1. A method of inverting a 4×4 source matrix, the method comprising: dividing the source matrix into four 2×2 sub-matrices A, B, C and D; calculating a plurality of sub-matrix products from the sub-matrices; calculating a determinant of the source matrix dS to form a matrix determinant residue rd of the source matrix as rd&equals;1/dS; forming a partial, inverse sub-matrix of each sub-matrix using one or more of the matrix products and a determinant of each sub-matrix; and calculating an inverse of each sub-matrix iA, iB, iC, and iD, utilizing each partial, inverse sub-matrix and determinant residue rd, such that an inverse of the source matrix iS is formed.