On Mar 4, 12:17 am, Robert Bradshaw <[email protected]> wrote: > On Wed, Mar 2, 2011 at 5:16 PM, kcrisman <[email protected]> wrote: > > > On Mar 2, 5:05 pm, achrzesz <[email protected]> wrote: > >> I'm not sure if this is relevant but > >> sage: power_mod(2,-1,990) > >> also gives helpful error message > >> and checking for exponent -1 is not necessary > >> A Ch > > > Relevant, but of course what I'm really getting at is exactly how to > > deal with a user who does the original thing (mod(2,990)^-1 ) and is > > not immediately sure what went wrong because of the lack of error > > message content. Particularly if it is in the middle of some long > > script where they forgot to check a gcd condition, for instance. For > > me personally it is not that big a deal :) > > > Any thoughts by those who've worked in integer_mod.pyx? > > Wow, that's a pretty bad bug. I'm amazed it's been there so long, I > guess I've only inverted invertable elements all this time... I'll fix > it right away. Is there a ticket for it yet?
I don't think so, because I was hesitant to mess with mpz stuff. Thanks! -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
