Bit Flip-Bit Negation

32 views (last 30 days)
Sal
Sal on 29 Aug 2011
Hi, There is a way to do a single or multiple bit flip. For bit flip i mean the negation of only that bit in a decimal number. for example: bitflip(8,2) = 10 this should mean a negation on second bit of 8. Thank You

Accepted Answer

Walter Roberson
Walter Roberson on 29 Aug 2011
bitflip = @(val, n) bitxor(val, 2.^(n-1));

More Answers (1)

Paulo Silva
Paulo Silva on 29 Aug 2011
d=8; %decimal value
p=2; %position of the bit to flip
b=dec2bin(d); %convert to binary
%b(p)=num2str(~str2num(b(p))); %flip the bit (wrong place)
b(numel(b)+1-p)=num2str(~str2num(b(numel(b)+1-p))); %flip the bit
dbf=bin2dec(b); %convert to decimal and here you have your result

Categories

Find more on Characters and Strings in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!