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Mathematics of Computation

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On the computation of modified Bessel function ratios


Authors: Walter Gautschi and Josef Slavik
Journal: Math. Comp. 32 (1978), 865-875
MSC: Primary 33A40
MathSciNet review: 0470267
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Abstract: A detailed comparison is made between a continued fraction of Gauss, and one of Perron, for the evaluation of ratios of modified Bessel functions $ {I_v}(x)/{I_{v - 1}}(x),x > 0$, $ v > 0$. It will be shown that Perron's continued fraction has remarkable advantages over Gauss' continued fraction, particularly when $ x > > v$.


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DOI: https://doi.org/10.1090/S0025-5718-1978-0470267-9
Article copyright: © Copyright 1978 American Mathematical Society