code

#include <time.h>
#include <cstdlib>
#include <iostream>
#include <vector>

using namespace std;

//#define MANUAL_INLINE

#if 1

#if 1
#define FORCE_INLINE1 __forceinline
#define FORCE_INLINE2
#else
#define FORCE_INLINE1
#define FORCE_INLINE2 __attribute__((always_inline))
#endif

#endif

struct ASD  {
    float e;

    ASD(float e)
        :e(e)
    {}

    FORCE_INLINE1 bool test(const ASD& y)const FORCE_INLINE2 {
        return e<y.e;
    }
};

int main(){

#ifdef MANUAL_INLINE
    freopen( "manual"   ,"w",stdout);
#else
    freopen( "compiler" ,"w",stdout);
#endif


    srand(time(NULL));

    ASD& a=*new ASD((float)(rand())/RAND_MAX);
    ASD& b=*new ASD(2.0+(float)(rand())/RAND_MAX);

    clock_t start,end;
    const int N=50,n=100000000;

    int *asd=new int[16];
    vector<double> times;

    for(int i=0;i<N;i++){

        start = clock();

        for(int j=n;--j>0;)
#ifdef MANUAL_INLINE
            asd[j%16]=a.e<b.e;
#else
            asd[j%16]=a.test(b);
#endif

        end = clock();
        times.push_back(double(n)/(end - start));
    }
    for(int i=0;i<times.size();i++)
        cout<<i<<" "<<times[i]<<endl;

    return 0;
}