How do I do unsigned comparsion between two vectors having 1s and 0s?

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Nadatimuj
Nadatimuj 2022-3-29
评论： Chunru 2022-3-29
x = '10000001000000000000000000000000'
y = '00000000000001010110001111000000'
Let's say x is the binary representation of a 32-bit unsigned number. y is also same.
I want to have unsigned comparison between both of them. That means x(1) and y(1) are the MSB and the comparsion should start from there till we reach LSB.
Thanks.

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Chunru
Chunru 2022-3-29
Ran in:
x = '10000001000000000000000000000000'
x = '10000001000000000000000000000000'
y = '00000000000001010110001111000000'
y = '00000000000001010110001111000000'
% Convert the binary to decimal
xd = bin2dec(x)
xd = 2.1643e+09
yd = bin2dec(y)
yd = 353216
% compare the decimal number
xd > yd
ans = logical
1
  2 个评论
Chunru
Chunru 2022-3-29
Ran in:
It works forup to 53 binary bits (?).
If you have more bits to compare, you can use symbolic computation:
x = '0b100000010000000000000000000000001000000000000000000000000011';
y = '0b000000000000010101100011110000001000000000000000000000000011';
xs = sym(x)
xs = 
580964352065011715
ys = sym(y)
ys = 
94815832244227
isAlways(xs > ys)
ans = logical
1

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