From: John Maddock (john_at_[hidden])
Date: 2006-07-25 08:31:02
Johan Råde wrote:
> So it would make sense to have the functions
>
> is_finite()
> is_normal()
> is_subnormal()
>
> is_infinity()
> is_plus_infinity()
> is_minus_infinity()
>
> is_nan()
Do we really want to use gratuitously different names from those in C99:
isfinite
isnorm
isinf
isnan
?
> and possibly
>
> is_quite_nan()
> is_signalling_nan()
>
> The last two are tricky to implement though.
Actually probably impossible without decoding the bits in the FP number -
for which you would have to deal with multiple formats in multiple
endianness's etc.
John.