#include#include int main() { // Create a VectorXd of size 4 Eigen::VectorXd v(4); // Set the elements of the vector v << 1, 2, 3, 4; // Output the vector to the console std::cout << "v = " << v << std::endl; // Compute the sum of the elements double sum = v.sum(); // Output the sum to the console std::cout << "sum = " << sum << std::endl; return 0; }
#includeThis code creates a VectorXd of size 5, sets its elements to 1, 2, 3, 4, and 5, and then computes the dot product of the vector with itself. Eigen is a standalone library, so it doesn't depend on any other package or library.#include int main() { // Create a VectorXd of size 5 Eigen::VectorXd v(5); // Set the elements of the vector v << 1, 2, 3, 4, 5; // Compute the dot product of the vector with itself double dotprod = v.dot(v); // Output the dot product to the console std::cout << "dot prod = " << dotprod << std::endl; return 0; }