Greetings.
On 6 Feb 2018, at 13:00, ben.rudgers wrote:
"The library [math.h] doesn't try to distinguish +0 from -0. IEEE
754
worries quite
a bit about this distinction. All the architectures I mentioned
above can
represent
both flavors of zero. But I have trouble accepting (or even
understanding) the
rationale for this extra complexity. I can sympathize with recent
critiques of the
IEEE 754 Standard that challenge that rationale. Most of all, I
found the
functions
quite hard enough to write without fretting about the sign of
nothing."
If I recall correctly, this is included in the IEEE standard in order to
support various functions which have a cut along the real axis in the
complex plane, and so which have a significantly different values on
that real line, when approached from above and below the line (in the
complex plane).
But this is a rather hand-waving explanation, and I'll defer to those
with more detailed knowledge of the relevant numerical analysis.
Norman
--
Norman Gray : https://nxg.me.uk
--
You received this message because you are subscribed to the Google Groups "Racket
Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to racket-users+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
