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3.5.1.3.15 Bessel_k0
Definition:
/math-8274cc04972a92dbe65434769599d676.png?v=0 "k0 = bessel\_k0(x)")
evaluates an approximation to the modified Bessel function of the second kind,/math-26a694e462007bb777ecf1e00f490491.png?v=0 "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.