view Lib/fftw-3.2.1/libbench2/report.c @ 1:e86e9c111b29

Updates stuff that potentially fixes the memory leak and also makes it work on Windows and Linux (Need to test). Still have to fix fftw include for linux in Jucer.

/*
 * Copyright (c) 2001 Matteo Frigo
 * Copyright (c) 2001 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 "bench.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

void (*report)(const bench_problem *p, double *t, int st);

#undef min
#undef max /* you never know */

struct stats {
     double min;
     double max;
     double avg;
     double median;
};

static void mkstat(double *t, int st, struct stats *a)
{
     int i, j;
     
     a->min = t[0];
     a->max = t[0];
     a->avg = 0.0;

     for (i = 0; i < st; ++i) {
	  if (t[i] < a->min)
	       a->min = t[i];
	  if (t[i] > a->max)
	       a->max = t[i];
	  a->avg += t[i];
     }
     a->avg /= (double)st;

     /* compute median --- silly bubblesort algorithm */
     for (i = st - 1; i > 1; --i) {
	  for (j = 0; j < i - 1; ++j) {
	       double t0, t1;
	       if ((t0 = t[j]) > (t1 = t[j + 1])) {
		    t[j] = t0;
		    t[j + 1] = t1;
	       }
	  } 
     }
     a->median = t[st / 2];
}

void report_mflops(const bench_problem *p, double *t, int st)
{
     struct stats s;
     mkstat(t, st, &s);
     ovtpvt("(%g %g %g %g)\n", 
	    mflops(p, s.max), mflops(p, s.avg), 
	    mflops(p, s.min), mflops(p, s.median));
}

void report_time(const bench_problem *p, double *t, int st)
{
     struct stats s;
     UNUSED(p);
     mkstat(t, st, &s);
     ovtpvt("(%g %g %g %g)\n", s.min, s.avg, s.max, s.median);
}

void report_benchmark(const bench_problem *p, double *t, int st)
{
     struct stats s;
     mkstat(t, st, &s);
     ovtpvt("%.5g %.8g %g\n", mflops(p, s.min), s.min, p->setup_time);
}

static void sprintf_time(double x, char *buf, int buflen)
{
#ifdef HAVE_SNPRINTF
#  define MY_SPRINTF(a, b) snprintf(buf, buflen, a, b)
#else
#  define MY_SPRINTF(a, b) sprintf(buf, a, b)
#endif
     if (x < 1.0E-6)
	  MY_SPRINTF("%.2f ns", x * 1.0E9);
     else if (x < 1.0E-3)
	  MY_SPRINTF("%.2f us", x * 1.0E6);
     else if (x < 1.0)
	  MY_SPRINTF("%.2f ms", x * 1.0E3);
     else
	  MY_SPRINTF("%.2f s", x);
#undef MY_SPRINTF
}

void report_verbose(const bench_problem *p, double *t, int st)
{
     struct stats s;
     char bmin[64], bmax[64], bavg[64], bmedian[64], btmin[64];
     char bsetup[64];
     int copyp = tensor_sz(p->sz) == 1;

     mkstat(t, st, &s);

     sprintf_time(s.min, bmin, 64);
     sprintf_time(s.max, bmax, 64);
     sprintf_time(s.avg, bavg, 64);
     sprintf_time(s.median, bmedian, 64);
     sprintf_time(time_min, btmin, 64);
     sprintf_time(p->setup_time, bsetup, 64);

     ovtpvt("Problem: %s, setup: %s, time: %s, %s: %.5g\n",
	    p->pstring, bsetup, bmin, 
	    copyp ? "fp-move/us" : "``mflops''",
	    mflops(p, s.min));

     if (verbose) {
	  ovtpvt("Took %d measurements for at least %s each.\n", st, btmin);
	  ovtpvt("Time: min %s, max %s, avg %s, median %s\n",
		 bmin, bmax, bavg, bmedian);
     }
}