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Re: Extracting bit fields from an IEEE-784 float

From Grant Edwards <invalid@invalid.invalid>
Newsgroups comp.lang.python
Subject Re: Extracting bit fields from an IEEE-784 float
Date 2012-07-30 14:16 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <jv64v5$g2n$2@reader1.panix.com> (permalink)
References <5015d8d4$0$11120$c3e8da3@news.astraweb.com>

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On 2012-07-30, Steven D'Aprano <steve+comp.lang.python@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.

-- 
Grant Edwards               grant.b.edwards        Yow! I was born in a
                                  at               Hostess Cupcake factory
                              gmail.com            before the sexual
                                                   revolution!

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Thread

Extracting bit fields from an IEEE-784 float Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-30 00:44 +0000
  PyPI question, or, maybe I'm just stupid Chris Gonnerman <chris@gonnerman.org> - 2012-07-29 20:26 -0500
    Re: PyPI question, or, maybe I'm just stupid Ben Finney <ben+python@benfinney.id.au> - 2012-07-30 14:00 +1000
      Re: [Python] Re: PyPI question, or, maybe I'm just stupid Chris Gonnerman <chris@gonnerman.org> - 2012-07-30 07:46 -0500
  Re: Extracting bit fields from an IEEE-784 float Dan Sommers <dan@tombstonezero.net> - 2012-07-29 18:08 -0700
  Re: Extracting bit fields from an IEEE-784 float Terry Reedy <tjreedy@udel.edu> - 2012-07-30 01:17 -0400
  Re: Extracting bit fields from an IEEE-784 float Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-07-30 08:42 +0200
  Re: Extracting bit fields from an IEEE-784 float Mark Dickinson <dickinsm@gmail.com> - 2012-07-30 00:57 -0700
  Re: PyPI question, or, maybe I'm just stupid Dieter Maurer <dieter@handshake.de> - 2012-07-30 11:20 +0200
  Re: Extracting bit fields from an IEEE-784 float Grant Edwards <invalid@invalid.invalid> - 2012-07-30 14:16 +0000
    Re: Extracting bit fields from an IEEE-784 float Roy Smith <roy@panix.com> - 2012-07-30 10:28 -0400
    Re: Extracting bit fields from an IEEE-784 float Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-07-30 15:50 +0100
      Re: Extracting bit fields from an IEEE-784 float Grant Edwards <invalid@invalid.invalid> - 2012-07-30 15:47 +0000
        Re: Extracting bit fields from an IEEE-784 float Roy Smith <roy@panix.com> - 2012-07-30 16:50 -0400
    Re: Extracting bit fields from an IEEE-784 float Mark Dickinson <dickinsm@gmail.com> - 2012-07-30 09:14 -0700

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