/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_PRIME_NUMBERS_H
#define __LINUX_PRIME_NUMBERS_H
#include <linux/types.h>
bool is_prime_number(unsigned long x);
unsigned long next_prime_number(unsigned long x);
/**
* for_each_prime_number - iterate over each prime upto a value
* @ prime : the current prime number in this iteration
* @ max : the upper limit
*
* Starting from the first prime number 2 iterate over each prime number up to
* the @ max value . On each iteration , @ prime is set to the current prime number .
* @ max should be less than ULONG_MAX to ensure termination . To begin with
* @ prime set to 1 on the first iteration use for_each_prime_number_from ( )
* instead .
*/
#define for_each_prime_number(prime, max) \
for_each_prime_number_from((prime), 2 , (max))
/**
* for_each_prime_number_from - iterate over each prime upto a value
* @ prime : the current prime number in this iteration
* @ from : the initial value
* @ max : the upper limit
*
* Starting from @ from iterate over each successive prime number up to the
* @ max value . On each iteration , @ prime is set to the current prime number .
* @ max should be less than ULONG_MAX , and @ from less than @ max , to ensure
* termination .
*/
#define for_each_prime_number_from(prime, from, max) \
for (prime = (from); prime <= (max); prime = next_prime_number(prime))
#endif /* !__LINUX_PRIME_NUMBERS_H */
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