[Scilab-users] What can be done with a signed zero -0 ?

[Samuel Gougeon]

Dear co-users,

I am somewhat rediscovering that Scilab allows to defined a signed zero:

--> zm = -0
  zm  =
    0.

--> 1/zm
  ans  =
   -Inf

It looks not documented. I am wondering where is the best place to 
document it (i mean, which existing page?), and even if it is worthwhile 
to document it.

Indeed, what can be done with it? Beside inverting it into -%inf, other 
operations are rather disappointing:

--> zm==0
  ans  =
   T

--> zm<0
  ans  =
   F

--> sign(zm)
  ans  =
    0.

Any idea about applications?

Cheers
Samuel