Difference between revisions of "Instruction Set/neg"
From Mill Computing Wiki
| (3 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
{{DISPLAYTITLE:neg}} | {{DISPLAYTITLE:neg}} | ||
| − | <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 logical value domain]] [[Condition Code|that produces condition codes]]<br /> |
'''aliases:''' negs negsv <br /> | '''aliases:''' negs negsv <br /> | ||
'''native on:''' [[Cores|all]]<br /> | '''native on:''' [[Cores|all]]<br /> | ||
</div> | </div> | ||
| − | + | Integer arithmetic negation. Modulo overflow. | |
| + | |||
| + | For arithmetic negation in two complement values the only value that can overflow is the smallest possible number for the width. In modulo overflow it remains the same value. | ||
| + | |||
| + | |||
| + | |||
| + | |||
---- | ---- | ||
<code style="font-size:130%"><b style="color:#050">neg</b>(<span style="color:#009">[[Domains#op|op]]</span> <span title="belt operand from ops window">x</span>) → [[Domains#op|op]] r<sub>0</sub></code> | <code style="font-size:130%"><b style="color:#050">neg</b>(<span style="color:#009">[[Domains#op|op]]</span> <span title="belt operand from ops window">x</span>) → [[Domains#op|op]] r<sub>0</sub></code> | ||
Latest revision as of 09:33, 9 February 2015
speculable exu stream exu block compute phase operation in the logical value domain that produces condition codes
aliases: negs negsv
native on: all
Integer arithmetic negation. Modulo overflow.
For arithmetic negation in two complement values the only value that can overflow is the smallest possible number for the width. In modulo overflow it remains the same value.
operands: like Identity [xx:x]
| Core | In Slots | Latencies |
|---|---|---|
| Tin | E0 | 1 |
| Copper | E0 E1 | 1 |
| Silver | E0 E1 E2 E3 | 1 |
| Gold | E0 E1 E2 E3 E4 E5 E6 E7 | 1 |
| Decimal8 | E0 E1 E2 E3 | 1 |
| Decimal16 | E0 E1 E2 E3 | 1 |
Instruction Set, alphabetical, Instruction Set by Category, Instruction Set, sortable, filterable
