Greg Stark wrote:
> Also, the question arises what should be returned for hypot(Inf,NaN)
> which your code returns Inf for. Empirically, it seems the normal
> floating point behaviour is to return NaN so I think the NaN test
> should be first.
>
>
See http://www.opengroup.org/onlinepubs/000095399/functions/hypot.html
If /x/ or /y/ is ±Inf, +Inf shall be returned (even if one of /x/ or
/y/ is NaN).
If /x/ or /y/ is NaN, and the other is not ±Inf, a NaN shall be
returned.
Just trying to implement correct C99 behaviour here.
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