Repeated convolution of a continous uniform distribution

Good news for pw.mac users,

pw.mac is fixed now.  It can do this convolution problem correctly with or without abs_integrate loaded.  It was a programming bug. 
Since abs_integrate can do this problem and other problems faster I have it loading automatically now when pw is loaded.  Also there 
are other changes too.  The kabs() function kills abs_integrate without killing pw and labs() reloads abs_integrate.  Having 
abs_integrate loaded makes for better speed for this problem and the problems abs_integrate can do on its own. pw can do other 
problems which abs_integrate can't do.  If abs_integrate is loaded you can just use integrate() otherwise you have to call the 
appropriate pw function.

Rich


----- Original Message ----- 
From: "Richard Hennessy" <rich.hennessy at verizon.net>
To: "Barton Willis" <willisb at unk.edu>
Cc: "Maxima List" <maxima at math.utexas.edu>
Sent: Saturday, June 20, 2009 2:43 PM
Subject: Re: [Maxima] Repeated convolution of a continous uniform distribution


Better?  My code gets zero for an answer when trying to do the convolution function.  It doesn't even work.  I don't know why.

Rich



----- Original Message ----- 
From: "Barton Willis" <willisb at unk.edu>
To: "Richard Hennessy" <rich.hennessy at verizon.net>
Cc: "Maxima List" <maxima at math.utexas.edu>
Sent: Friday, June 19, 2009 7:51 PM
Subject: Re: [Maxima] Repeated convolution of a continous uniform distribution


Huh? There is no need to steal any code from abs_integrate: simply
load abs_integrate and use it.

Without modifying the code in abs_integrate, you can change the
integration methods that abs_integrate tries.

Of course, if you can write a better framework for extending integrate
or better versions of the functions in abs_integrate, go for it.

Barton


-----"Richard Hennessy" <rich.hennessy at verizon.net> wrote: -----


>Actually it can't since pw.mac is not independent of abs_integrate.mac
>yet. I would have to steal some code from abs_integrate like
>make_dummy and also some other stuff. In my code pwdefint just "punts" to
>abs_integrate.mac to get the answer.
>
>Rich


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