eigen/doc/examples/tut_arithmetic_dot_cross.cpp
Gael Guennebaud 75da254fc3 * use transpose() instead of row vectors (more common use case)
* add a word about noalias and performance for BLAS users
2010-06-28 00:42:57 +02:00

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#include <iostream>
#include <Eigen/Dense>
using namespace Eigen;
using namespace std;
int main()
{
Vector3d v(1,2,3);
Vector3d w(0,1,2);
cout << "Dot product: " << v.dot(w) << endl;
double dp = v.adjoint()*w; // automatic conversion of the inner product to a scalar
cout << "Dot product via a matrix product: " << dp << endl;
cout << "Cross product:\n" << v.cross(w) << endl;
}