Solve Boundary Value DAEs w/ COLDAE

[azev77]

Hi and thank you for this package! Is there a change you can extend it to solve boundary value DAEs w/ COLDAE?

[luchr]

Thank you for your question. I can find this version of COLDAE

http://www.cs.ubc.ca/spider/ascher/coldae.f

Unfortunately I cannot find any license informations. Do you have links/infos about how this file is licensed?

At first sight a "change" (in the sense of: providing also an interface to COLDAE) seems doable.

[azev77]

Thanks. It’s also on Netlib: http://www.netlib.no/netlib/ode/index.html

is there a license for netlib?

[waltsims]

I thought perhaps it would inherit the license from colsys, but that code seems to be also unlicensed. Would it make sense to contact Uri directly to inquire?

[luchr]

Oh yes, I misinterpreted a LGPL part in colsys which only covers part of the code.

1. I'll ask Prof. Ascher (via email) for a statement about the license
2. If there is a (nice) license I'll try to write also an interface for COLDAE (perhaps in July) or wait for Pull Requests ;-)

[luchr]

1. Prof. Spiteri and Prof. Ascher have answered: They will post/upload a new version of COLDAE to netlib with the LGPL license prepended.

2. The situation with COLNEW is still unresolved. Maybe I replace COLNEW with COLDAE because there is the claim in the code

   with ny=0, the code is essentially identical to the code colnew

   whatever "essentially" means.