BITOR BITOR Bitwise Boolean Or Operation Usage Performs a bitwise binary or operation on the two arguments and returns the result. The syntax for its use is y = bitor(a,b) where a and b are unsigned integer arrays. The or operation is performed using 32 bit unsigned intermediates. Note that if a or b is a scalar, then each element of the other array is ored with that scalar. Otherwise the two arrays must match in size.