lt;0) || <span class="keyword">...</span>
0092         ~isfield(pen,<span class="string">'ai_idx'</span>) || <span class="keyword">...</span>
0093         ~isfield(pen,<span class="string">'ai_nzs'</span>) || any(pen.ai_nzs&lt;0) || <span class="keyword">...</span>
0094         ~isfield(pen,<span class="string">'ai_val'</span>) || ~isfield(pen,<span class="string">'ai_col'</span>) || <span class="keyword">...</span>
0095         ~isfield(pen,<span class="string">'ai_row'</span>))
0096         error(<span cl