MATLAB: How to create bit vector depending on another bit vector

hi, I have 20 bits in a vector (binary bits): for example, start from:
TMP_reg = [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0];
TMP_reg = [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1];
TMP_reg = [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1];
..
..
end at:
TMP_reg = [1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1];
I want to produce another bits vector that depends on TMP_reg.
The new vector will be 40 bits vector on condition like that:
  1. For every bit that equal to 1 in TMP_reg, the New_reg will be 1 0 (as long as TMP_reg bit is 1).
  2. For every bit that equal to 0 in TMP_reg the New_reg will be 0 1 (as long as TMP_reg bit is 0).
Any suggestion how to do it?
Thanks,
Henry

Best Answer

One possible way:
bitpatterns = {[0 1], [1 0]}; %in the order pattern for 0, pattern for 1
TMP_reg = [0 0 1 0 1 1 0]; %length does not matter
TMP_2 = cell2mat(bitpatterns(TMP_reg + 1)) %add 1 to TMP_reg to create indices 1 or 2 used to index bitpatterns
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