array addition

Hello,

I am trying to perform simple array addition inside of my code but I am getting wrong answers because of the negative sign which is suppose to cancel out during the addition still remains in the final answer. can anyone please help.

a =

      1.0879
      0.0000
     -0.0000
      0.0000
      0.0000
      0.0000
     -0.0000
      0.1072

b =

     -0.0879
     -0.0000
      0.0000
     -0.0000
      0.0000
     -0.0000
      0.0000
      0.8928

c = a+b

ans 1.0000 -0.0000 0.0000 -0.0000 0.0000 -0.0000 0.0000 1.0000

Answer 1

[Andrei Bobrov]

c(abs(c)<100*eps)=0

[God'sSon]

thank you very much for your answer. can you kindly explain how it works?

[Arnaud Miege]

http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F

[Andrei Bobrov]

Please read the <http://matlab.wikia.com/wiki/FAQ> part

"Why is 0.3 - 0.2 - 0.1 (or similar) not equal to zero?"

[God'sSon]

thanks