primesieve
7.4
prev_prime.cpp
Iterate backwards over primes using
primesieve::iterator
.
#include <
primesieve.hpp
>
#include <iostream>
int
main()
{
primesieve::iterator
it;
it.
skipto
(2000);
uint64_t prime = it.
prev_prime
();
// iterate over primes from 2000 to 1000
for
(; prime >= 1000; prime = it.
prev_prime
())
std::cout << prime << std::endl;
return
0;
}
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