On Wed, May 4, 2011 at 2:18 PM, Matt Peddie <mped...@gmail.com> wrote:
> Liam, > > On Wed, May 04, 2011 at 10:20:42AM -0400, Liam Healy wrote: > > Unless I'm misunderstanding this request, this is already possible, in > > fact I'd regard it as the basic usage. Perhaps you are thrown off by > > the with-ode-integration macro and example. > > Great! I followed the example to begin with, so that was my starting > point. > > > I made up this macro in order to easily accommodate the case of > > non-array usage in the ODE solvers, because I wanted to show a simple > > example with scalars. However if you look at how that macro expands, > > there is a symbol #:DEP that is bound to a foreign array with the > > appropriate dimensions: > > > > [ macro definition ] > > > > So what you want to do is mimic this form, but instead define your > > foreign array directly. Is this what you're asking about? If it's an > > issue of CL array vs. foreign array, then you can use #'cl-array or > > just copy it over at the beginning and end. > > Thanks. I saw the way that DEP works within the macro, and I rewrote it > a few times in an attempt to pass around the array directly and use > grid:gref inside my dynamics function. I guess I just need to try a few > more things (like I said, newbie here). I want to use the foreign array > and avoid copying. > > > P.S. Please join the mailing list to post. Thank you. > > I joined right after I got the `your message needs to be approved' mail; > sorry. > > Matt > Good. Having said all that, I think there is definitely room for a more meaningful and more general macro than with-ode-integration. Though I'd like GSLL to be easier to use than GSL, at least calling make-ode-stepper, make-y-control, make-ode-evolution, apply-evolution, etc. on your own isn't any worse than GSL. And the macro expansion is what I would use as a "tutorial"; I understand for a CL newcomer it's still a tough task. Liam
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