In mpir.h (and gmp-h.in from which it is generated unless I miss my guess), starting at line 66, the following code can be found:
/* #if defined(__GMP_WITHIN_CONFIGURE) && defined(_WIN64) */ #ifdef __WIN64 #define _LONG_LONG_LIMB 1 #endif In my humble opinion its intent is to deal with the fact that long is a 32 bit value when using MSVC to compile for AMD64 targets by defining _LONG_LONG_LIMB, which in turn will cause long long to be used instead. However, at least when using MingW64 to compile to a Windows DLL, the output header mpir.h contains the same lines. MSVC does not define __WIN64 (it does define _WIN64 instead -- note the number of underbars) and therefore will assume that _LONG_LONG_LIMB is *not* defined. As a result, when using the DLL from MSVC, it will assume that e.g. mpir_ui is unsigned long - which works surprisingly well for being completely wrong. As a simple fix, the following works for me: #if defined(__WIN64) || defined(_WIN64) #define _LONG_LONG_LIMB 1 #endif Hopefully this suggestion is somewhat helpful and not just wasting your time ;) -- You received this message because you are subscribed to the Google Groups "mpir-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to mpir-devel+unsubscr...@googlegroups.com. To post to this group, send email to mpir-devel@googlegroups.com. Visit this group at http://groups.google.com/group/mpir-devel. For more options, visit https://groups.google.com/d/optout.
