Function LU_det (o2scl_linalg)

O2scl : Function List

template<class mat_t>
double o2scl_linalg::LU_det(const size_t N, const mat_t &LU, int signum)

Compute the determinant of a matrix from its LU decomposition.

Compute the determinant of a matrix A from its LU decomposition, LU. The determinant is computed as the product of the diagonal elements of U and the sign of the row permutation signum.