How to get more precision in comparing Elements of Matrix

I have a double matrix and i want to pick up the largest element in each column . I found out that Matlab compares only ith 4 numbers after the point , that's what actually matlab shows in the variables window. By changing the Format in the comand windows i get this :

format long

ans =

   0.001016470327852

ans =

   0.001024700640374

But Matlab is only comparing 0.0010 and considering them equal ...

Thank you in advance

[Adam]

Matlab uses the complete number for maths. How it is formatted for visualisation is irrelevant. If you need the difference to a high number of decimal places then that is different, but up to double precision the maths is precise for comparing equality or greater than operations.

>> a = 0.001016470327852

a =

         0.001016470327852

>> b = 0.001024700640374

b =

         0.001024700640374

>> a == b

ans =

logical

   0

>> b > a

ans =

logical

   1