blob: c5b89c545572c77e285e30231fed1c5f4330b693 [file] [log] [blame]
// 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;
}