MTIMESX - Fast Matrix Multiply with Multi-Dimensional Support by James Tursa

Beats MATLAB 300% - 400% in some cases ... really! (as the code is pretty..., 4, is there a simple way...)

mtimesx(varargin)

mtimesx_build(x)

mtimesx_sparse(a,transa,b,transb)

Multiple matrix multiplications, with array expansion enabled by Paolo de Leva

Multiplying matrices, vectors, or scalars contained in two N-D arrays, with array expansion enabled. (arraylab, singleton expansion, vector)

arraylab13(a,b,d1,d2)

arraylab131(a,b,d1,d2)

arraylab132(a,b,d1,d2)