two value difference is not complete 0. how can make it complete 0?

Hi, I am using eq function to see the difference but when i get these two values it's not giving right answer. fo example : when I get a=0.164, b=0.164 then output of eq function should be 1 but it produce 0. can anyone please help in this problem ? Thanks

function y = op(a,b)

x= eq(a,b);

 if (x ~=0)
     out=0;
 else
     out=1;

 end

y = out;

Answer 1

[KSSV]

You cannot compare floating numbers using ==. You need to set a tolerance and check for the difference and come to decision.

   a=0.164 ;
   b=0.164 ;
   tol = 10^-5 ;

   if abs(a-b)<= tol
       disp('They are equal')
   end

[Sarfaraz Ahmed]

Thanks KSSV. it works !