Re: [pdf-devel] pdf-i64 macros

[jemarch]

   Yep, due to the error report they are not fully compatible (the macros 
   don't return a pdf_status_t as the functions do).

   What about forgetting the errors in the 64bit module and set all 
   functions returning void?

Errors can happens in the pdf-64t code, so we definitely dont want to
ignore the error conditions.

Maybe we could use one of the values of the 64bit integers (such as
the larger one) and to recognize an error condition when that special
value is found in a result.

So:

   pdf_i64_add(&bignum1, bignum2, bignum3);
   if (pdf_i64_invalid_p(bignum1))
   {
    /* An error occurred */
   }

Aleks, would the time module be happy with 2^63 different values in
unsigned integer variables?