OpenBLAS/benchmark/min.c

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#include "bench.h"

#undef NAMIN

#ifndef COMPLEX
#ifdef DOUBLE
#define NAMIN   BLASFUNC(dmin)
#else
#define NAMIN   BLASFUNC(smin)
#endif
#endif

int main(int argc, char *argv[]){

  FLOAT *x;
  blasint m, i;
  blasint inc_x=1;
  int loops = 1;
  int l;
  char *p;

  int from =   1;
  int to   = 200;
  int step =   1;

  double time1,timeg;

  argc--;argv++;

  if (argc > 0) { from     = atol(*argv);		argc--; argv++;}
  if (argc > 0) { to       = MAX(atol(*argv), from);	argc--; argv++;}
  if (argc > 0) { step     = atol(*argv);		argc--; argv++;}

  if ((p = getenv("OPENBLAS_LOOPS")))  loops = atoi(p);
  if ((p = getenv("OPENBLAS_INCX")))   inc_x = atoi(p);

  fprintf(stderr, "From : %3d  To : %3d Step = %3d Inc_x = %d Loops = %d\n", from, to, step,inc_x,loops);

  if (( x = (FLOAT *)malloc(sizeof(FLOAT) * to * abs(inc_x) * COMPSIZE)) == NULL){
    fprintf(stderr,"Out of Memory!!\n");exit(1);
  }

#ifdef __linux
  srandom(getpid());
#endif

  fprintf(stderr, "   SIZE       Flops\n");

  for(m = from; m <= to; m += step)
  {

   timeg=0;

   fprintf(stderr, " %6d : ", (int)m);


   for (l=0; l<loops; l++)
   {

   	for(i = 0; i < m * COMPSIZE * abs(inc_x); i++){
			x[i] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
   	}

    	begin();

    	NAMIN (&m, x, &inc_x);

    	end();

    	time1 = getsec();

	timeg += time1;

    }

    timeg /= loops;

    fprintf(stderr,
	    " %10.2f MFlops %10.6f sec\n",
	    COMPSIZE * sizeof(FLOAT) * 1. * (double)m / timeg * 1.e-6, timeg);
  }

  return 0;
}

// void main(int argc, char *argv[]) __attribute__((weak, alias("MAIN__")));