Re: Math::Prime::FastSieve v0.12

----- Original Message ----- 
From: "David Oswald"

> I've also taken Dana's suggestion and used unsigned longs internally
> (and longs as parameters).  This allows Perl's built with long support
> to handle (theoretically) sieves up to 9.2e18.  ( 2^64 / 2 --- if we
> were passing unsigned longs as params it would be 2^64, but
> Inline::CPP's typemap doesn't yet support unsigned longs, so we pass
> longs).

IINM you can easily pass an unsigned long to a function that takes a long as 
its parameter:

################################
use warnings;

use Inline Config =>
    BUILD_NOISY => 1;

use Inline CPP => <<'EOCPP';

void bar(long x) {
     unsigned long ul = x;
     printf("%u", ul);
}

EOCPP

my $x = 4294967233;
bar($x); # prints 4294967233 for me
             # on 5.14.0 and 5.6.2
################################

Is the typemapping of unsigned long that occurs in the perl typemap 
unsuitable for Inline::CPP ? ... or is it just that not all versions of perl 
provided typemapping of 'unsigned long' ?

If it's the latter, you could just supply your own typemap with the M::P::FS 
source, for those versions of perl that don't typemap 'unsigned long'. The 
typemap you provide would have a copy'n'paste of the 'unsigned long' 
typemapping from one of the later perl typemaps.
At least, that approach worked with Inline::C.

Cheers,
Rob