| Austin Schuh | c55b017 | 2022-02-20 17:52:35 -0800 | [diff] [blame^] | 1 | struct pad { |
| 2 | Index size() const { return out_size; } | ||||
| 3 | Index operator[] (Index i) const { return std::max<Index>(0,i-(out_size-in_size)); } | ||||
| 4 | Index in_size, out_size; | ||||
| 5 | }; | ||||
| 6 | |||||
| 7 | Matrix3i A; | ||||
| 8 | A.reshaped() = VectorXi::LinSpaced(9,1,9); | ||||
| 9 | cout << "Initial matrix A:\n" << A << "\n\n"; | ||||
| 10 | MatrixXi B(5,5); | ||||
| 11 | B = A(pad{3,5}, pad{3,5}); | ||||
| 12 | cout << "A(pad{3,N}, pad{3,N}):\n" << B << "\n\n"; | ||||