37 lines
853 B
C++
37 lines
853 B
C++
// 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;
|
|
}
|