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More on bitfcns
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From: |
Robert T. Short |
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Subject: |
More on bitfcns |
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Date: |
Sun, 19 Jul 2009 07:39:48 -0700 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.22) Gecko/20090606 SeaMonkey/1.1.17 |
In my search for Truth and Justice I discovered the following bitshift
behavior.
Is the following correct?
% This is what MATLAB does and it seems to make sense to me.
octave:1> bitshift(uint8(0:15),1,3)
ans =
0 2 4 6 0 2 4 6 0 2 4 6 0 2 4 6
% MATLAB doesn't support this, but octave does. Why would shifting
% a positive signed integer give different results than unsigned?
octave:2> bitshift(int8(0:15),1,3)
ans =
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
I will be out of town for a week.
Bob
--
Robert T. Short, Ph.D.
PhaseLocked Systems