On 2007-02-23 16:35, Martin Manns wrote: > Hi, > > I am starting to use rationals and since I found no batteries included, > I tried out the mxNumber package. > > However, I get strange warnings on comparison operations > (which however seem to yield correct results): > > --- > $ python > Python 2.4.3 (#1, Jan 15 2007, 15:46:19) > [GCC 4.1.1 (Gentoo 4.1.1-r3)] on linux2 > Type "help", "copyright", "credits" or "license" for more information. >>>> from mx.Number import * >>>> a=Rational(0,1) >>>> a > 0/1 >>>> str(a) > '0.0' >>>> b=-5000000000000000000000000000000000000000000000000000000000 >>>> b > -5000000000000000000000000000000000000000000000000000000000L >>>> a==b > __main__:1: RuntimeWarning: tp_compare didn't return -1, 0 or 1 > False > --- > > How do I get rid of these warnings?
FYI: The next version of mxNumber will have this warning removed. > Is there any rational number library around that > 1) is comparably fast for large denominators > 2) allows deriving types from Rationals without wrapping? > > Regards > > Martin > > P.S. The respective mailing list does not like me, so that I try my > luck here. Why is that ? The egenix-user mailing is open for all our users. We do require registration to stop spam from reaching the list. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Apr 27 2007) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ :::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free ! :::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 -- http://mail.python.org/mailman/listinfo/python-list
