primesieve
5.6.0
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previous_prime.cpp
This example shows how to iterate backwards over primes.
#include <
primesieve.hpp
>
#include <iostream>
int
main()
{
primesieve::iterator
pi;
pi.
skipto
(2000);
uint64_t prime;
// iterate backwards over the primes between 2000 and 1000
while
((prime = pi.
previous_prime
()) >= 1000)
std::cout << prime << std::endl;
return
0;
}
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