On Thu, May 12, 2011 at 10:19 PM, Ondrej Certik <ond...@certik.cz> wrote: > On Thu, May 12, 2011 at 7:40 PM, Ronan Lamy <ronan.l...@gmail.com> wrote: >> Le jeudi 12 mai 2011 à 19:22 -0700, Ondrej Certik a écrit : >>> On Thu, May 12, 2011 at 5:28 PM, Ronan Lamy <ronan.l...@gmail.com> wrote: >>> > Le jeudi 12 mai 2011 à 16:06 -0700, Ondrej Certik a écrit : >>> >> On Thu, May 12, 2011 at 3:49 PM, Aaron Meurer <asmeu...@gmail.com> wrote: >>> >> > Hi. >>> >> > >>> >> > There was a discussion over at >>> >> > http://code.google.com/p/sympy/issues/detail?id=1721 to rename the >>> >> > Real class to Float, because the name fits the class better. The >>> >> > reasoning is that Real represents floating point numbers, not any real >>> >> > number like sin(1) or 2*pi, and it is confusing to have the subtle >>> >> > difference between Real and real in the docs. See the discussion over >>> >> > at that issue page for more info. >>> >> > >>> >> > How do people feel about this? If it were to happen, it would happen >>> >> > in the next release, which also breaks some other things in terms of >>> >> > backwards compatibly. >>> >> >>> >> It seems that most code uses some variation of Real already: >>> >> >>> >> Sage: uses RealField and RealLiteral: >>> >> >>> >> sage: a = 1.345 >>> >> sage: type(a) >>> >> <type 'sage.rings.real_mpfr.RealLiteral'> >>> >> >>> >> >>> >> Mathematica uses "Real": >>> >> http://reference.wolfram.com/mathematica/ref/Real.html >>> > >>> > And their "Possible issues" section can be summed up with "Reals aren't >>> > reals, reals aren't Reals". Do we need to repeat others' mistakes? >>> > >>> > Anyway, both Python and numpy call floats "float" which, I think, trumps >>> > compatibility with Sage and Mathematica. Maple and Maxima use "float" as >>> > well. >>> >>> If Maple + Maxima both use float, I am ok with that. Do you have some >>> reference for that? I didn't manage to find one for Maple. >> >> For Maple: >> http://www.maplesoft.com/support/help/Maple/view.aspx?path=float >> >> For Maxima: >> http://maxima.sourceforge.net/docs/manual/en/maxima_10.html > > Thanks. This looks good. I am ok with Float too. If it is not too > hard, we can deprecate Real(), e.g. something like: > > class Real(Basic) > > def __eval__ /or __new__/ () > deprecated > return Float(*args) > > Ondrej >
Yeah, let's do that. Aaron Meurer -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
