| // SPDX-FileCopyrightText: The Eigen Authors | |
| // SPDX-License-Identifier: MPL-2.0 | |
| #include <iostream> | |
| #include <Eigen/Core> | |
| template <typename Derived> | |
| void print_size(const Eigen::EigenBase<Derived>& b) { | |
| std::cout << "size (rows, cols): " << b.size() << " (" << b.rows() << ", " << b.cols() << ")" << std::endl; | |
| } | |
| int main() { | |
| Eigen::Vector3f v; | |
| print_size(v); | |
| // v.asDiagonal() returns a 3x3 diagonal matrix pseudo-expression | |
| print_size(v.asDiagonal()); | |
| } |