Programmer Guide/SPU Reference/DOT: Difference between revisions

Revision as of 09:29, 6 May 2011

Dot product of A and B.

In	Out	Description
`A_number`, `B_number`	`Y_number`	$Y=A.B$
`A_vector`, `B_vector`	`Y_number`	`Y` = $\sum _{i=0}^{n-1}A[i].B[i]$

with: n = length of A_vector

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:{{SUBPAGENAME}}}}
-Dot product of <var>A</var> and <var>B<var>.
+Dot product of <var>A</var> and <var>B</var>.
-==<code>[SPU RMS <var>A B</var> OUT <var>Y</var>]</code>==
+==<code>[SPU DOT <var>A B</var> OUT <var>Y</var>]</code>==
 {|class="einrahmen"
 !In !!Out !!Description
@@ Line 7: / Line 7: @@
 |<var>A<sub>number</sub></var>, <var>B<sub>number</sub></var>
 |<var>Y<sub>number</sub></var>
-|<var>Y</var> = <math>A.B|A|</math>
+|<math>Y=A.B</math>
 |-
-|<var>A<sub>vector</sub></var>
+|<var>A<sub>vector</sub></var>, <var>B<sub>vector</sub></var>
 |<var>Y<sub>number</sub></var>
-|<var>Y</var> = <math>\sqrt{\frac{1}{n}\sum_{i=0}^{n-1}A[i]^2}</math>
+|<var>Y</var> = <math>\sum_{i=0}^{n-1}A[i].B[i]</math>
 |}
 with: n = length of <var>A<sub>vector</sub></var>