Converting a decimal matrix to binary in GA

Question

Mohammed Islam Bourenane 2024-1-3

0
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https://ww2.mathworks.cn/matlabcentral/answers/2066061-converting-a-decimal-matrix-to-binary-in-ga

评论： Mohammed Islam Bourenane 2024-1-5

Hi,

I have a big problem in a multivariable function for Genetic Algorithms, I can't convert my decimal matrix to binary correctly it contains a signed and fractional numbers between -3 ,3.I need to finish the secript in 2 days Help please.

xx=-3+6*rand(10,1);

Thank You.

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Answer 1

Walter Roberson 2024-1-3

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https://ww2.mathworks.cn/matlabcentral/answers/2066061-converting-a-decimal-matrix-to-binary-in-ga#answer_1382641

编辑：Walter Roberson 2024-1-3

在 MATLAB Online 中打开

typecast() the decimal matrix to 'uint64', and then use bitget() to fetch the individual bits.

Example,

format long g
Num = -sqrt(5)
Num = 
         -2.23606797749979
as64 = typecast(Num, 'uint64')
as64 = uint64
   13835589633109914792
%checks to be sure that we are working with the same number
num2hex(Num)
ans = 'c001e3779b97f4a8'
dec2hex(as64)
ans = 'C001E3779B97F4A8'
%checks passed.
%get the bits
bits = bitget(as64, 64:-1:1)
bits = 1×64
   1   1   0   0   0   0   0   0   0   0   0   0   0   0   0   1   1   1   1   0   0   0   1   1   0   1   1   1   0   1