Bessel_k0

Definition:

\(k0 = bessel\_k0(x)\) evaluates an approximation to the modified Bessel function of the second kind,\(K_0\left( x\right)\). The function is based on Chebyshev expansions.

For more information please review the s18acc function in the NAG document.

 

Parameters:

x (input, double)

The argument x of the function. Constraint: x> 0.0.

k0 (output, double)

Approximation of the modified Bessel function of the second kind.