Difference between revisions of "Instruction Set/widensf"
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{{DISPLAYTITLE:widensf}} | {{DISPLAYTITLE:widensf}} | ||
| − | <div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation| | + | <div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|speculable]] [[Encoding|exu stream]] [[Decode|exu block]] [[Phasing|compute phase]] operation [[Domains|in the signed fixed point value domain]] <br /> |
'''native on:''' [[Cores|all]]<br /> | '''native on:''' [[Cores|all]]<br /> | ||
</div> | </div> | ||
Revision as of 09:31, 9 February 2015
speculable exu stream exu block compute phase operation in the signed fixed point value domain
native on: all
Double the scalar width of a signed fixed point value.
The reason a special widen for fixed point is needed is because the fixed point is defined relative to the most significant side. Widening increases precision, but doesn't extend the value range.
The natively available byte widths on all Cores are 1, 2, 4, 8, and on the high end also 16.
operands: like Widen xx:2x
| Core | In Slots | Latencies |
|---|---|---|
| Tin | E0 | b:h=1 h:w=1 w:d=1 d:q=2 |
| Copper | E0 E1 | b:h=1 h:w=1 w:d=1 d:q=2 |
| Silver | E0 E1 E2 E3 | b:h=1 h:w=1 w:d=1 d:q=2 |
| Gold | E0 E1 E2 E3 E4 E5 E6 E7 | b:h=1 h:w=1 w:d=1 d:q=2 |
| Decimal8 | E0 E1 E2 E3 | b:h=1 h:w=1 w:d=1 d:q=2 |
| Decimal16 | E0 E1 E2 E3 | b:h=1 h:w=1 w:d=1 d:q=2 |
Instruction Set, alphabetical, Instruction Set by Category, Instruction Set, sortable, filterable
