Extracting bit fields from an IEEE-784 float

Grant Edwards invalid at invalid.invalid
Mon Jul 30 17:47:51 CEST 2012

On 2012-07-30, Mark Lawrence <breamoreboy at yahoo.co.uk> wrote:
> On 30/07/2012 15:16, Grant Edwards wrote:
>> On 2012-07-30, Steven D'Aprano <steve+comp.lang.python at pearwood.info> wrote:
>>> 1) Are there any known implementations or platforms where Python floats
>>> are not C doubles? If so, what are they?
>> And the question you didn't ask: are there any platforms where a C
>> double isn't IEEE-754?
>> The last ones I worked on that where the FP format wasn't IEEE were
>> the DEC VAX and TI's line if 32-bit floating-point DSPs.  I don't
>> think Python runs on the latter, but it might on the former.
> Support for Python on VMS has been dropped for v3.3 see 
> http://bugs.python.org/issue11918

I imagine that VAXes running Unix went extinct in the wild long before
VAXes running VMS.

Grant Edwards               grant.b.edwards        Yow! Did YOU find a
                                  at               DIGITAL WATCH in YOUR box
                              gmail.com            of VELVEETA?

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