mirror of
https://gitlab.com/libeigen/eigen.git
synced 2025-04-21 00:59:36 +08:00
3cd2a125b2
- make vectors use a separate loop unroller, so that copying a row-vector into a col-vector is now possible - add much more documentation - misc improvements
24 lines
704 B
C++
24 lines
704 B
C++
#include <Eigen/Core.h>
|
|
USING_PART_OF_NAMESPACE_EIGEN
|
|
using namespace std;
|
|
|
|
template<typename Scalar, typename Derived>
|
|
Eigen::Cast<double, Derived>
|
|
castToDouble(const MatrixBase<Scalar, Derived>& m)
|
|
{
|
|
return Eigen::Cast<double, Derived>(m.ref());
|
|
// note: tempting as it is, writing "m.cast<double>()" here
|
|
// causes a compile error with g++ 4.2, apparently due to
|
|
// g++ getting confused by the many template types and
|
|
// template arguments involved.
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
Matrix2i m = Matrix2i::random();
|
|
cout << "Here's the matrix m. It has coefficients of type int."
|
|
<< endl << m << endl;
|
|
cout << "Here's 0.05*m:" << endl << 0.05 * castToDouble(m) << endl;
|
|
return 0;
|
|
}
|