opnum
op = opnum(op);
op = opnum(op);
static int opnum(int);
#define MATCHOP(opnum, arg1, arg2) ((opnum == 0) ? (1) : \
(opnum == 1) ? ((arg1) == (arg2)) : \
(opnum == 2) ? ((arg1) <= (arg2)) : \
(opnum == 3) ? ((arg1) < (arg2)) : \
(opnum == 4) ? ((arg1) >= (arg2)) : \
(opnum == 5) ? ((arg1) > (arg2)) : 0 )