Programmer Guide/SPU Reference/LENGTH: Difference between revisions

Latest revision as of 07:31, 13 October 2015

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

Note: The output values are assigned during the SPU initialization and cannot be changed during execution.

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:{{SUBPAGENAME}}}}
+{{SPAtomTemplate}}
 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</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</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</var> || number of columns; 1 if <var>A</var> is a number or vector and &gt;1 otherwise
+|-
+|<var>N</var> || number of elements = number of rows * number of columns
 |}
-with: 0 &le; i &lt; length of <var>A<sub>vector</sub></var>
+Note: The output values are assigned during the SPU initialization and cannot be changed during execution.
 ;See also:
 <[[../#Signal Processing Atoms|SP-atoms]]>
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