Intel Itanium 9150M, Manual

Page: 252 / 420

Volume 3: Instruction Reference 3:243
setf
Operation: if (PR[ qp ]) {
fp_check_target_register( f
1
);
if (tmp_isrcode = fp_reg_disabled( f
1
, 0, 0, 0))
disabled_fp_register_fault(tmp_isrcode, 0);
if (!GR[ r
2
].nat) {
if (single_form)
FR[ f
1
] = fp_mem_to_fr_format(GR[ r
2
], 4, 0);
else if (double_form)
FR[ f
1
] = fp_mem_to_fr_format(GR[ r
2
], 8, 0);
else if (significand_form) {
FR[ f
1
].significand = GR[ r
2
];
FR[ f
1
].exponent = FP_INTEGER_EXP;
FR[ f
1
].sign = 0;
} else { // exponent_form
FR[f1].significand = 0x8000000000000000;
FR[f1].exp = GR[r2]{16:0};
FR[f1].sign = GR[r2]{17};
}
} else
FR[ f
1
] = NATVAL;
fp_update_psr( f
1
);
}
Interruptions:
Illegal Operation fault Disabled Floating-point Register fault