Example

   The following example converts an ASCII relative time string to
   its binary equivalent.

   utc_t      utc;
   char       str[UTC_MAX_STR_LEN];

   /*
    * Relative time of 333 days, 12 hours, 1 minute, 37.223 seconds
    * Inaccuracy of 50.22 sec. in the format: -333-12:01:37.223I50.22
    */

   (void)strcpy((void *)str,
                "-333-12:01:37.223I50.22");

   utc_mkascreltime(&utc,   /* Out: Binary utc               */
                    str);   /* In:  String                   */