From: Brian Gough <bjg@network-theory.co.uk>
To: redonnetNO@SPAMlgmt.ups-tlse.fr
Cc: gsl-discuss@sourceware.cygnus.com
Subject: Re: Some (probably) ridiculous questions
Date: Wed, 19 Dec 2001 13:20:00 -0000 [thread overview]
Message-ID: <15173.56028.740003.364874@debian> (raw)
In-Reply-To: <01070611531200.01910@lgmt-fab5.ups-tlse.fr>
Jean-Max Redonnet writes:
> Sorry, if this point is obvious, but I'm not very familiar with GSL and I
> would like to use it in the right way.
>
> My question is : How to declare a function of multiple variables ?
>
> I manage with parametric curves and surfaces, so I need functions of one or
> two parameters. Futhermore This functions should be vectorial.
> For example : I need to deal with a ruled surface.
Hello,
The gsl_function type is mainly designed for interfacing to the
univariate gsl routines. It is not really a general facility so it
does not handle other cases that are not used in the library, such as
surfaces.
The way to handle this sort of situation is,
-- define your own surface function type in the way that you normally
would in your C-programs
-- if you need to use a gsl routine, for example to integrate along a
line, define a function to create the appropriate gsl_function by
mapping from your surface type.
Philosophically, calls to GSL routines, and the GSL types, can be at a
"lower-level" than your program.
regards
Brian Gough
next prev parent reply other threads:[~2001-12-19 13:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-19 13:20 Jean-Max Redonnet
2001-12-19 13:20 ` Brian Gough [this message]
2001-12-19 13:20 ` Jean-Max Redonnet
2001-12-19 13:20 ` Brian Gough
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