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From: Per Sandberg <per.sandberg@bredband.net>
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Newsgroups: comp.lang.ada
Subject: Re: Where I find Bessel function for Ada ?
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Date: Sat, 06 Dec 2008 23:37:25 +0100
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Date: 2008-12-06T23:37:25+01:00
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Had to do a bit of looking around before saying anything but after some 
looking and a bit of hacking a may say this:
* The GSL library contains what you are looking for.
* It is fairly simple to write a medium level binding to that library, 
especially using GCC/GNAT.
I could post my small experiments if there is any interest.
/Per


Nasser Abbasi wrote:
> "R. B. Love" <rblove@airmail.net> wrote in message 
> news:2008120222180516807-rblove@airmailnet...
>> On 2008-11-26 06:57:09 -0600, "Dmitry A. Kazakov" 
>> <mailbox@dmitry-kazakov.de> said:
>>
>>> Well, if there is no Ada code, then I would also consider to implement it
>>> from scrap. There is an excellent book "Mathematical Functions and Their
>>> Approximations" by Yudell L. Luke:
>>>
> .....
>> Do you work on comission?  That's a $700 book.
>>
> 
> That is the problem with using Ada for scientific software.
> 
> The language is great for scientific software implementation, but it comes 
> with limited number of related functions ready to use.
> 
> It is not practical for someone to implement these functions from scratch 
> each time they want to use one in their scientific application. It takes a 
> long time to develop robust mathematical functions.
> 
> Is it not possible to link to some C library which has the implementation of 
> this function? I am sure there is some C code out there which does this. 
> Write a binding to it?
> 
> Nasser
> 
>