Re: Why do some math functions return -0

[Tony Finch <dot@...>]

On Mon, 20 Sep 2010, David Kastrup wrote:
>
> I have yet to see any rationale for returning -0 for positive operands.

William Kahan mentions that it makes interval arithmetic work better.

http://www.cs.berkeley.edu/~wkahan/ieee754status/IEEE754.PDF

Tony.
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