A remark on Algorithm 644: “A portable package for Bessel functions of a complex argument and nonnegative order”

Authors:
D. E. Amos
Affiliations:
Sandia National Labs., Albuquerque, NM
Venue:
ACM Transactions on Mathematical Software (TOMS)
Year:
1995

Citing 2
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Remark on algorithm 644

ACM Transactions on Mathematical Software (TOMS)
Algorithm 644: A portable package for Bessel functions of a complex argument and nonnegative order

ACM Transactions on Mathematical Software (TOMS)

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ACM Transactions on Mathematical Software (TOMS)

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Abstract

Algorithm 644 computes all major Bessel functions of a complex argument and of nonnegative order. Single-precision routine CBESY and double-precision routine ZBESY are modified to reduce the computation time for the Y Bessel function by approximately 25% over a wide range of arguments and orders. Quick check (driver) programs that exercise the package are also modified to make tests more meaningful over larger regions of the complex plane.