#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>

void my_initrand() /* versione mia, che usa secondi e microsecondi */
{
  struct timeval tt1;
  struct timezone ttz;
  int tseed;

  gettimeofday(&tt1,&ttz);
  tseed = (int) tt1.tv_sec + (int) tt1.tv_usec;
  srand( (unsigned)(tseed) );
}

float randfloat()
{
    return rand() / ((float)RAND_MAX +  1.);
}