cannam@167: /*
cannam@167:  * Copyright (c) 2003, 2007-14 Matteo Frigo
cannam@167:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
cannam@167:  *
cannam@167:  * This program is free software; you can redistribute it and/or modify
cannam@167:  * it under the terms of the GNU General Public License as published by
cannam@167:  * the Free Software Foundation; either version 2 of the License, or
cannam@167:  * (at your option) any later version.
cannam@167:  *
cannam@167:  * This program is distributed in the hope that it will be useful,
cannam@167:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@167:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@167:  * GNU General Public License for more details.
cannam@167:  *
cannam@167:  * You should have received a copy of the GNU General Public License
cannam@167:  * along with this program; if not, write to the Free Software
cannam@167:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@167:  *
cannam@167:  */
cannam@167: 
cannam@167: 
cannam@167: #include "dft/ct.h"
cannam@167: 
cannam@167: typedef struct {
cannam@167:      ct_solver super;
cannam@167:      const ct_desc *desc;
cannam@167:      kdftwsq k;
cannam@167: } S;
cannam@167: 
cannam@167: typedef struct {
cannam@167:      plan_dftw super;
cannam@167:      kdftwsq k;
cannam@167:      INT r;
cannam@167:      stride rs, vs;
cannam@167:      INT m, ms, v, mb, me;
cannam@167:      twid *td;
cannam@167:      const S *slv;
cannam@167: } P;
cannam@167: 
cannam@167: 
cannam@167: static void apply(const plan *ego_, R *rio, R *iio)
cannam@167: {
cannam@167:      const P *ego = (const P *) ego_;
cannam@167:      INT mb = ego->mb, ms = ego->ms;
cannam@167:      ego->k(rio + mb*ms, iio + mb*ms, ego->td->W, ego->rs, ego->vs,
cannam@167: 	    mb, ego->me, ms);
cannam@167: }
cannam@167: 
cannam@167: static void awake(plan *ego_, enum wakefulness wakefulness)
cannam@167: {
cannam@167:      P *ego = (P *) ego_;
cannam@167: 
cannam@167:      X(twiddle_awake)(wakefulness, &ego->td, ego->slv->desc->tw,
cannam@167: 		      ego->r * ego->m, ego->r, ego->m);
cannam@167: }
cannam@167: 
cannam@167: static void destroy(plan *ego_)
cannam@167: {
cannam@167:      P *ego = (P *) ego_;
cannam@167:      X(stride_destroy)(ego->rs);
cannam@167:      X(stride_destroy)(ego->vs);
cannam@167: }
cannam@167: 
cannam@167: static void print(const plan *ego_, printer *p)
cannam@167: {
cannam@167:      const P *ego = (const P *) ego_;
cannam@167:      const S *slv = ego->slv;
cannam@167:      const ct_desc *e = slv->desc;
cannam@167: 
cannam@167:      p->print(p, "(dftw-directsq-%D/%D%v \"%s\")",
cannam@167: 	      ego->r, X(twiddle_length)(ego->r, e->tw), ego->v, e->nam);
cannam@167: }
cannam@167: 
cannam@167: static int applicable(const S *ego,
cannam@167: 		      INT r, INT irs, INT ors,
cannam@167: 		      INT m, INT ms,
cannam@167: 		      INT v, INT ivs, INT ovs,
cannam@167: 		      INT mb, INT me,
cannam@167: 		      R *rio, R *iio,
cannam@167: 		      const planner *plnr)
cannam@167: {
cannam@167:      const ct_desc *e = ego->desc;
cannam@167:      UNUSED(v);
cannam@167: 
cannam@167:      return (
cannam@167: 	  1
cannam@167: 	  && r == e->radix
cannam@167: 
cannam@167: 	  /* transpose r, v */
cannam@167: 	  && r == v
cannam@167: 	  && irs == ovs
cannam@167: 	  && ivs == ors
cannam@167: 
cannam@167: 	  /* check for alignment/vector length restrictions */
cannam@167: 	  && e->genus->okp(e, rio, iio, irs, ivs, m, mb, me, ms, plnr)
cannam@167: 
cannam@167: 	  );
cannam@167: }
cannam@167: 
cannam@167: static plan *mkcldw(const ct_solver *ego_,
cannam@167: 		    INT r, INT irs, INT ors,
cannam@167: 		    INT m, INT ms,
cannam@167: 		    INT v, INT ivs, INT ovs,
cannam@167: 		    INT mstart, INT mcount,
cannam@167: 		    R *rio, R *iio,
cannam@167: 		    planner *plnr)
cannam@167: {
cannam@167:      const S *ego = (const S *) ego_;
cannam@167:      P *pln;
cannam@167:      const ct_desc *e = ego->desc;
cannam@167: 
cannam@167:      static const plan_adt padt = {
cannam@167: 	  0, awake, print, destroy
cannam@167:      };
cannam@167: 
cannam@167:      A(mstart >= 0 && mstart + mcount <= m);
cannam@167:      if (!applicable(ego,
cannam@167: 		     r, irs, ors, m, ms, v, ivs, ovs, mstart, mstart + mcount,
cannam@167: 		     rio, iio, plnr))
cannam@167:           return (plan *)0;
cannam@167: 
cannam@167:      pln = MKPLAN_DFTW(P, &padt, apply);
cannam@167: 
cannam@167:      pln->k = ego->k;
cannam@167:      pln->rs = X(mkstride)(r, irs);
cannam@167:      pln->vs = X(mkstride)(v, ivs);
cannam@167:      pln->td = 0;
cannam@167:      pln->r = r;
cannam@167:      pln->m = m;
cannam@167:      pln->ms = ms;
cannam@167:      pln->v = v;
cannam@167:      pln->mb = mstart;
cannam@167:      pln->me = mstart + mcount;
cannam@167:      pln->slv = ego;
cannam@167: 
cannam@167:      X(ops_zero)(&pln->super.super.ops);
cannam@167:      X(ops_madd2)(mcount/e->genus->vl, &e->ops, &pln->super.super.ops);
cannam@167: 
cannam@167:      return &(pln->super.super);
cannam@167: }
cannam@167: 
cannam@167: static void regone(planner *plnr, kdftwsq codelet,
cannam@167: 		   const ct_desc *desc, int dec)
cannam@167: {
cannam@167:      S *slv = (S *)X(mksolver_ct)(sizeof(S), desc->radix, dec, mkcldw, 0);
cannam@167:      slv->k = codelet;
cannam@167:      slv->desc = desc;
cannam@167:      REGISTER_SOLVER(plnr, &(slv->super.super));
cannam@167:      if (X(mksolver_ct_hook)) {
cannam@167: 	  slv = (S *)X(mksolver_ct_hook)(sizeof(S), desc->radix, dec,
cannam@167: 					 mkcldw, 0);
cannam@167: 	  slv->k = codelet;
cannam@167: 	  slv->desc = desc;
cannam@167: 	  REGISTER_SOLVER(plnr, &(slv->super.super));
cannam@167:      }
cannam@167: }
cannam@167: 
cannam@167: void X(regsolver_ct_directwsq)(planner *plnr, kdftwsq codelet,
cannam@167: 			       const ct_desc *desc, int dec)
cannam@167: {
cannam@167:      regone(plnr, codelet, desc, dec+TRANSPOSE);
cannam@167: }