
|
break;
|
|
}
|
|
case DECDIF:
|
|
case DECDIF+TRANSPOSE:
|
|
{
|
|
INT cors, covs; /* cldw ors, ovs */
|
|
if (ego->dec == DECDIF+TRANSPOSE) {
|
|
cors = ivs;
|
|
covs = m * d[0].is;
|
|
/* ensure that we generate well-formed dftw subproblems */
|
|
/* FIXME: too conservative */
|
|
if (!(1
|
|
&& r == v
|
|
&& d[0].is == r * cors))
|
|
goto nada;
|
|
|
|
/* FIXME: allow in-place only for now, like in
|
|
fftw-3.[01] */
|
|
if (!(1
|
|
&& p->ri == p->ro
|
|
&& d[0].is == r * d[0].os
|
|
&& cors == d[0].os
|
|
&& covs == ovs
|
|
))
|
|
goto nada;
|
|
} else {
|
|
cors = m * d[0].is;
|
|
covs = ivs;
|
|
}
|
|
|
|
cldw = ego->mkcldw(ego,
|
|
r, m * d[0].is, cors,
|
|
m, d[0].is,
|
|
v, ivs, covs,
|
|
0, m,
|
|
p->ri, p->ii, plnr);
|
|
if (!cldw) goto nada;
|
|
|
|
cld = X(mkplan_d)(plnr,
|
|
X(mkproblem_dft_d)(
|
|
X(mktensor_1d)(m, d[0].is, r * d[0].os),
|
|
X(mktensor_2d)(r, cors, d[0].os,
|
|
v, covs, ovs),
|
|
p->ri, p->ii, p->ro, p->io)
|
|
);
|
|
if (!cld) goto nada;
|
|
|
|
pln = MKPLAN_DFT(P, &padt, apply_dif);
|
|
break;
|
|
}
|
|
|
|
default: A(0);
|
|
|
|
}
|
|
|
|
pln->cld = cld;
|
|
pln->cldw = cldw;
|
|
pln->r = r;
|
|
X(ops_add)(&cld->ops, &cldw->ops, &pln->super.super.ops);
|
|
|
|
/* inherit could_prune_now_p attribute from cldw */
|
|
pln->super.super.could_prune_now_p = cldw->could_prune_now_p;
|
|
return &(pln->super.super);
|
|
|
|
nada:
|
|
X(plan_destroy_internal)(cldw);
|
|
X(plan_destroy_internal)(cld);
|
|
return (plan *) 0;
|
|
}
|
|
|
|
ct_solver *X(mksolver_ct)(size_t size, INT r, int dec,
|
|
ct_mkinferior mkcldw,
|
|
ct_force_vrecursion force_vrecursionp)
|
|
{
|
|
static const solver_adt sadt = { PROBLEM_DFT, mkplan, 0 };
|
|
ct_solver *slv = (ct_solver *)X(mksolver)(size, &sadt);
|
|
slv->r = r;
|
|
slv->dec = dec;
|
|
slv->mkcldw = mkcldw;
|
|
slv->force_vrecursionp = force_vrecursionp;
|
|
return slv;
|
|
}
|
|
|
|
plan *X(mkplan_dftw)(size_t size, const plan_adt *adt, dftwapply apply)
|
|
{
|
|
plan_dftw *ego;
|
|
|
|
ego = (plan_dftw *) X(mkplan)(size, adt);
|
|
ego->apply = apply;
|
|
|
|
return &(ego->super);
|
|
}
|