MATLAB: How to compare a number with values of a vector

arraysvectors

I have a vector. For example
A = [20 40 60 80 100 120]
I have a number as an input in a function
function imp(omega)
I need to compare the number omega with all the numbers of the vector. For example, the number is 30. I know 30 is in between 20 and 40. How do I find that by code?

Best Answer

A = [20 40 60 80 100 120];
x=30;
lowB=interp1(A,A,x,'previous')
HighB=interp1(A,A,x,'next')