Re: sizeof(long double) vs. std::numeric_limits and x86-64 vs x86

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On 09/27/2011 01:46 AM, Ian Lance Taylor wrote:
Alas, no. On x86_64 long double is an 80-bit floating point number,
just as on 32-bit x86.  The size is 16 bytes because the x86_64 prefers
to align large values to 8-byte boundaries.

gcc works this way because the 80-bit floating point format is supported
directly in hardware, unlike the 128-bit format.



I suspected that this is the case, but hoped for the better.

Thanks

--

  Michael




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