Matrix must have real diagonal. The array must be 2-dimensional. Invalid data type. First argument must be double or single. Too many output arguments. Specify at most three output arguments if input matrix is dense. Not enough output arguments. Specify at least three output arguments if input matrix is sparse. Complex sparse input matrix not supported. The pivot tolerance must be a real double scalar between 0 and 0.5, inclusive. Pivot tolerance only supported for sparse matrices.