3.5.1.3.11 Bessel_j0

Bessel-j0-func

Definition:

, evaluates the Bessel function of the first kind, . The approximation is based on Chebyshev expansions.

For more information please review the s17aec function in the NAG document.

Parameters:

x (input, double)

The argument x of the function.

j0 (output, double)

The approximation of the Bessel function.