Hi all !
As I see it letting calculations with _ and __ return a zero means you
risk getting random results. I question if this is really an improvement.
If you can not force an exception instead of a loss of precision you
risk getting random results? These exceptions are a compulsory part of
the standard for a reason?
Cheers,
Erling
Den 2017-09-20 kl. 23:22, skrev Henry Rich:
No; see
http://code.jsoftware.com/wiki/Vocabulary/under Details
http://code.jsoftware.com/wiki/Vocabulary/percent#dyadic Details
It would perhaps be better if 0 * _5 gave -0, but it doesn't. The other
deviations are improvements added by J.
Henry Rich
On Wed, Sep 20, 2017 at 10:51 AM, Erling Hellenäs <[email protected]>
wrote:
Hi all !
Here is part of the standard. Required exception handling. Things I
discuss in my post. Is it implemented in J? https://en.wikipedia.org/wiki/
IEEE_754#Exception_handling
The floating point standard is obviously used in environments where the
users can not afford random results, so there must be solutions to the
problems I mention, which we also can see in this wikipedia article.
Cheers,
Erling
Den 2017-09-20 kl. 16:27, skrev Erling Hellenäs:
I hope others want to read my post even if Raul discards it as not worthy
of comments. /Erling
Den 2017-09-20 kl. 12:25, skrev Raul Miller:
This isn't just J - this is the IEEE-754 floating point standard.
It would be really nice if computers could deal with infinities,
instantly, at no cost. Sadly, though, that's not going to happen.
FYI,
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