Mailing lists / fpc-devel / 2018-06
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Hi Florian,
I do nut really understand why you return a mantissa with the highest bit stripped off for type Extended.
From what I have gathered about 80-bit extended type the mantissa of
this type _is_ the full 64 bits, see
http://rvelthuis.de/articles/articles-floats.html
Does Delphi strip that bit off as well in TExtended80Rec.Mantissa?
Bart
Afaik the mantissa function is defined like this for the records, yes. They do not include the hidden bit.
Florian Klämpfl wroteAfaik the mantissa function is defined like this for the records, yes. They do not include the hidden bit.
Hmm, then Rudy Velthuis is wrong (or Delphi).
I saw that my patch for the floathelpers caused a regression, see https://bugs.freepascal.org/view.php?id=33932.
I attached a possible patch there, but I did not build a 64-bit compiler with FPC_SOFT_FPUX80 defined to see it would even compile.
Bart