"OR" not working

Hi,

I am seeing a strange result in matlab using the OR operator.

This is what I am seeing:

K>> 5==1|2

ans =
     1

I must be doing something wrong, but can't figure out what. Any ideas?

[José-Luis]

What did you expect to get?

Answer 1

[Azzi Abdelmalek]

This is correct

5==1

The result is 0

0|2

the result is 1

[Azzi Abdelmalek]

Maybe you want

   (5==1)|(5==2)

which gives 0

[Adam]

You are correct, I needed the 5==1|5==2 format. Thank you for your response.

Just out of curiosity, what is the other format doing, i.e. why does 5==1|2 result in true?

[Azzi Abdelmalek]

5==1|2

is the same then

(5==1)|2

Matlab consider each number different from zero as true

5==1  % is false
2 % is true

false | true %will give true

[James Tursa]

5==1 is done first and results in a logical value 0 (i.e., false)

Then 0|2 is done next. It is a logical OR and also returns a logical result. If either of the inputs is non-zero, then the result will be 1 (i.e., true), so that is what you get for your example.