famin Operation Font Conventions
if (PR[qp]) {
fp_check_target_register;
if (tmp_isrcode = fp_reg_disabled(f1, f2, f3, 0))
disabled_fp_register_fault(tmp_isrcode, 0);

if (fp_is_natval( [f2]) || fp_is_natval(FR[f3])) {
FR[f1] = NATVAL;
} else {
fminmax_exception_fault_check(f2, f3, sf, &tmp_fp_env);
if (fp_raise_fault(tmp_fp_env))
fp_exception_fault(fp_decode_fault(tmp_fp_env));
tmp_left = fp_reg_read(FR[f2]);
tmp_right = fp_reg_read(FR[f3]);
tmp_left.sign = FP_SIGN_POSITIVE;
tmp_right.sign = FP_SIGN_POSITIVE;
tmp_bool_res = fp_less_than(tmp_left, tmp_right);
FR[f1] = tmp_bool_res ? FR[f2] : FR[f3];
fp_update_fpsr(sf, tmp_fp_env);
}

fp_update_psr(f1);
}