/*
 * b36: routines to manipulate base-36 numbers (0-9a-z)
 *
 * a 3-digit base-36 number spans 0-46655, which is a perfectly
 * good range of seqence #'s for uucp workfiles. (On the Atari ST
 * and MS-DOS, filename limitations force the sequence #'s to be
 * 3 digits or less, so decimal & hexidecimal don't have enough
 * range to assure minimal collisions on a busy system.)
 */
#include <stdio.h>

/*
 * itob36() converts an integer into a 3-digit base-36 string, then returns
 * a pointer to that string.  The string is in static storage, so it
 * will be overwritten with each successive call to itob36().
 */
char *
itob36(num)
register num;
{
    static char nb[4];
    register x, dig;

    nb[x = 3] = 0;	/* work backwards up the string */
    do {
	dig = num%36;
	num /= 36;
	nb[--x] = (dig<10) ? (dig+'0') : ((dig-10)+'a');
    } while (x > 0);
    return nb;
} /* itob36() */