x86-64 long double precision

Posted by aaa on Stack Overflow See other posts from Stack Overflow or by aaa
Published on 2010-05-10T00:11:34Z Indexed on 2010/05/10 0:18 UTC
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hello.

What is the actual precision of long double on Intel 64-bit platforms? is it 80 bits padded to 128 or actual 128 bit?

if former, besides going gmp, is there another option to achieve true 128 precision?

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