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_primesieve.pyx
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_primesieve.pyx
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from libc.stdint cimport uint64_t, int64_t
from libcpp.vector cimport vector
cimport cpp_primesieve
cpdef vector[uint64_t] primes(uint64_t a, uint64_t b = 0) except +:
"""Generate a list of primes"""
cdef vector[uint64_t] primes
if b == 0:
(a,b) = (0,a)
cpp_primesieve.generate_primes[uint64_t](a, b, &primes)
return primes
cpdef vector[uint64_t] n_primes(uint64_t n, uint64_t start = 0) except +:
"""List the first n primes >= start"""
cdef vector[uint64_t] primes
cpp_primesieve.generate_n_primes[uint64_t](n, start, &primes)
return primes
cpdef uint64_t nth_prime(int64_t n, uint64_t start = 0) except +:
"""Find the nth prime > start"""
return cpp_primesieve.parallel_nth_prime(n, start)
cpdef uint64_t count_primes(uint64_t a, uint64_t b = 0) except +:
"""Count prime numbers"""
if b == 0:
(a,b) = (0,a)
return cpp_primesieve.parallel_count_primes(a, b)
cpdef uint64_t count_twins(uint64_t a, uint64_t b = 0) except +:
"""Count twin primes """
if b == 0:
(a,b) = (0,a)
return cpp_primesieve.parallel_count_twins(a, b)
cpdef uint64_t count_triplets(uint64_t a, uint64_t b = 0) except +:
"""Count prime triplets """
if b == 0:
(a,b) = (0,a)
return cpp_primesieve.parallel_count_triplets(a, b)
cpdef uint64_t count_quadruplets(uint64_t a, uint64_t b = 0) except +:
"""Count prime quadruplets """
if b == 0:
(a,b) = (0,a)
return cpp_primesieve.parallel_count_quadruplets(a, b)
cpdef uint64_t count_quintuplets(uint64_t a, uint64_t b = 0) except +:
"""Count prime quintuplets """
if b == 0:
(a,b) = (0,a)
return cpp_primesieve.parallel_count_quintuplets(a, b)
cpdef uint64_t count_sextuplets(uint64_t a, uint64_t b = 0) except +:
"""Count prime sextuplets """
if b == 0:
(a,b) = (0,a)
return cpp_primesieve.parallel_count_sextuplets(a, b)
cpdef void print_primes(uint64_t a, uint64_t b = 0) except +:
"""Print prime numbers to stdout"""
if b == 0:
(a,b) = (0,a)
cpp_primesieve.print_primes(a, b)
cpdef void print_twins(uint64_t a, uint64_t b = 0) except +:
"""Print twin primes to stdout"""
if b == 0:
(a,b) = (0,a)
cpp_primesieve.print_twins(a, b)
cpdef void print_triplets(uint64_t a, uint64_t b = 0) except +:
"""Print prime triplets to stdout"""
if b == 0:
(a,b) = (0,a)
cpp_primesieve.print_triplets(a, b)
cpdef void print_quadruplets(uint64_t a, uint64_t b = 0) except +:
"""Print prime quadruplets to stdout"""
if b == 0:
(a,b) = (0,a)
cpp_primesieve.print_quadruplets(a, b)
cpdef void print_quintuplets(uint64_t a, uint64_t b = 0) except +:
"""Print prime quintuplets to stdout"""
if b == 0:
(a,b) = (0,a)
cpp_primesieve.print_quintuplets(a, b)
cpdef void print_sextuplets(uint64_t a, uint64_t b = 0) except +:
"""Print prime sextuplets to stdout"""
if b == 0:
(a,b) = (0,a)
cpp_primesieve.print_sextuplets(a, b)
cpdef int get_num_threads() except +:
"""Get the currently set number of threads"""
return cpp_primesieve.get_num_threads()
cpdef void set_num_threads(int threads) except +:
"""Set the number of threads for sieving"""
cpp_primesieve.set_num_threads(threads)
cdef class Iterator:
cdef cpp_primesieve.iterator _iterator
def __cinit__(self):
self._iterator = cpp_primesieve.iterator()
cpdef void skipto(self, uint64_t start, uint64_t stop_hint = 2**62) except +:
self._iterator.skipto(start, stop_hint)
cpdef uint64_t next_prime(self) except +:
return self._iterator.next_prime()
cpdef uint64_t prev_prime(self) except +:
return self._iterator.previous_prime()