int main()
{
double start = time_please();
int large_number1 = 2000000;
int large_number2 = 2324500;
#pragma omp parallel num_threads(2)
if (omp_get_thread_num() == 0) {
prime1(large_number1);
}
if (omp_get_thread_num() == 1) {
prime1(large_number2);
}
#pragma omp barrier
double end = time_please();
std::cout << "threads completed in: " << end - start << std::endl;
start = time_please();
prime1(large_number1);
prime1(large_number2);
end = time_please();
std::cout << "non-threads completed in: " << end - start << std::endl;
return 0;
}
int main()
{
FILE *fin=fopen("pprime.in","r");
FILE *fout=fopen("pprime.out","w");
int a,b,i,num;
clock_t begin, end;
double cost;
begin = clock();
fscanf(fin,"%d %d",&a,&b);
if((b-a)>500000)
num=prime1(pnum,a,b);
else{
num=prime2(pnum,a,b);
start=0;
}
for (i = start; i < num ; i++){
if(pnum[i]>=a)
if(ispal(pnum[i]))
fprintf(fout,"%d\n",pnum[i]);
}
end = clock();
cost = (double)(end - begin) / CLOCKS_PER_SEC;
printf("%lf seconds\n", cost);
return 0;
}
