A procedure for determining the largest computable order of Bessel functions of the second kind and Hankel functions

Routines for the computation of Bessel functions of the second kind, Y/sub n/(z), and Hankel functions H/sub n//sup (1/)(z) and H/sub n//sup (2/)(z), may exhibit numerical overflow problems for large order n and small complex or real arguments z. An upper limit for the largest calculable order of these functions for a given argument, is derived.<
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