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| // g++ -O3 -DNDEBUG benchmarkX.cpp -o benchmarkX && time ./benchmarkX
|
| #include <iostream>
|
| #include <Eigen/Core>
|
| using namespace std;
| using namespace Eigen;
|
| #ifndef REPEAT
| #define REPEAT 10000
| #endif
|
| #ifndef SCALAR
| #define SCALAR float
| #endif
|
| int main(int argc, char *argv[])
| {
| typedef Matrix<SCALAR, Eigen::Dynamic, Eigen::Dynamic> Mat;
| Mat m(100, 100);
| m.setRandom();
|
| for(int a = 0; a < REPEAT; a++)
| {
| int r, c, nr, nc;
| r = Eigen::internal::random<int>(0,10);
| c = Eigen::internal::random<int>(0,10);
| nr = Eigen::internal::random<int>(50,80);
| nc = Eigen::internal::random<int>(50,80);
| m.block(r,c,nr,nc) += Mat::Ones(nr,nc);
| m.block(r,c,nr,nc) *= SCALAR(10);
| m.block(r,c,nr,nc) -= Mat::constant(nr,nc,10);
| m.block(r,c,nr,nc) /= SCALAR(10);
| }
| cout << m[0] << endl;
| return 0;
| }
|
|
