Can you help me in compare whit matlab ?

hello,

I' need a function to compare files & Give a ratio of compare difference

Example : - a=5 , b=5.5 then a~=b but compare difference is approx... 60% .

please help .....

[Orion]

It's not clear, do you want to compare files or variables ?

And in your example, the difference between a and b is 10 % which you can consider as a relative error calculated by

d = abs((a-b)/a);