LU decomposition with partial (row) pivoting, x = P L U. Equivalent to R's Matrix::lu(). The factors are those
of Matrix::expand(Matrix::lu(x)) (LAPACK's dgetrf). Throws on NaN or infinite values (Matrix::lu returns factors
with NaN or infinite values).
LU decomposition with partial (row) pivoting,
x = P L U. Equivalent to R'sMatrix::lu(). The factors are those ofMatrix::expand(Matrix::lu(x))(LAPACK's dgetrf). Throws onNaNor infinite values (Matrix::lureturns factors with NaN or infinite values).