Programmer Guide/SPU Reference/LENGTH: Difference between revisions

Revision as of 13:40, 2 May 2011

Number of elements in A

If A is a numerical data element (number, vector or matrix), the dimensions of A are stored in the outputs.

Out	Description
`Y`	number of rows; 1 if `A` is a number and >1 otherwise
`NROW`	number of rows; 1 if `A` is a number and >1 otherwise
`NCOL`	number of columns; 1 if `A` is a number or vector and >1 otherwise
`N`	number of elements = number of rows * number of columns

with: 0 ≤ i < length of A_vector

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:{{SUBPAGENAME}}}}
 Number of elements in <var>A</var>
-==<code>[SPU ABS <var>A</var> OUT <var>Y</var>]</code>==
+==<code>[SPU LENGTH <var>A</var> OUT <var>Y NROW NCOL N</var>]</code>==
+If <var>A</var> is a numerical data element (number, vector or matrix), the dimensions of <var>A</var> are stored in the outputs.
 {|class="einrahmen"
-!In !!Out !!Description
+!Out !!Description
 |-
-|<var>A<sub>number</sub></var>
+|<var>Y</sub></var> || number of rows; 1 if <var>A</var> is a number and &gt;1 otherwise
-|<var>Y<sub>number</sub></var>
-|<var>Y</var> = <nowiki>|</nowiki><var>A</var><nowiki>|</nowiki>
 |-
-|<var>A<sub>vector</sub></var>
+|<var>NROW</sub></var> || number of rows; 1 if <var>A</var> is a number and &gt;1 otherwise
-|<var>Y<sub>vector</sub></var>
+|-
-|<var>Y</var>[i] = <nowiki>|</nowiki><var>A</var>[i]<nowiki>|</nowiki>
+|<var>NCOL</sub></var> || number of columns; 1 if <var>A</var> is a number or vector and &gt;1 otherwise
+|-
+|<var>N</sub></var> || number of elements = number of rows * number of columns
 |}
 with: 0 &le; i &lt; length of <var>A<sub>vector</sub></var>
 ;See also:
 <[[../#Signal Processing Atoms|SP-atoms]]>
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