* Cyril Hrubis: > As far as I can tell the userspace bits/types.h does exactly the same > check in order to define uint64_t and int64_t, i.e.: > > #if __WORDSIZE == 64 > typedef signed long int __int64_t; > typedef unsigned long int __uint64_t; > #else > __extension__ typedef signed long long int __int64_t; > __extension__ typedef unsigned long long int __uint64_t; > #endif > > The macro __WORDSIZE is defined per architecture, and it looks like the > defintions in glibc sources in bits/wordsize.h match the uapi > asm/bitsperlong.h. But I may have missed something, the code in glibc is > not exactly easy to read. __WORDSIZE isn't exactly a standard libc macro. On musl, x86-64 x32 has __WORDSIZE == 64 depending on header-inclusion order, but that's probably just a bug. Thanks, Florian
