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- Path: sparky!uunet!spool.mu.edu!enterpoop.mit.edu!bloom-picayune.mit.edu!athena.mit.edu!cai
- From: cai@athena.mit.edu (Liang-Wu Cai)
- Subject: Algorithm(s) need for Bessel functions
- Message-ID: <1993Jan25.201447.2082@athena.mit.edu>
- Sender: news@athena.mit.edu (News system)
- Nntp-Posting-Host: barker-6-7.mit.edu
- Organization: Massachusetts Institute of Technology
- Date: Mon, 25 Jan 1993 20:14:47 GMT
- Lines: 23
-
-
- Dear netter,
-
- I am in need (badly) of an accurate algorithm Bessel functions of various
- kinds with real argument and integer order. What I need actually is a
- algorithm which is able to provide the result with at least 7 significant
- digits for J_n (z) and Y_n (z) with n <=100 and z <= 100. Please note this
- requires a relative error crition, though some absolute critera may be
- incorperated with the only purpose to prevent possible underflows. The algoriths
- may be in FORTRAN or C, or some easy-to-understant "psuedo-code".
-
- The method in "Numerical Recipes" fails to give out any error information, and
- collapes somewhere. I can't find any others.
-
- Since I need it badly, I may be required to write one for my own. So suggestions
- on how to write scuh a function also welcome.
-
- Thanks in advance.
-
- Please e-mail me at "cai@athena.mit.edu"
-
-
- Liang-Wu Cai
-