Re: negative zero

[Andre_M_Van_Meulebrouck@countrywide.com]

What is the purpose in returning negative zero in the first place?




Shriram Krishnamurthi <shriram@cs.rice.edu> on 06/20/2000 03:03:17 PM

Please respond to shriram@cs.rice.edu

To:   Andre_M_Van_Meulebrouck@countrywide.com
cc:   plt-scheme@fast.cs.utah.edu, vanmeule@acm.org

Subject:  negative zero


Hi Andre:

> (exact? -0) => #t [not only does negative zero exist, it's exact!?]

Consider:

> (eq? -0 0)
#t
> (negative? -0)
#f
> (positive? -0)
#f
> (negative? 0)
#f
> (positive? 0)
#f

'shriram