#include "sieve.h"

namespace sieve {

using namespace std;

primes_t primes(size_t n)
{
    primes_t result;

    vector<char> sieve(n, false);

    for (size_t p = 2; p < n; ++p) {

        if (sieve[p])
            continue;

        result.push_back(p);

        for (size_t i = p*p; i < n; i += p) {

            sieve[i] = true;
        }
    }

    return result;
}

}