Difference between revisions of "Instruction Set/widen"

Latest revision as of 09:30, 9 February 2015

aliases: widenu
native on: all

Double the scalar width of an unsigned integer.

Zero extends the upper half.

The natively available byte widths on all Cores are 1, 2, 4, 8, and on the high end also 16.

widen(op v) → op r₀

widen(op v1, op v2) → op r₀

operands: like Widen xx:2x

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:widen}}
-<div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|realizing]]&nbsp;&nbsp;[[Encoding|exu stream]]&nbsp;&nbsp;[[Decode|exu block]]&nbsp;&nbsp;[[Phasing|compute phase]]&nbsp;&nbsp; operation&nbsp;&nbsp; [[Domains|in the logical value domain]]&nbsp;&nbsp;<br />
+<div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|speculable]]&nbsp;&nbsp;[[Encoding|exu stream]]&nbsp;&nbsp;[[Decode|exu block]]&nbsp;&nbsp;[[Phasing|compute phase]]&nbsp;&nbsp; operation&nbsp;&nbsp; [[Domains|in the logical value domain]]&nbsp;&nbsp;<br />
 '''aliases:''' widenu <br />
 '''native on:''' [[Cores|all]]<br />
 </div>
-widen to double width
+Double the scalar width of an unsigned integer.
+Zero extends the upper half.
+The natively available byte widths on all [[Cores]] are 1, 2, 4, 8, and on the high end also 16.
 ----
 <code style="font-size:130%"><b style="color:#050">widen</b>(<span style="color:#009">[[Domains#op|op]]</span> <span title="belt operand from ops window">v</span>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>