Re: Help with linspace

[michele]

On 01/06/2018 07:20 PM, Daniel J Sebald wrote:
> On 01/06/2018 11:04 AM, Joel Dahne wrote:
> > Ben Abbott writes:
> [snip]
> > > Using R2016a ...
> > >
> > > linspace(-0, 0, 5)
> > >
> > > ans =
> > >
> > >       0     0     0     0     0
> > >
> > > Ben
> >
> > Matlab does not show the sign of 0. In fact it does indeed return [-0,
> > 0, 0, 0, 0]. An easy way to check is
> >
> > 1./(linspace(-0, 0, 5))
> >
> > ans =
> >
> >    -Inf   Inf   Inf   Inf   Inf
>
> Nice manner of testing...  Consider adding this to the list of 
> linspace compatibility tests in data.cc:
>
> Dan

Actually, on Matlab R2017b

>> linspace(-0, 0, 5)

ans =

     0     0     0     0     0

>> 1./linspace(-0, 0, 5)

ans =

  -Inf  -Inf  -Inf  -Inf  -Inf

and

>> linspace(0, -0, 5)

ans =

     0     0     0     0     0

>> 1./linspace(0, -0, 5)

ans =

   Inf   Inf   Inf   Inf   Inf

--
Michele Ginesi