# The following was supposedly scribed by
# Eric Wilhelm
# on Saturday 21 August 2004 07:38 pm:
>Is there a "vgmp_printf" function? Sounds like you'll need one.
Okay, there is gmp_vprintf(), but it isn't going to do you any good.
Looking at the minprintf() example in K&R's "The C Programming Language", it
sounds like you're basically going to end up doing the same thing unless you
can discover the non-portable tricks that everyone keeps talking about.
An excerpt of my adaptation:
case 's':
sv = va_arg(ap, SV *);
if(! SvPOK(sv))
croak("not a valid string\n");
I think va_list is absolutely the wrong way to go. I've been messing with it
a little and can't get even the SvPOK call above to not segfault.
Basically, my understanding is that the Inline_Stack_Vars macros take the
place of the va_start and va_args, etc.
So, because you can't (portably) build a var-arg list at runtime, you're stuck
refactoring or rewriting whatever C code you're trying to use (as in vprintf,
etc.)
Maybe you'll have to step-through the format and use sprintf on each element,
then printf the result.
Maybe you should just dynamically write some static code and use Inline::C in
that way.
--Eric
--
"Cleanliness is next to impossible."
--Unknown
