I am running on AIX and I guess you may be on Windows ? I think your byte order must be the other way round than mine. When you get up to 253..256 does the last value go 7,7,7,0

apart from the binary bytes being reversed the rest works as expected for me on 'doze (NT4)

253     11111101000000000000000000000000        7
254     11111110000000000000000000000000        7
255     11111111000000000000000000000000        7
256     00000000000000010000000000000000        0

[download]

If you replace the I* in the pack with N (force byte order we want and the * was never really required) I think you may see something nicer. This version works on box *nix and *dose for me

perl -le'print join "\t", $_, (unpack "B*", pack "N", $_), ($_ & 0xFF)
+ >>5 for (0..256)'

[download]

Cheers,
R.

Pereant, qui ante nos nostra dixerunt!

In reply to Re^4: calculating the 3 MSBs from an integer by Random_Walk
in thread calculating the 3 MSBs from an integer by insaniac

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