[Numpy-discussion] float96 on windows32 is float64?

Matthew Brett matthew.brett@gmail....
Fri Mar 16 00:22:48 CDT 2012


Hi,

On Thu, Mar 15, 2012 at 10:17 PM, Ilan Schnell <ischnell@enthought.com> wrote:
> I'm seeing the same thing on both (64 and 32-bit) Windows
> EPD test machines.  I guess Windows does not support 128
> bit floats.

Do you mean there is no float96 on windows 32 bit as I described at
the beginning of the thread?

> I did some tests a few weeks ago, and discovered that also
> on the Mac and Linux long long double is not really 128 bits.
> If I remember correctly it was 80 bits: 1 (sign) + 16 (exp) + 63 (mantissa)

Yes, that's right, on Intel for linux and OSX longdouble is 80 bit precision.

Thanks,

Matthew


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