source:
pacpussensors/trunk/Vislab/lib3dv/eigen/Eigen-install/doc/snippets/compile_TopicAliasing_mult2.cpp@
136
Last change on this file since 136 was 136, checked in by , 8 years ago | |
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File size: 403 bytes |
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1 | #include <Eigen/Dense> |
2 | #include <iostream> |
3 | |
4 | using namespace Eigen; |
5 | using namespace std; |
6 | |
7 | int main(int, char**) |
8 | { |
9 | cout.precision(3); |
10 | MatrixXf matA(2,2), matB(2,2); |
11 | matA << 2, 0, 0, 2; |
12 | |
13 | // Simple but not quite as efficient |
14 | matB = matA * matA; |
15 | cout << matB << endl << endl; |
16 | |
17 | // More complicated but also more efficient |
18 | matB.noalias() = matA * matA; |
19 | cout << matB; |
20 | |
21 | return 0; |
22 | } |
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