Re^3: Unpacking variable length bit fields

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
[download]

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.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

Comment on Re^3: Unpacking variable length bit fields Download Code