#include <grass/gis.h>

int 
get_range (struct Cell_stats *statf, CELL *min, CELL *max, int zero)
{
    long count;
    int any;
    CELL cat;

    any = *min = *max = 0;

    G_rewind_cell_stats (statf);
    while(!any && G_next_cell_stat (&cat, &count, statf))
    {	
	if (zero || cat) any = 1;
    }
    if (!any)
	return 0;
    *min = *max = cat;

    while (G_next_cell_stat (&cat, &count, statf))
    {
	if (zero || cat)
	    *max = cat;
    }
    return 1;
}