1 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 2 defined(_GNU_SOURCE) || defined(_BSD_SOURCE) 3 #define PAGE_SIZE 4096 4 #define LONG_BIT 64 5 #endif 6 7 #define LONG_MAX 0x7fffffffffffffffL 8 #define LLONG_MAX 0x7fffffffffffffffLL 9