Re^5: unintentional conversion of signaling NaN to quiet NaN

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C:\_32>perl -V:archname
archname='MSWin32-x86-multi-thread-64int';
...
C:\_32>perl -le "$d = unpack 'd', pack 'Q', 0x7ff0000000000001;print $
+d; printf '%f', $d;"
NaN
NaN

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NaN
7ff8000000000001

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NaN
7ff0000000000001

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NaN
7ff8000000000001

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