calcNormS               Calculate normalised S matrix
calcNormS.R             Calculate the normalised S matrix in R, for
                        internal use
hogsvd                  Compute the Higher-order generalised singular
                        value decomposition (HOGSVD) of a list of
                        matrices
hogsvd.rArmadillo       Compute the Higher-order generalised singular
                        value decomposition (HOGSVD) of a list of
                        matrices with RcppArmadillo
hogsvd.rsimple          Compute the Higher-order generalised singular
                        value decomposition (HOGSVD) of a list of
                        matrices without Armadillo
