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get rid of using namespace Eigen in sample code

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This commit is contained in:
Erik Schultheis
2021-12-07 19:57:38 +00:00
committed by Rasmus Munk Larsen
parent e4c40b092a
commit 39a6aff16c
58 changed files with 274 additions and 399 deletions
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16
doc/examples/function_taking_ref.cpp
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@@ -1,19 +1,17 @@
#include <iostream>
#include <Eigen/SVD>
using namespace Eigen;
using namespace std;
float inv_cond(const Ref<const MatrixXf>& a)
float inv_cond(const Eigen::Ref<const Eigen::MatrixXf>& a)
{
const VectorXf sing_vals = a.jacobiSvd().singularValues();
const Eigen::VectorXf sing_vals = a.jacobiSvd().singularValues();
return sing_vals(sing_vals.size()-1) / sing_vals(0);
}
int main()
{
Matrix4f m = Matrix4f::Random();
cout << "matrix m:" << endl << m << endl << endl;
cout << "inv_cond(m): " << inv_cond(m) << endl;
cout << "inv_cond(m(1:3,1:3)): " << inv_cond(m.topLeftCorner(3,3)) << endl;
cout << "inv_cond(m+I): " << inv_cond(m+Matrix4f::Identity()) << endl;
Eigen::MatrixXf m = Eigen::MatrixXf::Random(4, 4);
std::cout << "matrix m:\n" << m << "\n\n";
std::cout << "inv_cond(m): " << inv_cond(m) << "\n";
std::cout << "inv_cond(m(1:3,1:3)): " << inv_cond(m.topLeftCorner(3,3)) << "\n";
std::cout << "inv_cond(m+I): " << inv_cond(m+Eigen::MatrixXf::Identity(4, 4)) << "\n";
}