Re: confusion about real vs not real zero

Sorry, the "workaround" was in regard to complex numbers. How to
support them in a minimal way so that programs that dont use them are
not blocked by lack of full support.

On Fri, Nov 19, 2021 at 3:20 PM Sam Tobin-Hochstadt <[email protected]> wrote:
>
> On Fri, Nov 19, 2021 at 3:13 PM Stephen Chang <[email protected]> wrote:
> >
> > Lol I read that page and still didn't get it.
> >
> > Any opinion for a potential workaround?
>
> It depends what you mean by "workaround". The distinction between
> exact and inexact numbers is pretty deeply built-in to how Racket
> numbers work, so there's not going to be a simple workaround that
> fixes this issue.
>
> For RacketScript I think the choices are (a) use floats for everything
> and have semantics that diverge substantially from Racket or (b) have
> a separate implementation of integers that's not JS numbers (maybe JS
> bigints would work).
>
> Sam
>
> >
> > On Fri, Nov 19, 2021 at 3:08 PM Sorawee Porncharoenwase
> > <[email protected]> wrote:
> > >
> > > I had this exact same question when I looked at the RacketScript issue lol.
> > >
> > > The answer is https://docs.racket-lang.org/reference/numbers.html:
> > >
> > > a complex number with an exact zero imaginary part is a real number.
> > >
> > > Since 0.0 is not exact, 0.0i is not a real number.
> > >
> > > On Fri, Nov 19, 2021 at 11:59 AM Stephen Chang <[email protected]> wrote:
> > >>
> > >> In the following, why is the first considered a real number but the
> > >> second considered not real
> > >>
> > >> > (real? 0.0+0i)
> > >> #t
> > >> > (real? 0.0+0.0i)
> > >> #f
> > >>
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