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Although few of the integration codes are Fortran 90, you can write a wrapper around them to make it less obviously 'Fortran 77' - the wrapper, for example, can deal with allocating the various workspace arrays. You then have access to a wealth of ODE codes.
> Message Received: Mar 12 2006, 09:43 AM
> From: "Alan Miller" <[log in to unmask]>
> To: [log in to unmask]
> Cc:
> Subject: Re: Fortran source code for "n" coupled ODEs
>
> Sorry, Suresh, I cannot help.
> I was a statistician before I retired in 1994 - I rarely encountered DE's.
>
> Cheers
> Alan Miller
> Retired - formerly CSIRO statistician
> Melbourne, Victoria
> web site: http://www.users.bigpond.net.au/amiller/
>
> ----- Original Message -----
> From: "Suresh Seetharam" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, March 11, 2006 4:53 AM
> Subject: Fortran source code for "n" coupled ODEs
>
>
> > Hi,
> >
> > I was looking for any established public domain f90 source code which can
> > solve
> > a set of coupled ODEs of the form:
> >
> > dy/dt=Wy
> >
> > where y is a vector of unknowns and W is a n x n coefficient matrix. I
> > have
> > the subroutine which passes the n x n W matrix.
> >
> > I would greatly appreciate any suggestions.
> >
> > Thank you for your valuable time.
> >
> >
> > with best regards,
> > Suresh
>
>
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