{ "__type": "IngestedDoc", "__tag": 4010, "_content": { "Notes": { "__type": "Section", "__tag": 4015, "children": [ { "__type": "Paragraph", "__tag": 4045, "children": [ { "__type": "Text", "__tag": 4046, "value": "This is a wrapper to the " }, { "__type": "InlineCode", "__tag": 4051, "value": "*GETRF" }, { "__type": "Text", "__tag": 4046, "value": " routines from LAPACK. 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The unit diagonal elements of L are not stored." } ] } ] }, { "__type": "DocParam", "__tag": 4016, "name": "piv", "annotation": "(K,) ndarray", "desc": [ { "__type": "Paragraph", "__tag": 4045, "children": [ { "__type": "Text", "__tag": 4046, "value": "Pivot indices representing the permutation matrix P: row i of matrix was interchanged with row piv[i]. 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Disabling may give a performance gain, but may result in problems (crashes, non-termination) if the inputs do contain infinities or NaNs." } ] } ] } ] } ], "title": [], "level": 0, "target": null }, "Extended Summary": { "__type": "Section", "__tag": 4015, "children": [ { "__type": "Paragraph", "__tag": 4045, "children": [ { "__type": "Text", "__tag": 4046, "value": "The decomposition is " } ] }, { "__type": "Code", "__tag": 4050, "value": "A = P L U", "execution_status": null, "out": "" }, { "__type": "Paragraph", "__tag": 4045, "children": [ { "__type": "Text", "__tag": 4046, "value": "where P is a permutation matrix, L lower triangular with unit diagonal elements, and U upper triangular." } ] }, { "__type": "Paragraph", "__tag": 4045, "children": [ { "__type": "Text", "__tag": 4046, "value": "The documentation is written assuming array arguments are of specified \"core\" shapes. 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