553 lines
15 KiB
C
553 lines
15 KiB
C
/**************************************************************************/
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/* NOTE to users: this is the FFTW self-test and benchmark program.
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It is probably NOT a good place to learn FFTW usage, since it has a
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lot of added complexity in order to exercise and test the full API,
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etcetera. We suggest reading the manual.
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(Some of the self-test code is split off into fftw-bench.c and
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hook.c.) */
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/**************************************************************************/
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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#include "tests/fftw-bench.h"
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static const char *mkversion(void) { return FFTW(version); }
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static const char *mkcc(void) { return FFTW(cc); }
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static const char *mkcodelet_optim(void) { return FFTW(codelet_optim); }
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BEGIN_BENCH_DOC
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BENCH_DOC("name", "fftw3")
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BENCH_DOCF("version", mkversion)
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BENCH_DOCF("cc", mkcc)
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BENCH_DOCF("codelet-optim", mkcodelet_optim)
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END_BENCH_DOC
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static FFTW(iodim) *bench_tensor_to_fftw_iodim(bench_tensor *t)
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{
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FFTW(iodim) *d;
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int i;
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BENCH_ASSERT(t->rnk >= 0);
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if (t->rnk == 0) return 0;
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d = (FFTW(iodim) *)bench_malloc(sizeof(FFTW(iodim)) * t->rnk);
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for (i = 0; i < t->rnk; ++i) {
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d[i].n = t->dims[i].n;
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d[i].is = t->dims[i].is;
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d[i].os = t->dims[i].os;
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}
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return d;
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}
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static void extract_reim_split(int sign, int size, bench_real *p,
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bench_real **r, bench_real **i)
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{
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if (sign == FFTW_FORWARD) {
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*r = p + 0;
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*i = p + size;
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} else {
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*r = p + size;
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*i = p + 0;
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}
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}
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static int sizeof_problem(bench_problem *p)
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{
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return tensor_sz(p->sz) * tensor_sz(p->vecsz);
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}
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/* ouch */
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static int expressible_as_api_many(bench_tensor *t)
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{
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int i;
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BENCH_ASSERT(BENCH_FINITE_RNK(t->rnk));
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i = t->rnk - 1;
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while (--i >= 0) {
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bench_iodim *d = t->dims + i;
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if (d[0].is % d[1].is) return 0;
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if (d[0].os % d[1].os) return 0;
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}
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return 1;
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}
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static int *mkn(bench_tensor *t)
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{
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int *n = (int *) bench_malloc(sizeof(int *) * t->rnk);
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int i;
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for (i = 0; i < t->rnk; ++i)
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n[i] = t->dims[i].n;
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return n;
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}
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static void mknembed_many(bench_tensor *t, int **inembedp, int **onembedp)
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{
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int i;
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bench_iodim *d;
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int *inembed = (int *) bench_malloc(sizeof(int *) * t->rnk);
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int *onembed = (int *) bench_malloc(sizeof(int *) * t->rnk);
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BENCH_ASSERT(BENCH_FINITE_RNK(t->rnk));
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*inembedp = inembed; *onembedp = onembed;
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i = t->rnk - 1;
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while (--i >= 0) {
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d = t->dims + i;
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inembed[i+1] = d[0].is / d[1].is;
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onembed[i+1] = d[0].os / d[1].os;
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}
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}
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/* try to use the most appropriate API function. Big mess. */
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static int imax(int a, int b) { return (a > b ? a : b); }
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static int halfish_sizeof_problem(bench_problem *p)
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{
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int n2 = sizeof_problem(p);
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if (BENCH_FINITE_RNK(p->sz->rnk) && p->sz->rnk > 0)
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n2 = (n2 / imax(p->sz->dims[p->sz->rnk - 1].n, 1)) *
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(p->sz->dims[p->sz->rnk - 1].n / 2 + 1);
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return n2;
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}
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static FFTW(plan) mkplan_real_split(bench_problem *p, unsigned flags)
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{
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FFTW(plan) pln;
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bench_tensor *sz = p->sz, *vecsz = p->vecsz;
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FFTW(iodim) *dims, *howmany_dims;
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bench_real *ri, *ii, *ro, *io;
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int n2 = halfish_sizeof_problem(p);
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extract_reim_split(FFTW_FORWARD, n2, (bench_real *) p->in, &ri, &ii);
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extract_reim_split(FFTW_FORWARD, n2, (bench_real *) p->out, &ro, &io);
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dims = bench_tensor_to_fftw_iodim(sz);
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howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
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if (p->sign < 0) {
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if (verbose > 2) printf("using plan_guru_split_dft_r2c\n");
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pln = FFTW(plan_guru_split_dft_r2c)(sz->rnk, dims,
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vecsz->rnk, howmany_dims,
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ri, ro, io, flags);
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}
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else {
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if (verbose > 2) printf("using plan_guru_split_dft_c2r\n");
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pln = FFTW(plan_guru_split_dft_c2r)(sz->rnk, dims,
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vecsz->rnk, howmany_dims,
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ri, ii, ro, flags);
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}
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bench_free(dims);
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bench_free(howmany_dims);
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return pln;
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}
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static FFTW(plan) mkplan_real_interleaved(bench_problem *p, unsigned flags)
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{
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FFTW(plan) pln;
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bench_tensor *sz = p->sz, *vecsz = p->vecsz;
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if (vecsz->rnk == 0 && tensor_unitstridep(sz)
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&& tensor_real_rowmajorp(sz, p->sign, p->in_place))
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goto api_simple;
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if (vecsz->rnk == 1 && expressible_as_api_many(sz))
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goto api_many;
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goto api_guru;
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api_simple:
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switch (sz->rnk) {
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case 1:
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if (p->sign < 0) {
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if (verbose > 2) printf("using plan_dft_r2c_1d\n");
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return FFTW(plan_dft_r2c_1d)(sz->dims[0].n,
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(bench_real *) p->in,
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(bench_complex *) p->out,
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flags);
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}
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else {
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if (verbose > 2) printf("using plan_dft_c2r_1d\n");
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return FFTW(plan_dft_c2r_1d)(sz->dims[0].n,
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(bench_complex *) p->in,
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(bench_real *) p->out,
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flags);
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}
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break;
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case 2:
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if (p->sign < 0) {
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if (verbose > 2) printf("using plan_dft_r2c_2d\n");
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return FFTW(plan_dft_r2c_2d)(sz->dims[0].n, sz->dims[1].n,
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(bench_real *) p->in,
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(bench_complex *) p->out,
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flags);
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}
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else {
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if (verbose > 2) printf("using plan_dft_c2r_2d\n");
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return FFTW(plan_dft_c2r_2d)(sz->dims[0].n, sz->dims[1].n,
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(bench_complex *) p->in,
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(bench_real *) p->out,
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flags);
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}
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break;
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case 3:
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if (p->sign < 0) {
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if (verbose > 2) printf("using plan_dft_r2c_3d\n");
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return FFTW(plan_dft_r2c_3d)(
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sz->dims[0].n, sz->dims[1].n, sz->dims[2].n,
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(bench_real *) p->in, (bench_complex *) p->out,
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flags);
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}
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else {
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if (verbose > 2) printf("using plan_dft_c2r_3d\n");
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return FFTW(plan_dft_c2r_3d)(
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sz->dims[0].n, sz->dims[1].n, sz->dims[2].n,
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(bench_complex *) p->in, (bench_real *) p->out,
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flags);
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}
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break;
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default: {
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int *n = mkn(sz);
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if (p->sign < 0) {
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if (verbose > 2) printf("using plan_dft_r2c\n");
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pln = FFTW(plan_dft_r2c)(sz->rnk, n,
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(bench_real *) p->in,
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(bench_complex *) p->out,
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flags);
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}
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else {
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if (verbose > 2) printf("using plan_dft_c2r\n");
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pln = FFTW(plan_dft_c2r)(sz->rnk, n,
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(bench_complex *) p->in,
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(bench_real *) p->out,
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flags);
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}
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bench_free(n);
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return pln;
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}
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}
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api_many:
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{
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int *n, *inembed, *onembed;
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BENCH_ASSERT(vecsz->rnk == 1);
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n = mkn(sz);
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mknembed_many(sz, &inembed, &onembed);
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if (p->sign < 0) {
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if (verbose > 2) printf("using plan_many_dft_r2c\n");
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pln = FFTW(plan_many_dft_r2c)(
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sz->rnk, n, vecsz->dims[0].n,
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(bench_real *) p->in, inembed,
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sz->dims[sz->rnk - 1].is, vecsz->dims[0].is,
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(bench_complex *) p->out, onembed,
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sz->dims[sz->rnk - 1].os, vecsz->dims[0].os,
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flags);
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}
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else {
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if (verbose > 2) printf("using plan_many_dft_c2r\n");
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pln = FFTW(plan_many_dft_c2r)(
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sz->rnk, n, vecsz->dims[0].n,
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(bench_complex *) p->in, inembed,
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sz->dims[sz->rnk - 1].is, vecsz->dims[0].is,
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(bench_real *) p->out, onembed,
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sz->dims[sz->rnk - 1].os, vecsz->dims[0].os,
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flags);
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}
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bench_free(n); bench_free(inembed); bench_free(onembed);
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return pln;
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}
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api_guru:
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{
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FFTW(iodim) *dims, *howmany_dims;
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if (p->sign < 0) {
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dims = bench_tensor_to_fftw_iodim(sz);
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howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
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if (verbose > 2) printf("using plan_guru_dft_r2c\n");
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pln = FFTW(plan_guru_dft_r2c)(sz->rnk, dims,
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vecsz->rnk, howmany_dims,
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(bench_real *) p->in,
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(bench_complex *) p->out,
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flags);
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}
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else {
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dims = bench_tensor_to_fftw_iodim(sz);
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howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
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if (verbose > 2) printf("using plan_guru_dft_c2r\n");
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pln = FFTW(plan_guru_dft_c2r)(sz->rnk, dims,
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vecsz->rnk, howmany_dims,
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(bench_complex *) p->in,
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(bench_real *) p->out,
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flags);
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}
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bench_free(dims);
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bench_free(howmany_dims);
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return pln;
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}
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}
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static FFTW(plan) mkplan_real(bench_problem *p, unsigned flags)
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{
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if (p->split)
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return mkplan_real_split(p, flags);
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else
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return mkplan_real_interleaved(p, flags);
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}
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static FFTW(plan) mkplan_complex_split(bench_problem *p, unsigned flags)
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{
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FFTW(plan) pln;
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bench_tensor *sz = p->sz, *vecsz = p->vecsz;
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FFTW(iodim) *dims, *howmany_dims;
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bench_real *ri, *ii, *ro, *io;
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extract_reim_split(p->sign, p->iphyssz, (bench_real *) p->in, &ri, &ii);
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extract_reim_split(p->sign, p->ophyssz, (bench_real *) p->out, &ro, &io);
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dims = bench_tensor_to_fftw_iodim(sz);
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howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
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if (verbose > 2) printf("using plan_guru_split_dft\n");
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pln = FFTW(plan_guru_split_dft)(sz->rnk, dims,
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vecsz->rnk, howmany_dims,
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ri, ii, ro, io, flags);
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bench_free(dims);
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bench_free(howmany_dims);
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return pln;
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}
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static FFTW(plan) mkplan_complex_interleaved(bench_problem *p, unsigned flags)
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{
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FFTW(plan) pln;
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bench_tensor *sz = p->sz, *vecsz = p->vecsz;
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if (vecsz->rnk == 0 && tensor_unitstridep(sz) && tensor_rowmajorp(sz))
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goto api_simple;
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if (vecsz->rnk == 1 && expressible_as_api_many(sz))
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goto api_many;
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goto api_guru;
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api_simple:
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switch (sz->rnk) {
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case 1:
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if (verbose > 2) printf("using plan_dft_1d\n");
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return FFTW(plan_dft_1d)(sz->dims[0].n,
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(bench_complex *) p->in,
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(bench_complex *) p->out,
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p->sign, flags);
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break;
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case 2:
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if (verbose > 2) printf("using plan_dft_2d\n");
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return FFTW(plan_dft_2d)(sz->dims[0].n, sz->dims[1].n,
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(bench_complex *) p->in,
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(bench_complex *) p->out,
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p->sign, flags);
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break;
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case 3:
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if (verbose > 2) printf("using plan_dft_3d\n");
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return FFTW(plan_dft_3d)(
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sz->dims[0].n, sz->dims[1].n, sz->dims[2].n,
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(bench_complex *) p->in, (bench_complex *) p->out,
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p->sign, flags);
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break;
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default: {
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int *n = mkn(sz);
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if (verbose > 2) printf("using plan_dft\n");
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pln = FFTW(plan_dft)(sz->rnk, n,
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(bench_complex *) p->in,
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(bench_complex *) p->out, p->sign, flags);
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bench_free(n);
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return pln;
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}
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}
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api_many:
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{
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int *n, *inembed, *onembed;
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BENCH_ASSERT(vecsz->rnk == 1);
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n = mkn(sz);
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mknembed_many(sz, &inembed, &onembed);
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if (verbose > 2) printf("using plan_many_dft\n");
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pln = FFTW(plan_many_dft)(
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sz->rnk, n, vecsz->dims[0].n,
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(bench_complex *) p->in,
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inembed, sz->dims[sz->rnk - 1].is, vecsz->dims[0].is,
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(bench_complex *) p->out,
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onembed, sz->dims[sz->rnk - 1].os, vecsz->dims[0].os,
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p->sign, flags);
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bench_free(n); bench_free(inembed); bench_free(onembed);
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return pln;
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}
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api_guru:
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{
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FFTW(iodim) *dims, *howmany_dims;
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dims = bench_tensor_to_fftw_iodim(sz);
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howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
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if (verbose > 2) printf("using plan_guru_dft\n");
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pln = FFTW(plan_guru_dft)(sz->rnk, dims,
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vecsz->rnk, howmany_dims,
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(bench_complex *) p->in,
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(bench_complex *) p->out,
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p->sign, flags);
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bench_free(dims);
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bench_free(howmany_dims);
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return pln;
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}
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}
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static FFTW(plan) mkplan_complex(bench_problem *p, unsigned flags)
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{
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if (p->split)
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return mkplan_complex_split(p, flags);
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else
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return mkplan_complex_interleaved(p, flags);
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}
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static FFTW(plan) mkplan_r2r(bench_problem *p, unsigned flags)
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{
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FFTW(plan) pln;
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bench_tensor *sz = p->sz, *vecsz = p->vecsz;
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FFTW(r2r_kind) *k;
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k = (FFTW(r2r_kind) *) bench_malloc(sizeof(FFTW(r2r_kind)) * sz->rnk);
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{
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int i;
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for (i = 0; i < sz->rnk; ++i)
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switch (p->k[i]) {
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case R2R_R2HC: k[i] = FFTW_R2HC; break;
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case R2R_HC2R: k[i] = FFTW_HC2R; break;
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case R2R_DHT: k[i] = FFTW_DHT; break;
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case R2R_REDFT00: k[i] = FFTW_REDFT00; break;
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case R2R_REDFT01: k[i] = FFTW_REDFT01; break;
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case R2R_REDFT10: k[i] = FFTW_REDFT10; break;
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case R2R_REDFT11: k[i] = FFTW_REDFT11; break;
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case R2R_RODFT00: k[i] = FFTW_RODFT00; break;
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case R2R_RODFT01: k[i] = FFTW_RODFT01; break;
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case R2R_RODFT10: k[i] = FFTW_RODFT10; break;
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case R2R_RODFT11: k[i] = FFTW_RODFT11; break;
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default: BENCH_ASSERT(0);
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}
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}
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if (vecsz->rnk == 0 && tensor_unitstridep(sz) && tensor_rowmajorp(sz))
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goto api_simple;
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if (vecsz->rnk == 1 && expressible_as_api_many(sz))
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goto api_many;
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goto api_guru;
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api_simple:
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switch (sz->rnk) {
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case 1:
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if (verbose > 2) printf("using plan_r2r_1d\n");
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pln = FFTW(plan_r2r_1d)(sz->dims[0].n,
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(bench_real *) p->in,
|
|
(bench_real *) p->out,
|
|
k[0], flags);
|
|
goto done;
|
|
case 2:
|
|
if (verbose > 2) printf("using plan_r2r_2d\n");
|
|
pln = FFTW(plan_r2r_2d)(sz->dims[0].n, sz->dims[1].n,
|
|
(bench_real *) p->in,
|
|
(bench_real *) p->out,
|
|
k[0], k[1], flags);
|
|
goto done;
|
|
case 3:
|
|
if (verbose > 2) printf("using plan_r2r_3d\n");
|
|
pln = FFTW(plan_r2r_3d)(
|
|
sz->dims[0].n, sz->dims[1].n, sz->dims[2].n,
|
|
(bench_real *) p->in, (bench_real *) p->out,
|
|
k[0], k[1], k[2], flags);
|
|
goto done;
|
|
default: {
|
|
int *n = mkn(sz);
|
|
if (verbose > 2) printf("using plan_r2r\n");
|
|
pln = FFTW(plan_r2r)(sz->rnk, n,
|
|
(bench_real *) p->in, (bench_real *) p->out,
|
|
k, flags);
|
|
bench_free(n);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
api_many:
|
|
{
|
|
int *n, *inembed, *onembed;
|
|
BENCH_ASSERT(vecsz->rnk == 1);
|
|
n = mkn(sz);
|
|
mknembed_many(sz, &inembed, &onembed);
|
|
if (verbose > 2) printf("using plan_many_r2r\n");
|
|
pln = FFTW(plan_many_r2r)(
|
|
sz->rnk, n, vecsz->dims[0].n,
|
|
(bench_real *) p->in,
|
|
inembed, sz->dims[sz->rnk - 1].is, vecsz->dims[0].is,
|
|
(bench_real *) p->out,
|
|
onembed, sz->dims[sz->rnk - 1].os, vecsz->dims[0].os,
|
|
k, flags);
|
|
bench_free(n); bench_free(inembed); bench_free(onembed);
|
|
goto done;
|
|
}
|
|
|
|
api_guru:
|
|
{
|
|
FFTW(iodim) *dims, *howmany_dims;
|
|
|
|
dims = bench_tensor_to_fftw_iodim(sz);
|
|
howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
|
|
if (verbose > 2) printf("using plan_guru_r2r\n");
|
|
pln = FFTW(plan_guru_r2r)(sz->rnk, dims,
|
|
vecsz->rnk, howmany_dims,
|
|
(bench_real *) p->in,
|
|
(bench_real *) p->out, k, flags);
|
|
bench_free(dims);
|
|
bench_free(howmany_dims);
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
bench_free(k);
|
|
return pln;
|
|
}
|
|
|
|
FFTW(plan) mkplan(bench_problem *p, unsigned flags)
|
|
{
|
|
switch (p->kind) {
|
|
case PROBLEM_COMPLEX: return mkplan_complex(p, flags);
|
|
case PROBLEM_REAL: return mkplan_real(p, flags);
|
|
case PROBLEM_R2R: return mkplan_r2r(p, flags);
|
|
default: BENCH_ASSERT(0); return 0;
|
|
}
|
|
}
|
|
|
|
void main_init(int *argc, char ***argv)
|
|
{
|
|
UNUSED(argc);
|
|
UNUSED(argv);
|
|
}
|
|
|
|
void initial_cleanup(void)
|
|
{
|
|
}
|
|
|
|
void final_cleanup(void)
|
|
{
|
|
}
|
|
|
|
int import_wisdom(FILE *f)
|
|
{
|
|
return FFTW(import_wisdom_from_file)(f);
|
|
}
|
|
|
|
void export_wisdom(FILE *f)
|
|
{
|
|
FFTW(export_wisdom_to_file)(f);
|
|
}
|