diff src/fftw-3.3.8/tests/bench.c @ 82:d0c2a83c1364

Add FFTW 3.3.8 source, and a Linux build

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.8/tests/bench.c	Tue Nov 19 14:52:55 2019 +0000
@@ -0,0 +1,552 @@
+/**************************************************************************/
+/* NOTE to users: this is the FFTW self-test and benchmark program.
+   It is probably NOT a good place to learn FFTW usage, since it has a
+   lot of added complexity in order to exercise and test the full API,
+   etcetera.  We suggest reading the manual. 
+
+   (Some of the self-test code is split off into fftw-bench.c and
+   hook.c.) */
+/**************************************************************************/
+
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+#include "tests/fftw-bench.h"
+
+static const char *mkversion(void) { return FFTW(version); }
+static const char *mkcc(void) { return FFTW(cc); }
+static const char *mkcodelet_optim(void) { return FFTW(codelet_optim); }
+
+BEGIN_BENCH_DOC
+BENCH_DOC("name", "fftw3")
+BENCH_DOCF("version", mkversion)
+BENCH_DOCF("cc", mkcc)
+BENCH_DOCF("codelet-optim", mkcodelet_optim)
+END_BENCH_DOC 
+
+static FFTW(iodim) *bench_tensor_to_fftw_iodim(bench_tensor *t)
+{
+     FFTW(iodim) *d;
+     int i;
+
+     BENCH_ASSERT(t->rnk >= 0);
+     if (t->rnk == 0) return 0;
+     
+     d = (FFTW(iodim) *)bench_malloc(sizeof(FFTW(iodim)) * t->rnk);
+     for (i = 0; i < t->rnk; ++i) {
+	  d[i].n = t->dims[i].n;
+	  d[i].is = t->dims[i].is;
+	  d[i].os = t->dims[i].os;
+     }
+
+     return d;
+}
+
+static void extract_reim_split(int sign, int size, bench_real *p,
+			       bench_real **r, bench_real **i)
+{
+     if (sign == FFTW_FORWARD) {
+          *r = p + 0;
+          *i = p + size;
+     } else {
+          *r = p + size;
+          *i = p + 0;
+     }
+}
+
+static int sizeof_problem(bench_problem *p)
+{
+     return tensor_sz(p->sz) * tensor_sz(p->vecsz);
+}
+
+/* ouch */
+static int expressible_as_api_many(bench_tensor *t)
+{
+     int i;
+
+     BENCH_ASSERT(BENCH_FINITE_RNK(t->rnk));
+
+     i = t->rnk - 1;
+     while (--i >= 0) {
+	  bench_iodim *d = t->dims + i;
+	  if (d[0].is % d[1].is) return 0;
+	  if (d[0].os % d[1].os) return 0;
+     }
+     return 1;
+}
+
+static int *mkn(bench_tensor *t)
+{
+     int *n = (int *) bench_malloc(sizeof(int *) * t->rnk);
+     int i;
+     for (i = 0; i < t->rnk; ++i) 
+	  n[i] = t->dims[i].n;
+     return n;
+}
+
+static void mknembed_many(bench_tensor *t, int **inembedp, int **onembedp)
+{
+     int i;
+     bench_iodim *d;
+     int *inembed = (int *) bench_malloc(sizeof(int *) * t->rnk);
+     int *onembed = (int *) bench_malloc(sizeof(int *) * t->rnk);
+
+     BENCH_ASSERT(BENCH_FINITE_RNK(t->rnk));
+     *inembedp = inembed; *onembedp = onembed;
+
+     i = t->rnk - 1;
+     while (--i >= 0) {
+	  d = t->dims + i;
+	  inembed[i+1] = d[0].is / d[1].is;
+	  onembed[i+1] = d[0].os / d[1].os;
+     }
+}
+
+/* try to use the most appropriate API function.  Big mess. */
+
+static int imax(int a, int b) { return (a > b ? a : b); }
+
+static int halfish_sizeof_problem(bench_problem *p)
+{
+     int n2 = sizeof_problem(p);
+     if (BENCH_FINITE_RNK(p->sz->rnk) && p->sz->rnk > 0)
+          n2 = (n2 / imax(p->sz->dims[p->sz->rnk - 1].n, 1)) *
+               (p->sz->dims[p->sz->rnk - 1].n / 2 + 1);
+     return n2;
+}
+
+static FFTW(plan) mkplan_real_split(bench_problem *p, unsigned flags)
+{
+     FFTW(plan) pln;
+     bench_tensor *sz = p->sz, *vecsz = p->vecsz;
+     FFTW(iodim) *dims, *howmany_dims;
+     bench_real *ri, *ii, *ro, *io;
+     int n2 = halfish_sizeof_problem(p);
+
+     extract_reim_split(FFTW_FORWARD, n2, (bench_real *) p->in, &ri, &ii);
+     extract_reim_split(FFTW_FORWARD, n2, (bench_real *) p->out, &ro, &io);
+
+     dims = bench_tensor_to_fftw_iodim(sz);
+     howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
+     if (p->sign < 0) {
+	  if (verbose > 2) printf("using plan_guru_split_dft_r2c\n");
+	  pln = FFTW(plan_guru_split_dft_r2c)(sz->rnk, dims,
+					vecsz->rnk, howmany_dims,
+					ri, ro, io, flags);
+     }
+     else {
+	  if (verbose > 2) printf("using plan_guru_split_dft_c2r\n");
+	  pln = FFTW(plan_guru_split_dft_c2r)(sz->rnk, dims,
+					vecsz->rnk, howmany_dims,
+					ri, ii, ro, flags);
+     }
+     bench_free(dims);
+     bench_free(howmany_dims);
+     return pln;
+}
+
+static FFTW(plan) mkplan_real_interleaved(bench_problem *p, unsigned flags)
+{
+     FFTW(plan) pln;
+     bench_tensor *sz = p->sz, *vecsz = p->vecsz;
+
+     if (vecsz->rnk == 0 && tensor_unitstridep(sz) 
+	 && tensor_real_rowmajorp(sz, p->sign, p->in_place)) 
+	  goto api_simple;
+     
+     if (vecsz->rnk == 1 && expressible_as_api_many(sz))
+	  goto api_many;
+
+     goto api_guru;
+
+ api_simple:
+     switch (sz->rnk) {
+	 case 1:
+	      if (p->sign < 0) {
+		   if (verbose > 2) printf("using plan_dft_r2c_1d\n");
+		   return FFTW(plan_dft_r2c_1d)(sz->dims[0].n, 
+						(bench_real *) p->in, 
+						(bench_complex *) p->out,
+						flags);
+	      }
+	      else {
+		   if (verbose > 2) printf("using plan_dft_c2r_1d\n");
+		   return FFTW(plan_dft_c2r_1d)(sz->dims[0].n, 
+						(bench_complex *) p->in, 
+						(bench_real *) p->out,
+						flags);
+	      }
+	      break;
+	 case 2:
+	      if (p->sign < 0) {
+		   if (verbose > 2) printf("using plan_dft_r2c_2d\n");
+		   return FFTW(plan_dft_r2c_2d)(sz->dims[0].n, sz->dims[1].n,
+						(bench_real *) p->in, 
+						(bench_complex *) p->out,
+						flags);
+	      }
+	      else {
+		   if (verbose > 2) printf("using plan_dft_c2r_2d\n");
+		   return FFTW(plan_dft_c2r_2d)(sz->dims[0].n, sz->dims[1].n,
+						(bench_complex *) p->in, 
+						(bench_real *) p->out,
+						flags);
+	      }
+	      break;
+	 case 3:
+	      if (p->sign < 0) {
+		   if (verbose > 2) printf("using plan_dft_r2c_3d\n");
+		   return FFTW(plan_dft_r2c_3d)(
+			sz->dims[0].n, sz->dims[1].n, sz->dims[2].n,
+			(bench_real *) p->in, (bench_complex *) p->out,
+			flags);
+	      }
+	      else {
+		   if (verbose > 2) printf("using plan_dft_c2r_3d\n");
+		   return FFTW(plan_dft_c2r_3d)(
+			sz->dims[0].n, sz->dims[1].n, sz->dims[2].n,
+			(bench_complex *) p->in, (bench_real *) p->out,
+			flags);
+	      }
+	      break;
+	 default: {
+	      int *n = mkn(sz);
+	      if (p->sign < 0) {
+		   if (verbose > 2) printf("using plan_dft_r2c\n");
+		   pln = FFTW(plan_dft_r2c)(sz->rnk, n,
+					    (bench_real *) p->in, 
+					    (bench_complex *) p->out,
+					    flags);
+	      }
+	      else {
+		   if (verbose > 2) printf("using plan_dft_c2r\n");
+		   pln = FFTW(plan_dft_c2r)(sz->rnk, n,
+					    (bench_complex *) p->in, 
+					    (bench_real *) p->out,
+					    flags);
+	      }
+	      bench_free(n);
+	      return pln;
+	 }
+     }
+
+ api_many:
+     {
+	  int *n, *inembed, *onembed;
+	  BENCH_ASSERT(vecsz->rnk == 1);
+	  n = mkn(sz);
+	  mknembed_many(sz, &inembed, &onembed);
+	  if (p->sign < 0) {
+	       if (verbose > 2) printf("using plan_many_dft_r2c\n");
+	       pln = FFTW(plan_many_dft_r2c)(
+		    sz->rnk, n, vecsz->dims[0].n, 
+		    (bench_real *) p->in, inembed,
+		    sz->dims[sz->rnk - 1].is, vecsz->dims[0].is,
+		    (bench_complex *) p->out, onembed,
+		    sz->dims[sz->rnk - 1].os, vecsz->dims[0].os,
+		    flags);
+	  }
+	  else {
+	       if (verbose > 2) printf("using plan_many_dft_c2r\n");
+	       pln = FFTW(plan_many_dft_c2r)(
+		    sz->rnk, n, vecsz->dims[0].n, 
+		    (bench_complex *) 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,
+		    flags);
+	  }
+	  bench_free(n); bench_free(inembed); bench_free(onembed);
+	  return pln;
+     }
+
+ api_guru:
+     {
+	  FFTW(iodim) *dims, *howmany_dims;
+
+	  if (p->sign < 0) {
+	       dims = bench_tensor_to_fftw_iodim(sz);
+	       howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
+	       if (verbose > 2) printf("using plan_guru_dft_r2c\n");
+	       pln = FFTW(plan_guru_dft_r2c)(sz->rnk, dims,
+					     vecsz->rnk, howmany_dims,
+					     (bench_real *) p->in,
+					     (bench_complex *) p->out,
+					     flags);
+	  }
+	  else {
+	       dims = bench_tensor_to_fftw_iodim(sz);
+	       howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
+	       if (verbose > 2) printf("using plan_guru_dft_c2r\n");
+	       pln = FFTW(plan_guru_dft_c2r)(sz->rnk, dims,
+					     vecsz->rnk, howmany_dims,
+					     (bench_complex *) p->in,
+					     (bench_real *) p->out,
+					     flags);
+	  }
+	  bench_free(dims);
+	  bench_free(howmany_dims);
+	  return pln;
+     }
+}
+
+static FFTW(plan) mkplan_real(bench_problem *p, unsigned flags)
+{
+     if (p->split)
+	  return mkplan_real_split(p, flags);
+     else
+	  return mkplan_real_interleaved(p, flags);
+}
+
+static FFTW(plan) mkplan_complex_split(bench_problem *p, unsigned flags)
+{
+     FFTW(plan) pln;
+     bench_tensor *sz = p->sz, *vecsz = p->vecsz;
+     FFTW(iodim) *dims, *howmany_dims;
+     bench_real *ri, *ii, *ro, *io;
+
+     extract_reim_split(p->sign, p->iphyssz, (bench_real *) p->in, &ri, &ii);
+     extract_reim_split(p->sign, p->ophyssz, (bench_real *) p->out, &ro, &io);
+
+     dims = bench_tensor_to_fftw_iodim(sz);
+     howmany_dims = bench_tensor_to_fftw_iodim(vecsz);
+     if (verbose > 2) printf("using plan_guru_split_dft\n");
+     pln = FFTW(plan_guru_split_dft)(sz->rnk, dims,
+			       vecsz->rnk, howmany_dims,
+			       ri, ii, ro, io, flags);
+     bench_free(dims);
+     bench_free(howmany_dims);
+     return pln;
+}
+
+static FFTW(plan) mkplan_complex_interleaved(bench_problem *p, unsigned flags)
+{
+     FFTW(plan) pln;
+     bench_tensor *sz = p->sz, *vecsz = p->vecsz;
+
+     if (vecsz->rnk == 0 && tensor_unitstridep(sz) && tensor_rowmajorp(sz)) 
+	  goto api_simple;
+     
+     if (vecsz->rnk == 1 && expressible_as_api_many(sz))
+	  goto api_many;
+
+     goto api_guru;
+
+ api_simple:
+     switch (sz->rnk) {
+	 case 1:
+	      if (verbose > 2) printf("using plan_dft_1d\n");
+	      return FFTW(plan_dft_1d)(sz->dims[0].n, 
+				       (bench_complex *) p->in,
+				       (bench_complex *) p->out, 
+				       p->sign, flags);
+	      break;
+	 case 2:
+	      if (verbose > 2) printf("using plan_dft_2d\n");
+	      return FFTW(plan_dft_2d)(sz->dims[0].n, sz->dims[1].n,
+				       (bench_complex *) p->in,
+				       (bench_complex *) p->out, 
+				       p->sign, flags);
+	      break;
+	 case 3:
+	      if (verbose > 2) printf("using plan_dft_3d\n");
+	      return FFTW(plan_dft_3d)(
+		   sz->dims[0].n, sz->dims[1].n, sz->dims[2].n,
+		   (bench_complex *) p->in, (bench_complex *) p->out, 
+		   p->sign, flags);
+	      break;
+	 default: {
+	      int *n = mkn(sz);
+	      if (verbose > 2) printf("using plan_dft\n");
+	      pln = FFTW(plan_dft)(sz->rnk, n, 
+				   (bench_complex *) p->in, 
+				   (bench_complex *) p->out, p->sign, flags);
+	      bench_free(n);
+	      return pln;
+	 }
+     }
+
+ 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_dft\n");
+	  pln = FFTW(plan_many_dft)(
+	       sz->rnk, n, vecsz->dims[0].n, 
+	       (bench_complex *) p->in, 
+	       inembed, sz->dims[sz->rnk - 1].is, vecsz->dims[0].is,
+	       (bench_complex *) p->out,
+	       onembed, sz->dims[sz->rnk - 1].os, vecsz->dims[0].os,
+	       p->sign, flags);
+	  bench_free(n); bench_free(inembed); bench_free(onembed);
+	  return pln;
+     }
+
+ 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_dft\n");
+	  pln = FFTW(plan_guru_dft)(sz->rnk, dims,
+				    vecsz->rnk, howmany_dims,
+				    (bench_complex *) p->in,
+				    (bench_complex *) p->out,
+				    p->sign, flags);
+	  bench_free(dims);
+	  bench_free(howmany_dims);
+	  return pln;
+     }
+}
+
+static FFTW(plan) mkplan_complex(bench_problem *p, unsigned flags)
+{
+     if (p->split)
+	  return mkplan_complex_split(p, flags);
+     else
+	  return mkplan_complex_interleaved(p, flags);
+}
+
+static FFTW(plan) mkplan_r2r(bench_problem *p, unsigned flags)
+{
+     FFTW(plan) pln;
+     bench_tensor *sz = p->sz, *vecsz = p->vecsz;
+     FFTW(r2r_kind) *k;
+
+     k = (FFTW(r2r_kind) *) bench_malloc(sizeof(FFTW(r2r_kind)) * sz->rnk);
+     {
+	  int i;
+	  for (i = 0; i < sz->rnk; ++i)
+	       switch (p->k[i]) {
+		   case R2R_R2HC: k[i] = FFTW_R2HC; break;
+		   case R2R_HC2R: k[i] = FFTW_HC2R; break;
+		   case R2R_DHT: k[i] = FFTW_DHT; break;
+		   case R2R_REDFT00: k[i] = FFTW_REDFT00; break;
+		   case R2R_REDFT01: k[i] = FFTW_REDFT01; break;
+		   case R2R_REDFT10: k[i] = FFTW_REDFT10; break;
+		   case R2R_REDFT11: k[i] = FFTW_REDFT11; break;
+		   case R2R_RODFT00: k[i] = FFTW_RODFT00; break;
+		   case R2R_RODFT01: k[i] = FFTW_RODFT01; break;
+		   case R2R_RODFT10: k[i] = FFTW_RODFT10; break;
+		   case R2R_RODFT11: k[i] = FFTW_RODFT11; break;
+		   default: BENCH_ASSERT(0);
+	       }
+     }
+
+     if (vecsz->rnk == 0 && tensor_unitstridep(sz) && tensor_rowmajorp(sz)) 
+	  goto api_simple;
+     
+     if (vecsz->rnk == 1 && expressible_as_api_many(sz))
+	  goto api_many;
+
+     goto api_guru;
+
+ api_simple:
+     switch (sz->rnk) {
+	 case 1:
+	      if (verbose > 2) printf("using plan_r2r_1d\n");
+	      pln = FFTW(plan_r2r_1d)(sz->dims[0].n, 
+				      (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);
+}