DP = dot_product(A,B)
The meaning is
For two matrices C and D (at least one has dimension 2) their matrix-matrix product is given by
E = matmul(C,D)
The result is a matrix. The shapes of C, D, E have to obey the usual mathematical relation for matrix multiplication. Note that the matrix product MATMUL(C,D) is not equal to the element-by-element product C*D.