From: "Andrew Hurrell" Newsgroups: comp.os.msdos.djgpp Subject: Re: Bessel Functions Date: Wed, 29 Sep 1999 22:15:20 +0100 Organization: Customer of Planet Online Lines: 19 Message-ID: <7stvh4$ndm$1@news7.svr.pol.co.uk> References: <7str8g$k1u$1 AT nnrp1 DOT deja DOT com> NNTP-Posting-Host: modem-89.astro.dialup.pol.co.uk X-Trace: news7.svr.pol.co.uk 938639716 23990 62.136.96.217 (29 Sep 1999 21:15:16 GMT) NNTP-Posting-Date: 29 Sep 1999 21:15:16 GMT X-Complaints-To: abuse AT theplanet DOT net X-Newsreader: Microsoft Outlook Express 4.72.3110.1 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com matthewodonnell AT my-deja DOT com wrote >I need various Bessel functions. Do they exist as C++ code somewhere in >downloadable form from some library? I already know about the numerical >recipes site. thanks. They are already in the libm that ships with DJGPP (This will set you up with j0, j1, jn, y0, y1, yn) If you need hankel functions then these are easily derived from j and y. If you want additional math functions then look at the cephes package on netlib Andrew PS if you use rhide don't forget to add libm to the search list for the info browser - this will give online help for the math functions as well