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The the easiest way is to convert the ascii-ised binary back to real numbers:

$bitstream = "\x18\xf0\xff\x0f\x10\xaa\x55\x20\xde\xad\xbe\xef";; ( $f1, $f2, $f3 ) = map unpack( 'L', pack( 'b32', $_ )), unpack 'C/b C +/b C/b', $bitstream;; print for $f1, $f2, $f3;; 1048560 21930 4022250974

This assumes maximum 32-bit values. You could use Q if you are on a 64-bit platform and Perl and need that.

By converting them all to the maximum sized integer the platform can handle you save having to make decisions and they'd end up that way anyway.

You might need to adjust the L (or the 'b32' to 'B32' or 'B64') for the endianness of the originating platform.


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In reply to Re^3: Unpacking variable length bit fields by BrowserUk
in thread Unpacking variable length bit fields by puterboy

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