24531904_j

操作 : if (PR[qp]) {
fp_check_target_register(f 1);
if (tmp_isrcode = fp_reg_disabled(f 1 , f 2 , f 3 , 0))
disabled_fp_register_fault(tmp_isrcode, 0);
}
if (fp_is_natval(FR[f 2 ]) || fp_is_natval(FR[f 3 ])) {
FR[f 1 ] = NATVAL;
} else {
if (neg_sign_form) {
tmp_res_hi = (!FR[f 2 ].significand{63}