@woosh/meep-engine/src/core/math/linalg/lu_solve_linear_system.d.ts

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/**
 * Assumes the system is factorized already. Use {@link lu_factor_linear_system} before if it isn't
 * Solve linear equations Ax = b using LU decomposition A = LU where L is lower triangular matrix and U is upper triangular matrix.
 * Input is factored matrix A=LU, integer array of pivot indices index[0->n-1], load vector x[0->n-1], and size of square matrix n.
 * Note that A=LU and index[] are generated from method LUFactorLinearSystem.
 * Also, solution vector is written directly over input load vector.
 *
 * @param {number[]} A Square matrix (flattened)
 * @param {number[]|Uint32Array} index
 * @param {number[]} x Load vector
 * @param {number} size matrix size ( 4x4 matrix has size 4)
 */
export function lu_solve_linear_system(A: number[], index: number[] | Uint32Array, x: number[], size: number): void;
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