internal spectra_spmat GetMatrix(CompressedColumnStorage <T> matrix, List <GCHandle> handles)
{
spectra_spmat a = default(spectra_spmat);
a.n = size;
a.p = InteropHelper.Pin(matrix.ColumnPointers, handles);
a.i = InteropHelper.Pin(matrix.RowIndices, handles);
a.x = InteropHelper.Pin(matrix.Values, handles);
a.nnz = matrix.NonZerosCount;
return(a);
}
public static extern int spectra_di_sg_shift(int which, char mode, int k, int ncv, int maxit, double tol, double sigma,
ref spectra_spmat A, ref spectra_spmat B, ref spectra_result eigs);
public static extern int spectra_di_sg(int which, int k, int ncv, int maxit, double tol,
ref spectra_spmat A, ref spectra_spmat B, ref spectra_result eigs);
