[Numpy-discussion] Solaris Sparc build broken
David Cournapeau
david at ar.media.kyoto-u.ac.jp
Thu Nov 5 01:39:19 EST 2009
Charles R Harris wrote:
>
>
> On Wed, Nov 4, 2009 at 11:30 PM, David Cournapeau
> <david at ar.media.kyoto-u.ac.jp <mailto:david at ar.media.kyoto-u.ac.jp>>
> wrote:
>
> Charles R Harris wrote:
>
> >
> > I don't think it's that bad. Leaving out the ppc and sticking to
> ieee,
> > there is only double precision, extended precision and quad
> precision
> > versions of long double and they are easily determined at run time.
>
> How would you determine this at runtime ?
>
>
> Excepting the PPC, just loop adding a number to one, dividing it by
> two at each iteration, and stop when the result is equal to one.
But that's not what I need. I need to know exactly the binary
representation: how many bits in the mantissa/exponent and where, the
exponent, where does subnormals start, the range of NAN representations,
etc...
David
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