Difference between revisions of "Instruction Set/left"

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construct a bool vector with N leading false, or count leading false in a bool vector
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Count leading false in or construct bool vector with leading false.
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<code style="font-size:130%"><b style="color:#050">left</b>(<span style="color:#009">[[Domains#op|op]]</span> <span title="belt operand from ops window">x</span>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
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<code style="font-size:130%"><b style="color:#050">left</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>
 
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeLeftv|like Leftv XX:i]]
 
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeLeftv|like Leftv XX:i]]
 
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This counts the leading false elements in a bool vector.<br />
  
 
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<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeLefts|like Lefts xx:X]]
 
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeLefts|like Lefts xx:X]]
 
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Constructs a bool vector with w elements of which the leading x elements are false and the rest true.<br />
  
 
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{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"

Revision as of 18:51, 20 December 2014

realizing  exu stream  exu block  compute phase   operation   in the logical value domain  

native on: all

Count leading false in or construct bool vector with leading false.


left(op v) → op r0

operands: like Leftv XX:i

This counts the leading false elements in a bool vector.

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

left(op x, width w) → op r0

operands: like Lefts xx:X

Constructs a bool vector with w elements of which the leading x elements are false and the rest true.

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