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ppm-guest pushed a commit to annotated tag v0.13
in repository libmath-prime-util-perl.
commit 62f61f8828703043a5d24c29cc652e3f28d3d0b2
Author: Dana Jacobsen <d...@acm.org>
Date: Mon Nov 5 01:25:44 2012 -0800
Add option to ensure all output has gone through primality proving
---
bin/primes.pl | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/bin/primes.pl b/bin/primes.pl
index a0c11c7..091a71a 100755
--- a/bin/primes.pl
+++ b/bin/primes.pl
@@ -3,8 +3,9 @@ use strict;
use warnings;
use Getopt::Long;
use Math::BigInt try => 'GMP';
-use Math::Prime::Util qw/primes is_prime next_prime prev_prime
- prime_count primorial pn_primorial/;
+use Math::Prime::Util qw/primes prime_count next_prime prev_prime
+ is_prime is_provable_prime
+ prime_count primorial pn_primorial/;
$| = 1;
# For many more types, see:
@@ -90,6 +91,7 @@ GetOptions(\%opts,
'pnp1|A005234',
'pnm1|A006794',
'euclid|A018239',
+ 'provable',
'nompugmp', # turn off MPU::GMP for debugging
'help',
) || die_usage();
@@ -470,6 +472,9 @@ sub gen_and_filter {
if (exists $opts{'good'}) {
@p = grep { is_good_prime($_); } @p;
}
+ if (exists $opts{'provable'}) {
+ @p = grep { is_provable_prime($_) == 2; } @p;
+ }
@p;
}
@@ -538,6 +543,7 @@ to only those primes additionally meeting these conditions:
--pnp1 Primorial+1 p#+1 is prime
--pnm1 Primorial-1 p#-1 is prime
--euclid Euclid pn#+1 is prime
+ --provable Ensure all primes are provably prime
Note that options can be combined, e.g. display only safe twin primes.
In all cases involving multiples (twin, triplet, etc.), the value returned
--
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