bessel (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Requires: MathScript RT Module

Syntax

jv = bessel(v, x)

jv = bessel(v, x, 1)

[jv, error] = bessel(v, x)

[jv, error] = bessel(v, x, 1)

Description

Computes the Bessel function of the first kind of a given order.

Inputs

Name Description
v Specifies the order of the Bessel function. v is a real, double-precision, floating-point positive scalar, vector, or matrix.
x Specifies the value for which you want to compute the Bessel function. x is a real or complex, double-precision, floating-point scalar, vector, or matrix.
1 Scales the computation. bessel_j(v, x, 1) scales bessel_j(v, x) by exp(-abs(imag(x))).

Outputs

Name Description
jv Returns the Bessel function of the first kind. jv is a real or complex, double-precision, floating-point scalar, vector, or matrix.
error Returns error information about the evaluation of the Bessel function. error is a matrix of integers in which each element can return the following values.

 0 Indicates that no error occurred. 1 Indicates that you specified invalid inputs. 2 Indicates that the result is too large for the data type of jv. Use the scaling option 1. 3 Indicates that LabVIEW achieved less than half the machine accuracy in the calculation because |x| or v is greater than approximately 1.3E8. 4 Indicates that the result is meaningless because |x| or v is greater than approximately 1.8E16. 5 Indicates that the calculation did not reach the termination condition so LabVIEW did not complete the calculation.

Details

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