Unfortunately that will exceed the 15 digit precision of a 64bit double. In fact, your answer doesn't match the result from the 64bit machine shown above, or this: 
    > perl -Mbigint -le 'print 0x123456789ABCDEF'
    81985529216486895

[download]

--
John.

In reply to Re^2: converting big hex to dec by jmcnamara
in thread converting big hex to dec by Anonymous Monk

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