Illegal instruction or undefined symbol from import

[Kerry, Richard]

The only use I now for them is when you need to plot the sine of a sine.
Or possibly to calculate the frequency spectrum of this.

Ie 
x = a.sin( b.sin( y ) )

This is fundamental to Frequency Modulation.
I don't know if they apply anywhere else ?


Unhelpfully,
Richard.



-----Original Message-----
From: python-list-bounces+richard.kerry=siemens.com at python.org
[mailto:python-list-bounces+richard.kerry=siemens.com at python.org] On
Behalf Of Nick Maclaren
Sent: 05 July 2006 11:32
To: python-list at python.org
Subject: Re: Illegal instruction or undefined symbol from import


In article <llMqg.690$RG3.13402 at se2-cb104-9.zrh1.ch.colt.net>,
Mathias Waack <M.Waack at gmx.de> writes:
|> 
|> > There's 
|> > a lot of somewhat obscure mathematical stuff that got into the
standard
|> > C lib. How often do you need Bessel functions?
|> 
|> Maybe each day. What is a Bessel function?;)

Some people use them all the time; there are specific physical problems 
where they are fundamental.  I have never used them, in 40 years of
wide-ranging experience in the scientific computing arena!  


Regards,
Nick Maclaren.
-- 
http://mail.python.org/mailman/listinfo/python-list