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[Python-Dev] Floating-point implementations

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On Tue, Dec 9, 2008 at 5:15 PM, Steve Holden <steve at holdenweb.com> wrote:
> precision than the usual 56-bit mantissa. Do modern 64-bit systems
> implement anything wider than the normal double?

I may have misinterpreted your question.  Are you asking simply
about what the hardware provides, or about what the C compiler
and library support?  Or something else entirely?

It looks like IEEE-conforming 128-bit floats would have a 113-bit
mantissa (including the implicit leading '1' bit).

Mark

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