Generalized Array Operations

Computes generalized array operations by expanding singleton dimensions.

Computes functions of arrays where the singleton dimensions of each have been expanded to be the size of the other, without actually copying any data.

For example,

x = rand(4,3,1,2);
y = rand(4,1,5,2);
z = genop(@times,x,y);

size(z) will be [4 3 5 2].