Press n or j to go to the next uncovered block, b, p or k for the previous block.
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* @license Apache-2.0
*
* Copyright (c) 2026 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
/**
* LAPACK routine to compute the LU factorization with complete pivoting of the general n-by-n matrix `A`.
*
* ## Notes
*
* - `A` should have dimension (LDA, N) and is overwritten with the factors L and U from the factorization A = `P*L*U*Q`; the unit diagonal elements of L are not stored.
* - If U(k, k) appears to be less than `SMIN`, U(k, k) is given the value of `SMIN`, i.e., giving a nonsingular perturbed system.
* - `IPIV` should have `N` elements and is overwritten with the pivot indices; for 1 <= i <= N, row i of the matrix has been interchanged with row IPIV(i).
* - `JPIV` should have `N` elements and is overwritten with the pivot indices; for 1 <= i <= N, column i of the matrix has been interchanged with column JPIV(i).
* - Returns 0 on successful exit and if returns `k`, U(k, k) is likely to produce overflow if we try to solve for x in Ax = b. So U is perturbed to avoid the overflow.
*
* @module @stdlib/lapack/base/dgetc2
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
* var Int32Array = require( '@stdlib/array/int32' );
* var dgetc2 = require( '@stdlib/lapack/base/dgetc2' );
*
* var A = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 10.0 ] );
* var IPIV = new Int32Array( 3 );
* var JPIV = new Int32Array( 3 );
*
* dgetc2( 'column-major', 3, A, 3, IPIV, JPIV );
* // A => <Float64Array>[ 10, 0.7, 0.8, 3, ~-1.1, ~0.36, 6, ~-0.2, ~0.27 ]
* // JPIV = <Int32Array>[ 3, 3, 3 ]
* // IPIV = <Int32Array>[ 3, 3, 3 ]
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
* var Int32Array = require( '@stdlib/array/int32' );
* var dgetc2 = require( '@stdlib/lapack/base/dgetc2' );
*
* var A = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 10.0 ] );
* var IPIV = new Int32Array( 3 );
* var JPIV = new Int32Array( 3 );
*
* dgetc2.ndarray( 3, A, 1, 3, 0, IPIV, 1, 0, JPIV, 1, 0 );
* // A => <Float64Array>[ 10, 0.7, 0.8, 3, ~-1.1, ~0.36, 6, ~-0.2, ~0.27 ]
* // JPIV = <Int32Array>[ 3, 3, 3 ]
* // IPIV = <Int32Array>[ 3, 3, 3 ]
*/
// MODULES //
var join = require( 'path' ).join;
var tryRequire = require( '@stdlib/utils/try-require' );
var isError = require( '@stdlib/assert/is-error' );
var main = require( './main.js' );
// MAIN //
var dgetc2;
var tmp = tryRequire( join( __dirname, './native.js' ) );
if ( isError( tmp ) ) {
dgetc2 = main;
} else {
dgetc2 = tmp;
}
// EXPORTS //
module.exports = dgetc2;
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