comparison src/fftw-3.3.5/tests/hook.c @ 42:2cd0e3b3e1fd

Current fftw source

+/* fftw hook to be used in the benchmark program.  
+   
+   We keep it in a separate file because 
+
+   1) bench.c is supposed to test the API---we do not want to #include
+      "ifftw.h" and accidentally use internal symbols/macros.
+   2) this code is a royal mess.  The messiness is due to
+      A) confusion between internal fftw tensors and bench_tensor's
+         (which we want to keep separate because the benchmark
+	  program tests other routines too)
+      B) despite A), our desire to recycle the libbench verifier.
+*/
+
+#include <stdio.h>
+#include "bench-user.h"
+
+#define CALLING_FFTW /* hack for Windows DLL nonsense */
+#include "api.h"
+#include "dft.h"
+#include "rdft.h"
+
+extern int paranoid; /* in bench.c */
+extern X(plan) the_plan; /* in bench.c */
+
+/*
+  transform an fftw tensor into a bench_tensor.
+*/
+static bench_tensor *fftw_tensor_to_bench_tensor(tensor *t)
+{
+     bench_tensor *bt = mktensor(t->rnk);
+
+     if (FINITE_RNK(t->rnk)) {
+	  int i;
+	  for (i = 0; i < t->rnk; ++i) {
+	       /* FIXME: 64-bit unclean because of INT -> int conversion */
+	       bt->dims[i].n = t->dims[i].n;
+	       bt->dims[i].is = t->dims[i].is;
+	       bt->dims[i].os = t->dims[i].os;
+	       BENCH_ASSERT(bt->dims[i].n == t->dims[i].n);
+	       BENCH_ASSERT(bt->dims[i].is == t->dims[i].is);
+	       BENCH_ASSERT(bt->dims[i].os == t->dims[i].os);
+	  }
+     }
+     return bt;
+}
+
+/*
+  transform an fftw problem into a bench_problem.
+*/
+static bench_problem *fftw_problem_to_bench_problem(planner *plnr,
+						    const problem *p_)
+{
+     bench_problem *bp = 0;
+     switch (p_->adt->problem_kind) {
+	 case PROBLEM_DFT:
+	 {
+	      const problem_dft *p = (const problem_dft *) p_;
+	  
+	      if (!p->ri || !p->ii)
+		   abort();
+
+	      bp = (bench_problem *) bench_malloc(sizeof(bench_problem));
+
+	      bp->kind = PROBLEM_COMPLEX;
+	      bp->sign = FFT_SIGN;
+	      bp->split = 1; /* tensor strides are in R's, not C's */
+	      bp->in = UNTAINT(p->ri);
+	      bp->out = UNTAINT(p->ro);
+	      bp->ini = UNTAINT(p->ii);
+	      bp->outi = UNTAINT(p->io);
+	      bp->inphys = bp->outphys = 0;
+	      bp->iphyssz = bp->ophyssz = 0;
+	      bp->in_place = p->ri == p->ro;
+	      bp->sz = fftw_tensor_to_bench_tensor(p->sz);
+	      bp->vecsz = fftw_tensor_to_bench_tensor(p->vecsz);
+	      bp->k = 0;
+	      break;
+	 }
+	 case PROBLEM_RDFT:
+	 {
+	      const problem_rdft *p = (const problem_rdft *) p_;
+	      int i;
+
+	      if (!p->I || !p->O)
+		   abort();
+
+	      for (i = 0; i < p->sz->rnk; ++i)
+		   switch (p->kind[i]) {
+		       case R2HC01:
+		       case R2HC10:
+		       case R2HC11:
+		       case HC2R01:
+		       case HC2R10:
+		       case HC2R11:
+			    return bp;
+		       default:
+			    ;
+		   }
+	  
+	      bp = (bench_problem *) bench_malloc(sizeof(bench_problem));
+
+	      bp->kind = PROBLEM_R2R;
+	      bp->sign = FFT_SIGN;
+	      bp->split = 0;
+	      bp->in = UNTAINT(p->I);
+	      bp->out = UNTAINT(p->O);
+	      bp->ini = bp->outi = 0;
+	      bp->inphys = bp->outphys = 0;
+	      bp->iphyssz = bp->ophyssz = 0;
+	      bp->in_place = p->I == p->O;
+	      bp->sz = fftw_tensor_to_bench_tensor(p->sz);
+	      bp->vecsz = fftw_tensor_to_bench_tensor(p->vecsz);
+	      bp->k = (r2r_kind_t *) bench_malloc(sizeof(r2r_kind_t) * p->sz->rnk);
+	      for (i = 0; i < p->sz->rnk; ++i)
+		   switch (p->kind[i]) {
+		       case R2HC: bp->k[i] = R2R_R2HC; break;
+		       case HC2R: bp->k[i] = R2R_HC2R; break;
+		       case DHT: bp->k[i] = R2R_DHT; break;
+		       case REDFT00: bp->k[i] = R2R_REDFT00; break;
+		       case REDFT01: bp->k[i] = R2R_REDFT01; break;
+		       case REDFT10: bp->k[i] = R2R_REDFT10; break;
+		       case REDFT11: bp->k[i] = R2R_REDFT11; break;
+		       case RODFT00: bp->k[i] = R2R_RODFT00; break;
+		       case RODFT01: bp->k[i] = R2R_RODFT01; break;
+		       case RODFT10: bp->k[i] = R2R_RODFT10; break;
+		       case RODFT11: bp->k[i] = R2R_RODFT11; break;
+		       default: CK(0);
+		   }
+	      break;
+	 }
+	 case PROBLEM_RDFT2:
+	 {
+	      const problem_rdft2 *p = (const problem_rdft2 *) p_;
+	      int rnk = p->sz->rnk;
+	  
+	      if (!p->r0 || !p->r1 || !p->cr || !p->ci)
+		   abort();
+	      
+	      /* give up verifying rdft2 R2HCII */
+	      if (p->kind != R2HC && p->kind != HC2R)
+		   return bp;
+
+	      if (rnk > 0) {
+		   /* can't verify separate even/odd arrays for now */
+		   if (2 * (p->r1 - p->r0) !=
+		       ((p->kind == R2HC) ? 
+			p->sz->dims[rnk-1].is : p->sz->dims[rnk-1].os))
+			return bp;
+	      }
+
+	      bp = (bench_problem *) bench_malloc(sizeof(bench_problem));
+
+	      bp->kind = PROBLEM_REAL;
+	      bp->sign = p->kind == R2HC ? FFT_SIGN : -FFT_SIGN;
+	      bp->split = 1; /* tensor strides are in R's, not C's */
+	      if (p->kind == R2HC) {
+		   bp->sign = FFT_SIGN;
+		   bp->in = UNTAINT(p->r0);
+		   bp->out = UNTAINT(p->cr);
+		   bp->ini = 0;
+		   bp->outi = UNTAINT(p->ci);
+	      }
+	      else {
+		   bp->sign = -FFT_SIGN;
+		   bp->out = UNTAINT(p->r0);
+		   bp->in = UNTAINT(p->cr);
+		   bp->outi = 0;
+		   bp->ini = UNTAINT(p->ci);
+	      }
+	      bp->inphys = bp->outphys = 0;
+	      bp->iphyssz = bp->ophyssz = 0;
+	      bp->in_place = p->r0 == p->cr;
+	      bp->sz = fftw_tensor_to_bench_tensor(p->sz);
+	      if (rnk > 0) {
+		   if (p->kind == R2HC)
+			bp->sz->dims[rnk-1].is /= 2;
+		   else 
+			bp->sz->dims[rnk-1].os /= 2;
+	      }
+	      bp->vecsz = fftw_tensor_to_bench_tensor(p->vecsz);
+	      bp->k = 0;
+	      break;
+	 }
+	 default: 
+	      abort();
+     }
+
+     bp->userinfo = 0;
+     bp->pstring = 0;
+     bp->destroy_input = !NO_DESTROY_INPUTP(plnr);
+
+     return bp;
+}
+
+static void hook(planner *plnr, plan *pln, const problem *p_, int optimalp)
+{
+     int rounds = 5;
+     double tol = SINGLE_PRECISION ? 1.0e-3 : 1.0e-10;
+     UNUSED(optimalp);
+
+     if (verbose > 5) {
+	  printer *pr = X(mkprinter_file)(stdout);
+	  pr->print(pr, "%P:%(%p%)\n", p_, pln);
+	  X(printer_destroy)(pr);
+	  printf("cost %g  \n\n", pln->pcost);
+     }
+
+     if (paranoid) {
+	  bench_problem *bp;
+
+	  bp = fftw_problem_to_bench_problem(plnr, p_);
+	  if (bp) {
+	       X(plan) the_plan_save = the_plan;
+
+	       the_plan = (apiplan *) MALLOC(sizeof(apiplan), PLANS);
+	       the_plan->pln = pln;
+	       the_plan->prb = (problem *) p_;
+
+	       X(plan_awake)(pln, AWAKE_SQRTN_TABLE);
+	       verify_problem(bp, rounds, tol);
+	       X(plan_awake)(pln, SLEEPY);
+
+	       X(ifree)(the_plan);
+	       the_plan = the_plan_save;
+
+	       problem_destroy(bp);
+	  }
+
+     }
+}
+
+static void paranoid_checks(void)
+{
+     /* FIXME: assumes char = 8 bits, which is false on at least one
+	DSP I know of. */
+#if 0
+     /* if flags_t is not 64 bits i want to know it. */
+     CK(sizeof(flags_t) == 8);
+
+     CK(sizeof(md5uint) >= 4);
+#endif
+
+     CK(sizeof(uintptr_t) >= sizeof(R *));
+
+     CK(sizeof(INT) >= sizeof(R *));
+}
+
+void install_hook(void)
+{
+     planner *plnr = X(the_planner)();
+     plnr->hook = hook;
+     paranoid_checks();
+}
+
+void uninstall_hook(void)
+{
+     planner *plnr = X(the_planner)();
+     plnr->hook = 0;
+}