5template <
typename Scalar>
9 Scalar tol = std::sqrt(NumTraits<Scalar>::epsilon()) )
12 typedef DenseIndex
Index;
15 Index i, j, k, l, ii, jj;
20 const Index n = r.cols();
21 const Scalar tolr = tol *
abs(r(0,0));
23 eigen_assert(ipvt.size()==n);
27 for (k = 0; k < n; ++k)
28 if (
abs(r(k,k)) > tolr) {
30 for (j = 0; j <= k-1; ++j) {
31 temp = r(k,k) * r(j,k);
33 r.col(k).head(j+1) -= r.col(j).head(j+1) * temp;
40 for (k = 0; k <= l; ++k) {
41 for (j = 0; j <= k-1; ++j)
42 r.col(j).head(j+1) += r.col(k).head(j+1) * r(j,k);
43 r.col(k).head(k+1) *= r(k,k);
48 for (j = 0; j < n; ++j) {
51 for (i = 0; i <= j; ++i) {
64 r.topLeftCorner(n,n).template triangularView<StrictlyUpper>() = r.topLeftCorner(n,n).transpose();
Namespace containing all symbols from the Eigen library.
const Eigen::CwiseUnaryOp< Eigen::internal::scalar_abs_op< typename Derived::Scalar >, const Derived > abs(const Eigen::ArrayBase< Derived > &x)
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index