Programmer Guide/SPU Reference/POW: Difference between revisions

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{{DISPLAYTITLE:{{SUBPAGENAME}}}}
{{DISPLAYTITLE:{{SUBPAGENAME}}}}
====POW====
=====Usage:=====
<code>POW <var>A</var> <var>B</var></code>
=====Inputs:=====
{|
|-
|A
|number or vector
|-
|B
|number or vector
|}
=====Outputs:=====
{|
|-
|<var>Y</var>
|number or vector (same type as A)
|}
=====Function:=====
Compute <var>A</var> to the power of <var>B</var>.
Compute <var>A</var> to the power of <var>B</var>.
 
==<code>[SPU POW <var>A B</var> OUT <var>Y</var>]</code>==
{|
{|class="einrahmen"
!In !!Out !!Description
|-
|-
|if A and <var>B</var> are numbers:
|<var>A<sub>number</sub></var>, <var>B<sub>number</sub></var>
|Y = <var>AB</var>
|<var>Y<sub>number</sub></var>
|<var>Y</var> = <var>A</var> ^ <var>B</var>
|-
|-
|if A is a vector and <var>B</var> a number:
|<var>A<sub>vector</sub></var>, <var>B<sub>number</sub></var>
|Y[i] = <var>A</var>[i]<var>B</var>
|<var>Y<sub>vector</sub></var>
|<var>Y</var>[i] = <var>A</var>[i] ^ <var>B</var>
|-
|-
|if A and <var>B</var> are vectors:
|<var>A<sub>vector</sub></var>, <var>B<sub>vector</sub></var>  
|Y[i] = <var>A</var>[i]<var>B</var>[i]
|<var>Y<sub>vector</sub></var>
|<var>Y</var>[i] = <var>A</var>[i] ^ <var>B</var>[i]
|}
|}
 
with: 0 &le; i &lt; length of <var>A<sub>vector</sub></var>
If <var>A</var>|<var>A</var>[i] is negative, <var>B</var>|<var>B</var>[i] must be an integer (automatic truncation of <var>B</var>)
;See also:
 
<[[../#Signal Processing Atoms|SP-atoms]]>
If <var>B</var>|<var>B</var>[i] is negative, <var>A</var>|<var>A</var>[i] must be a nonzero value (otherwise result is set to <code>0</code>)
<!-- AN, 2.5.2011 -->

Latest revision as of 12:32, 2 May 2011

Compute A to the power of B.

[SPU POW A B OUT Y]

In Out Description
Anumber, Bnumber Ynumber Y = A ^ B
Avector, Bnumber Yvector Y[i] = A[i] ^ B
Avector, Bvector Yvector Y[i] = A[i] ^ B[i]

with: 0 ≤ i < length of Avector

See also

<SP-atoms>

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