<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hi Miles,<br><br>This would great. CbcMain0 and CbcMain1 are where the best settings are kept and you really should use these.<br></div>
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br>It would nice also to add a clean interface to configure cuts, heuristics and pre-preprocessing in CBC (at least the most important options) (this would be translated to CbcMain1 parameters).<br>
<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">This would probably be a better way to call CBC from C++ too, since CbcMain0 and CbcMain1 are a functional but ugly way of calling the solver IMHO.<br>
<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Using opaque data types in C would also be nice to keep a low level of required includes.<br><br>Cheers,<br><br>Haroldo<br><br><br></div>
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">
On Mon, Mar 10, 2014 at 7:52 PM, Miles Lubin <span dir="ltr"><<a href="mailto:miles.lubin@gmail.com" target="_blank">miles.lubin@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hi all,<div><br></div><div>I'm planning on doing some significant restructuring on the Cbc C interface (<a href="https://projects.coin-or.org/Cbc/browser/trunk/Cbc/src/Cbc_C_Interface.h" target="_blank">https://projects.coin-or.org/Cbc/browser/trunk/Cbc/src/Cbc_C_Interface.h</a>), which doesn't seem to have received much attention in the past number of years. Before making any breaking changes, I wanted to share my plans and get feedback from potential users (and current users, if any). </div>
<div><br></div><div>The main redesign points are:</div><div>- Use CbcMain0/CbcMain1</div><div>- Drop LP-specific functionality (dual solutions, rays, etc.) -- Most of this was never even implemented, while Clp already has a fully functional C interface. </div>
<div>- Break 1-1 correspondence with C++ names, if appropriate. Some tweaking of the names could help for non-expert users. The C interface should be accessible to someone who isn't necessarily familiar with the C++ interface.</div>
<div>- Include unit tests.</div><div><br></div><div>Overall the goal is to have a lightweight, well documented interface that makes Cbc easy to access from outside of C++, including from dynamic languages like Python and Julia, following CoinMP's lead but included directly in Cbc.</div>
<div><br></div><div>Thanks,</div><div>Miles</div></div>
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<br></blockquote></div><br><br clear="all"><br>-- <br><span style="font-family:courier new,monospace">=============================================================<br>Haroldo Gambini Santos<br>Computing Department<br>Universidade Federal de Ouro Preto - UFOP<br>
email: haroldo [at ] <a href="http://iceb.ufop.br" target="_blank">iceb.ufop.br</a><br>home/research page: <a href="http://www.decom.ufop.br/haroldo/" target="_blank">www.decom.ufop.br/haroldo</a><br></span>
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