# Accurate bessel functions Jn(z), Hn (1)(z) and Hn (2)(z) of integer order and complex argument

## Description

Title of program: BESJYH Catalogue Id: ACYQ_v1_0 Nature of problem The Bessel function appears in a wide range of physical applications, and in particular where there is axial symmetry. The package contains complex function routines to calculate J_n(z), Y_n(z), H_n^(1)(z) and H_n^(2)(z) for integer n and complex z. CORRECTION SUMMARY: Vol:Year:Page 39:1986:303 "000A CORRECTION 30/09/85" "Accurate Bessel functions Jn(z), Yn(z), H(1)n(z) and H(2)n(z) of integer order and complex argument. (C.P.C. 17(1979)321)." R.W.B. Ardill; K.J.M. Moriarty Note: correction instructions are contained in source code Versions of this program held in the CPC repository in Mendeley Data ACYQ_v1_0; BESJYH; 10.1016/0010-4655(79)90060-2 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)