Pivot threshold argument is only supported when input matrix is sparse. Pivot threshold argument must be between 0 and 1, inclusive. Pivot threshold argument must be a scalar or a vector of length 2. The array must be 2-dimensional. Invalid data type. First argument must be double or single. Invalid data type. The pivot threshold must be double or single. Pivot threshold must be a scalar when three outputs are specified. Too many input arguments. For dense input matrices, you can specify one or two input arguments. Fourth output only available for sparse input matrices.