On Tuesday, November 11, 2014 11:55:49 PM UTC+1, Volker Braun wrote: > > What kind of error states are we talking about? divide by zero and out of > memory? > > Exactly, that is exactly the kind of stuff Victor mentioned.
> IMHO a C++ library should just throw C++ exceptions, thats what they are > here for. If only for better readability -> less bugs. If you declare > methods with "except +" to Cython then they will automatically be converted > into Python exceptions, so its also very convenient for us. Pynac uses that > all the time. > > Pretty much the only potential downside are rumors that exceptions might > possibly hinder the optimizer. Though I've never seen that in a reasonable > benchmark. While that is certainly a possibility, it would just be an > optimizer bug. All reasonable C++ compilers uses a zero-cost model so its > at least as fast as handling / returning some error flag. What _is_ > expensive is when an exception occurs, but in C++ you are not supposed to > use exceptions for program flow like in Python. > > > > On Tuesday, November 11, 2014 10:15:44 PM UTC, Jean-Pierre Flori wrote: >> >> Dear all, >> >> As you must have noticed, Victor Shoup just released a new thread safe >> version of NTL. >> >> He also took the opportunity to ask me (and surely a bunch of other >> people) what would be expected from exception handling in NTL >> Currently NTL just prints something and then aborts. >> Note that we patch that in Sage to call one of our own functions and >> avoid aborting. >> I'm no C++ expert and don't usually play with exceptions, so I don't have >> anything that sart to say. >> But your comments/ideas/suggestions are more than welcomed. >> I can gather them and forward them back to Victor. >> >> Best, >> JP >> > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
