diff options
Diffstat (limited to 'primes/primes.h')
| -rw-r--r-- | primes/primes.h | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/primes/primes.h b/primes/primes.h index a032c9b4..20da4ef6 100644 --- a/primes/primes.h +++ b/primes/primes.h @@ -1,4 +1,4 @@ -/* $NetBSD: primes.h,v 1.5 2003/08/07 09:37:34 agc Exp $ */ +/* $NetBSD: primes.h,v 1.6 2014/10/02 21:36:37 ast Exp $ */ /* * Copyright (c) 1989, 1993 @@ -37,14 +37,38 @@ /* * primes - generate a table of primes between two values * - * By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo + * By Landon Curt Noll, http://www.isthe.com/chongo/index.html /\oo/\ * - * chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\ */ -/* ubig is the type that holds a large unsigned value */ -typedef unsigned long ubig; /* must be >=32 bit unsigned value */ -#define BIG ULONG_MAX /* largest value will sieve */ +#include <stdint.h> /* bytes in sieve table (must be > 3*5*7*11) */ #define TABSIZE 256*1024 + +/* + * prime[i] is the (i-1)th prime. + * + * We are able to sieve 2^32-1 because this byte table yields all primes + * up to 65537 and 65537^2 > 2^32-1. + */ + +extern const uint64_t prime[]; /* must be >=32 bit unsigned values */ +extern const uint64_t *const pr_limit; /* largest prime in the prime array */ + +/* Maximum size sieving alone can handle. */ +#define SIEVEMAX 4295098368ULL + +/* + * To avoid excessive sieves for small factors, we use the table below to + * setup our sieve blocks. Each element represents an odd number starting + * with 1. All non-zero elements are factors of 3, 5, 7, 11 and 13. + */ +extern const char pattern[]; +extern const size_t pattern_size; /* length of pattern array */ + +/* Test for primality using strong pseudoprime tests. */ +int isprime(uint64_t); + +/* Maximum value which the SPSP code can handle. */ +#define SPSPMAX 3825123056546413050ULL |