'Matlab finds two variables having same value not equal [duplicate]

Why does Matlab says one variable is greater than the other although the values are same. During execution, I check two vaiables as follows:

f=0.9000
f_end=0.9000

both of them are 1x1 double variables.

But when I check f>f_end, it returns true. When I check f==f_end, it returns false

Why is that?

If both variables are of the same type and equal, they should be equal logically.

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