BSeasy_A - Given A in a standard numerical format, construct the sparse A that
we need for BlockSolve. This routine is particularly useful for matrices
created in Fortran. The rows on a processor must be contiguous in the global
numbering. If they are not, then other BlockSolve routines must be called to
construct the matrix for BlockSolve. Arrays are indexed starting with 0. The
values in a row must be sorted according to column number.
start_num - the global number of the first row on this proc. n - the number of
rows on *this* processor. rp - an array of indices of length n+1 -- rp(i)
gives the beginning entry of row i in cval and aval. cval - an array of column
numbers. cval[i] gives the column number of entry i in aval. aval - an array
of the nonzero values in the sparse matrix. procinfo - the usual processor
a pointer to a sparse matrix in BlockSolve format.
BSspmat *BSeasy_A(int start_num, int n, int *rp, int *cval,
FLOAT *aval, BSprocinfo *procinfo)