Marc Girod wrote:
>
> Where does IV come from is what I'll try to find next.
>
This seems to be from the perlapi:
sv_iv A private implementation of the "SvIVx" macro for compilers
which can't cope with complex macro expressions. Always use
the
macro instead.
IV sv_iv(SV* sv)
In /usr/lib/perl5/5.10/i686-cygwin/CORE/perl.h:
...
/*
The IV type is supposed to be long enough to hold any integral
value or a pointer.
--Andy Dougherty August 1996
*/
typedef IVTYPE IV;
Now, you'd ask... what about IVTYPE?
/usr/lib/perl5/5.10/i686-cygwin/CORE/config.h has:
/* IVTYPE:
* This symbol defines the C type used for Perl's IV.
*/
...
#define IVTYPE long long /**/
/usr/lib/perl5/5.10/i686-cygwin/CORE/uconfig.h this:
#define IVTYPE long /**/
and /usr/lib/perl5/5.10/i686-cygwin/Devel/PPPort.pm various definitions
depending on context:
# ifdef INTSIZE
#ifndef IVSIZE
# define IVSIZE INTSIZE
#endif
# endif
# else
# if defined(convex) || defined(uts)
#ifndef IVTYPE
# define IVTYPE long long
#endif
...
# ifdef LONGLONGSIZE
#ifndef IVSIZE
# define IVSIZE LONGLONGSIZE
#endif
# endif
# else
#ifndef IVTYPE
# define IVTYPE long
#endif
So, it very much depends which definition is hit first...
Marc
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