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34 lines
625 B
C++
34 lines
625 B
C++
// g++ -fopenmp -I .. -O3 -DNDEBUG -finline-limit=1000 benchmarkX.cpp -o b && time ./b
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#include <Eigen/Core>
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using namespace std;
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USING_PART_OF_NAMESPACE_EIGEN
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#ifndef MATTYPE
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#define MATTYPE MatrixXLd
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#endif
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#ifndef MATSIZE
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#define MATSIZE 400
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#endif
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#ifndef REPEAT
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#define REPEAT 100
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#endif
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int main(int argc, char *argv[])
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{
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MATTYPE I = MATTYPE::Ones(MATSIZE,MATSIZE);
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MATTYPE m(MATSIZE,MATSIZE);
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for(int i = 0; i < MATSIZE; i++) for(int j = 0; j < MATSIZE; j++)
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{
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m(i,j) = (i+j+1)/(MATSIZE*MATSIZE);
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}
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for(int a = 0; a < REPEAT; a++)
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{
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m = I + 0.0001 * (m + m*m);
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}
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cout << m(0,0) << endl;
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return 0;
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}
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