On Tuesday, November 24, 2015 at 7:39:53 AM UTC-8, steven roumajon wrote: > > Hi, > > For obscure reasons, I tried modulo with floats with sage. > I had an unexpected result. > > In sage: > sage: 0.257%0.5 > -0.243000000000000 > > Tried under python: > >>> 0.257%0.5 > 0.257 >
The sage behaviour follows mpfr_remainder (which it uses); see http://www.mpfr.org/mpfr-current/mpfr.html#Integer-Related-Functions . It looks like the Python floats (which don't use mpfr) use something corresponding to mpfr_fmod. The behaviour is properly documented (although perhaps relatively difficult to find). Try sage: a=1.0 sage: a.__mod__? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
