#define clock_start usize freq=0;\
    u64 begin=rdtsc_64bits();
#define clock_end u64 end=rdtsc_64bits(); \
	printf("          execute cycle(s) %llu, %zu operation(s) take place!\n",end-begin,freq);

#define record_start u64 r_begin=rdtsc_64bits();
#define record_end(x) output_csv(x,r_begin);

// #define record_start ;
// #define record_end(x) ;

unsigned long long int rdtsc_64bits();
void output_csv(char * filename,unsigned long long int old);