unary_op
case unary_op: /* this could be any unary operation */
code = (ps.last_u_d ? unary_op : binary_op);
code = (ps.last_u_d ? unary_op : postop);
code = unary_op;
code = (ps.last_u_d ? unary_op : binary_op);
code = (ps.last_u_d ? unary_op : binary_op);
} else if ((op = unary_op(argv[0])) != -1) {