3.5.1.3.21 besseli

Besseli-func

Modified Bessel function of first kind. For more information please review the s18dec function in the NAG document.

Syntax

complex besseli( double nu, complex z[, int scale] )

Parameters

nu

a real number that specifies the function order

z

the argument z of the function

scale

scale option. 0 = No scaling; 1 = Scale the output of besseli by exp(-abs(real(Z)))

Return

Returns value of the modified Bessel function of the first kind

Example

See Also

J0, besselj