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ab4046970b
* Use them to write an unrolled path in echelon.cpp, as an experiment before I do this LU module. * For floating-point types, make ei_random() use an amplitude of 1.
35 lines
640 B
C++
35 lines
640 B
C++
// g++ -O3 -DNDEBUG benchmarkX.cpp -o benchmarkX && time ./benchmarkX
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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 1000000
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#endif
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#ifndef REPEAT
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#define REPEAT 1000
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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,1);
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MATTYPE m(MATSIZE,1);
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for(int i = 0; i < MATSIZE; i++) for(int j = 0; j < 1; j++)
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{
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m(i,j) = 0.1 * (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 = MATTYPE::ones(MATSIZE,1) + 0.00005 * (m.cwiseProduct(m) + m/4);
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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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