48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
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#include <iostream>
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#include <Eigen/Core>
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#include <Eigen/Geometry>
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#include <bench/BenchTimer.h>
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using namespace Eigen;
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template<typename Quat>
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EIGEN_DONT_INLINE void quatmul_default(const Quat& a, const Quat& b, Quat& c)
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{
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c = a * b;
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}
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template<typename Quat>
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EIGEN_DONT_INLINE void quatmul_novec(const Quat& a, const Quat& b, Quat& c)
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{
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c = internal::quat_product<0, Quat, Quat, typename Quat::Scalar, Aligned>::run(a,b);
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}
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template<typename Quat> void bench(const std::string& label)
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{
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int tries = 10;
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int rep = 1000000;
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BenchTimer t;
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Quat a(4, 1, 2, 3);
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Quat b(2, 3, 4, 5);
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Quat c;
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std::cout.precision(3);
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BENCH(t, tries, rep, quatmul_default(a,b,c));
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std::cout << label << " default " << 1e3*t.best(CPU_TIMER) << "ms \t" << 1e-6*double(rep)/(t.best(CPU_TIMER)) << " M mul/s\n";
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BENCH(t, tries, rep, quatmul_novec(a,b,c));
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std::cout << label << " novec " << 1e3*t.best(CPU_TIMER) << "ms \t" << 1e-6*double(rep)/(t.best(CPU_TIMER)) << " M mul/s\n";
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}
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int main()
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{
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bench<Quaternionf>("float ");
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bench<Quaterniond>("double");
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return 0;
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}
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