A REMARK ON ALGORITHM-644 - A PORTABLE PACKAGE FOR BESSEL-FUNCTIONS OF A COMPLEX ARGUMENT AND NONNEGATIVE ORDER

Authors
AMOS DE
Citation
De. Amos, A REMARK ON ALGORITHM-644 - A PORTABLE PACKAGE FOR BESSEL-FUNCTIONS OF A COMPLEX ARGUMENT AND NONNEGATIVE ORDER, ACM transactions on mathematical software, 21(4), 1995, pp. 388-393
Citations number
3
Categorie Soggetti
Computer Sciences",Mathematics
Journal title
ACM transactions on mathematical software → ACNP
ISSN journal
00983500
Volume
21
Issue
4
Year of publication
1995
Pages
388 - 393
Database
ISI
SICI code
0098-3500(1995)21:4<388:AROA-A>2.0.ZU;2-5
Abstract
Algorithm 644 computes all major Bessel functions of a complex argumen t and of nonnegative order. Single-precision routine CBESY and double- precision routine ZBESY are modified to reduce the computation time fo r the Y Bessel function by approximately 25% over a wide range of argu ments and orders. Quick check (driver) programs that exercise the pack age are also modified to make tests more meaningful over larger region s of the complex plane.