[en] The functional relation between the fast slant transformation (FST) and the fast Walsh-Hadamard transformation (FWHT) for dimensions N=2sup(n), n=2.6 is considered in order to develop the algorithms of transition coefficient calculation. The FST is effectively used for digital processing of two-dimensional images. The text and description of the HASLAN program computing the transition matrices in the case of the direct transformation and the inverse one are given. The results of test computations on the TEST program are presented. The computations performed have shown the advantage of application of FWHT for hardware implementation of the direct FST and inadvisability of this method for the inverse FST