cessity
of specifying the first, since it follows the last coefficient of the
previous. This is the role of the array <TT>ico(i)</TT> which indicates
the last position of the i'th non-zero matrix elements.  Since only
non-zero matrix elements are stored, another integer is needed to
specify the value of the row index:  <TT>jan(i)</TT> (<TT>ih(i)</TT> in
<TT>mchf</TT>) is the array containing this
information.  Because  the list of coefficients and associated integrals
may become extremely large, the data is