mustBePowerOf2

Can be used as argements validator. Checks if all numbers of an array are powers of 2.

Extends the argument validation functions:

https://www.mathworks.com/help/matlab/matlab_prog/argument-validation-functions.html

mustBePowerOf2(numbers) validates if all the numbers of an array are a power of 2, i.e., check if for every number n in the array log2(n) = k, where k is a non-negative integer. The function throws an error if any number of the array is not a power of 2.

Note: If you want to also check for powers of 2 when k is a negative integer, i.e., fractions where the denominator is a power of 2, you can simply remove the "numbers(iter) < 1 " from the if clause.