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-rw-r--r--src/fftw3/rdft/rgeneric.c371
1 files changed, 0 insertions, 371 deletions
diff --git a/src/fftw3/rdft/rgeneric.c b/src/fftw3/rdft/rgeneric.c
deleted file mode 100644
index ebc48e9..0000000
--- a/src/fftw3/rdft/rgeneric.c
+++ /dev/null
@@ -1,371 +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
- *
- */
-
-#include "rdft.h"
-
-typedef struct {
- solver super;
- rdft_kind kind;
-} S;
-
-typedef struct {
- plan_rdft super;
- plan *cld;
- twid *td;
- int os;
- int r, m;
- rdft_kind kind;
-} P;
-
-/***************************************************************************/
-
-static void apply_dit(const plan *ego_, R *I, R *O)
-{
- const P *ego = (const P *) ego_;
- int n, m, r;
- int i, j, k;
- int os, osm;
- E *buf;
- const R *W;
- R *X, *YO, *YI;
- E rsum, isum;
- int wp, wincr;
-
- {
- plan_rdft *cld = (plan_rdft *) ego->cld;
- cld->apply((plan *) cld, I, O);
- }
-
- r = ego->r;
-
- STACK_MALLOC(E *, buf, r * 2 * sizeof(E));
-
- osm = (m = ego->m) * (os = ego->os);
- n = m * r;
- W = ego->td->W;
-
- X = O;
- YO = O + r * osm;
- YI = O + osm;
-
- /* compute the transform of the r 0th elements (which are real) */
- for (i = 0; i + i < r; ++i) {
- rsum = K(0.0);
- isum = K(0.0);
- wincr = m * i;
- for (j = 0, wp = 0; j < r; ++j) {
- E tw_r = W[2*wp];
- E tw_i = W[2*wp+1] ;
- E re = X[j * osm];
- rsum += re * tw_r;
- isum += re * tw_i;
- wp += wincr;
- if (wp >= n)
- wp -= n;
- }
- buf[2*i] = rsum;
- buf[2*i+1] = isum;
- }
-
- /* store the transform back onto the A array */
- X[0] = buf[0];
- for (i = 1; i + i < r; ++i) {
- X[i * osm] = buf[2*i];
- YO[-i * osm] = buf[2*i+1];
- }
-
- X += os;
- YI -= os;
- YO -= os;
-
- /* compute the transform of the middle elements (which are complex) */
- for (k = 1; k + k < m; ++k, X += os, YI -= os, YO -= os) {
- for (i = 0; i < r; ++i) {
- rsum = K(0.0);
- isum = K(0.0);
- wincr = k + m * i;
- for (j = 0, wp = 0; j < r; ++j) {
- E tw_r = W[2*wp];
- E tw_i = W[2*wp+1] ;
- E re = X[j * osm];
- E im = YI[j * osm];
- rsum += re * tw_r - im * tw_i;
- isum += re * tw_i + im * tw_r;
- wp += wincr;
- if (wp >= n)
- wp -= n;
- }
- buf[2*i] = rsum;
- buf[2*i+1] = isum;
- }
-
- /* store the transform back onto the A array */
- for (i = 0; i + i < r; ++i) {
- X[i * osm] = buf[2*i];
- YO[-i * osm] = buf[2*i+1];
- }
- for (; i < r; ++i) {
- X[i * osm] = -buf[2*i+1];
- YO[-i * osm] = buf[2*i];
- }
- }
-
- /* no final element, since m is odd */
-
- STACK_FREE(buf);
-}
-
-static void apply_dif(const plan *ego_, R *I, R *O)
-{
- const P *ego = (const P *) ego_;
- int n, m, r;
- int i, j, k;
- int is, ism;
- E *buf;
- const R *W;
- R *X, *YO, *YI;
- E rsum, isum;
- int wp, wincr;
-
- r = ego->r;
-
- STACK_MALLOC(E *, buf, r * 2 * sizeof(E));
-
- ism = (m = ego->m) * (is = ego->os);
- n = m * r;
- W = ego->td->W;
-
- X = I;
- YI = I + r * ism;
- YO = I + ism;
-
- /*
- * compute the transform of the r 0th elements (which are halfcomplex)
- * yielding real numbers
- */
- /* copy the input into the temporary array */
- buf[0] = X[0];
- for (i = 1; i + i < r; ++i) {
- buf[2*i] = X[i * ism];
- buf[2*i+1] = YI[-i * ism];
- }
-
- for (i = 0; i < r; ++i) {
- rsum = K(0.0);
- wincr = m * i;
- for (j = 1, wp = wincr; j + j < r; ++j) {
- E tw_r = W[2*wp];
- E tw_i = W[2*wp+1];
- E re = buf[2*j];
- E im = buf[2*j+1];
- rsum += re * tw_r + im * tw_i;
- wp += wincr;
- if (wp >= n)
- wp -= n;
- }
- X[i * ism] = K(2.0) * rsum + buf[0];
- }
-
- X += is;
- YI -= is;
- YO -= is;
-
- /* compute the transform of the middle elements (which are complex) */
- for (k = 1; k + k < m; ++k, X += is, YI -= is, YO -= is) {
- /* copy the input into the temporary array */
- for (i = 0; i + i < r; ++i) {
- buf[2*i] = X[i * ism];
- buf[2*i+1] = YI[-i * ism];
- }
- for (; i < r; ++i) {
- buf[2*i+1] = -X[i * ism];
- buf[2*i] = YI[-i * ism];
- }
-
- for (i = 0; i < r; ++i) {
- rsum = K(0.0);
- isum = K(0.0);
- wincr = m * i;
- for (j = 0, wp = k * i; j < r; ++j) {
- E tw_r = W[2*wp];
- E tw_i = W[2*wp+1];
- E re = buf[2*j];
- E im = buf[2*j+1];
- rsum += re * tw_r + im * tw_i;
- isum += im * tw_r - re * tw_i;
- wp += wincr;
- if (wp >= n)
- wp -= n;
- }
- X[i * ism] = rsum;
- YO[i * ism] = isum;
- }
- }
-
- /* no final element, since m is odd */
-
- STACK_FREE(buf);
-
- {
- plan_rdft *cld = (plan_rdft *) ego->cld;
- cld->apply((plan *) cld, I, O);
- }
-
-}
-
-/***************************************************************************/
-
-static void awake(plan *ego_, int flg)
-{
- P *ego = (P *) ego_;
- static const tw_instr generic_tw[] = {
- { TW_GENERIC, 0, 0 },
- { TW_NEXT, 1, 0 }
- };
-
- AWAKE(ego->cld, flg);
- /* FIXME: can we get away with fewer twiddles? */
- X(twiddle_awake)(flg, &ego->td, generic_tw,
- ego->r * ego->m, ego->r, ego->m);
-}
-
-static void destroy(plan *ego_)
-{
- P *ego = (P *) ego_;
- X(plan_destroy_internal)(ego->cld);
-}
-
-static void print(const plan *ego_, printer *p)
-{
- const P *ego = (const P *) ego_;
-
- p->print(p, "(rdft-generic-%s-%d%(%p%))",
- ego->kind == R2HC ? "r2hc-dit" : "hc2r-dif",
- ego->r, ego->cld);
-}
-
-static int applicable0(const solver *ego_, const problem *p_)
-{
- if (RDFTP(p_)) {
- const S *ego = (const S *) ego_;
- const problem_rdft *p = (const problem_rdft *) p_;
- return (1
- && p->sz->rnk == 1
- && p->vecsz->rnk == 0
- && p->sz->dims[0].n > 1
- && p->sz->dims[0].n % 2 /* ensure r and n/r odd */
- && p->kind[0] == ego->kind
- );
- }
-
- return 0;
-}
-
-static int applicable(const solver *ego_, const problem *p_,
- const planner *plnr)
-{
- if (NO_UGLYP(plnr)) return 0; /* always ugly */
- if (!applicable0(ego_, p_)) return 0;
-
- if (NO_LARGE_GENERICP(plnr)) {
- const problem_rdft *p = (const problem_rdft *) p_;
- if (X(first_divisor)(p->sz->dims[0].n) >= GENERIC_MIN_BAD) return 0;
- }
- return 1;
-}
-
-static plan *mkplan(const solver *ego, const problem *p_, planner *plnr)
-{
- const problem_rdft *p = (const problem_rdft *) p_;
- P *pln = 0;
- int n, r, m;
- int is, os;
- plan *cld = (plan *) 0;
- problem *cldp;
-
- static const plan_adt padt = {
- X(rdft_solve), awake, print, destroy
- };
-
- if (!applicable(ego, p_, plnr))
- goto nada;
-
- n = p->sz->dims[0].n;
- is = p->sz->dims[0].is;
- os = p->sz->dims[0].os;
-
- r = X(first_divisor)(n);
- m = n / r;
-
- if (R2HC_KINDP(p->kind[0])) {
- cldp = X(mkproblem_rdft_d)(X(mktensor_1d)(m, r * is, os),
- X(mktensor_1d)(r, is, m * os),
- p->I, p->O, p->kind);
- }
- else {
- cldp = X(mkproblem_rdft_d)(X(mktensor_1d)(m, is, r * os),
- X(mktensor_1d)(r, m * is, os),
- p->I, p->O, p->kind);
- }
- if (!(cld = X(mkplan_d)(plnr, cldp))) goto nada;
-
- pln = MKPLAN_RDFT(P, &padt, R2HC_KINDP(p->kind[0]) ? apply_dit:apply_dif);
-
- pln->os = R2HC_KINDP(p->kind[0]) ? os : is;
- pln->r = r;
- pln->m = m;
- pln->cld = cld;
- pln->td = 0;
- pln->kind = p->kind[0];
-
- X(ops_zero)(&pln->super.super.ops);
- pln->super.super.ops.add = 4 * r * r;
- pln->super.super.ops.mul = 4 * r * r;
- /* loads + stores, minus loads + stores for all DIT codelets */
- pln->super.super.ops.other = 4 * r + 4 * r * r - (6*r - 2);
- X(ops_madd)((m - 1)/2, &pln->super.super.ops, &cld->ops,
- &pln->super.super.ops);
- pln->super.super.ops.add += 2 * r * r;
- pln->super.super.ops.mul += 2 * r * r;
- pln->super.super.ops.other += 3 * r + 3 * r * r - 2*r;
-
- return &(pln->super.super);
-
- nada:
- X(plan_destroy_internal)(cld);
- X(ifree0)(pln);
- return (plan *) 0;
-}
-
-/* constructors */
-
-static solver *mksolver(rdft_kind kind)
-{
- static const solver_adt sadt = { mkplan };
- S *slv = MKSOLVER(S, &sadt);
- slv->kind = kind;
- return &(slv->super);
-}
-
-void X(rdft_generic_register)(planner *p)
-{
- REGISTER_SOLVER(p, mksolver(R2HC));
- REGISTER_SOLVER(p, mksolver(HC2R));
-}
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