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companion (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: linalgebra

Requires: MathScript RT Module


c = companion(a)

Legacy Name: compan


Returns the companion matrix to a polynomial.



Name Description
a Specifies the coefficients of a polynomial in descending order of power. The first element in a is the leading coefficient of the polynomial, which is 1 for a monic polynomial. Therefore, an input vector of size n produces a companion matrix of size (n-1)-by-(n-1). a is a vector.


Name Description
c Returns the companion matrix of a. The size of c equals the order of a.


The following table lists the support characteristics of this function.

Supported in the LabVIEW Run-Time Engine Yes
Supported on RT targets Yes
Suitable for bounded execution times on RT Not characterized


A = [1, 2, 3, 4]
C = companion(A)


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