Then again perl has been compiled with -Duse64bitint if that makes any difference.

Yes ... it probably does make a difference. I had missed that Cygwin's perl was also compiled with use64bitint.

Does it make sense to build perl with use64bitint, for a 32-bit machine, with $Config{longsize} set to 4 ? My Cygwin perl certainly isn't giving me 64-bit int handling capability. As with my other perls, only integers up to 53 bits can be handled accurately.

Anyway, my problem is that the following xs code is not portable: 
long i;
if(SvIOK(a)) i = SvIV(a);

[download]
On my Cygwin perl I need to: 
double d;
if(SvIOK(a)) d = SvNV(a);

[download]
or perhaps (untested): 
long long ii;
if(SvIOK(a)) ii = (long long)SvIV(a);

[download]
I guess I just need to rethink what I'm trying to do.

Thanks parv.

Cheers,
Rob

In reply to Re^2: Cygwin perl and (internal) numeric representations. by syphilis
in thread Cygwin perl and (internal) numeric representations. by syphilis

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