On 8 August 2013 12:53, Brian Gladman <b...@gladman.plus.com> wrote: > On 08/08/2013 11:38, degski wrote: > > > "It is possible that 'long long' types and 'intmax_t' types are not > > distinguishable so it sees two overloads that it cannot disambiguate." > > > > This is the problem: > > > > typedef long long intmax_t; > > typedef unsigned long long uintmax_t; > > > > Is what going on on VS2012 c++11, x64. > > Yes, these are long long types on Windows x64 > > > signed long long int seems to be the same as long long, the same for the > > unsigned versions. > > I understand that 'signed long long' is the same type as 'long long' but > are you saying that 'unsigned long long' is also the same type as > 'long long'? That doesn't seem right to me. >
He just means unsigned long long is the same as unsigned long long int, I guess. Certainly the signed and unsigned versions are different. > > > The GMP signatures for the first two functions are: > > > > void *mpz_set_ui* (mpz_t rop, unsigned long int op) > > void *mpz_set_si* (mpz_t rop, signed long int op) > > MPIR defines these as: > > void mpz_set_ui(mpz_ptr, mpir_ui); > void mpz_set_si(mpz_ptr, mpir_si); > > where mpir_ui/si map to long types everywhere except on Windows x64 > where they map to long long types. > > > So it comes down to the LP64 vs the LLP64, (long is 32-bit on Win and > > 64-bit on Lin) I guess some macro's to properly deal with the windows > case > > and the bitness of the build are in order. > > I don't understand this - can you elaborate please. > He's just referring to the fact that on 64 bit linux long is 64 bits, whereas on Windows it's 32 bits. So he's recommending that we fix the problem with some macros which distinguish whether we are on Windows or not, and whether the machine is 32 bits or 64 bits. I guess we were already doing this, but we got it wrong somewhere. Specifically, you cannot overload a function for intmax_t and long long because they are the same type. On 64 bit linux it is worse because intmax_t, long and long long are effectively all the same type (not actually sure long and long long are the same on 64 bit linux, haven't checked, but it's feasible, as they are both 64 bits). Bill. > > Brian > > -- > 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/groups/opt_out. > -- 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/groups/opt_out.
