/* C O N S T A N T S F O R E X P R E S S I O N H A N D L I N G */ extern long mach_long_sign; /* sign bit of the machine long */ extern arith max_int, /* maximum integer on target machine */ wrd_bits, /* number of bits in a word */ max_intset; /* largest value of set of integer */ extern char *maxint_str; /* string representation of maximum integer */