Bessel_k0_scaled

Definition:

$k0\_scaled = bessel\_k0\_scaled(x)$ evaluates an approximation to $e^xK_0\left( x\right)$ , where $K_0$ is a modified Bessel function of the second kind. The scaling factor $e^x$ removes most of the variation in $K_0\left( x\right)$ .

For more information please review the s18ccc function in the NAG document.

Parameters:

x (input, double): The argument x of the function. Constraint: x> 0.0.
$k0\_scaled$ (output, double): Approximation of $e^xK_0\left( x\right)$

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