#include <sys/__endian.h>
BSD / POSIX › Types & conventions

sys/__endian.h

3 macros

macroLITTLE_ENDIAN

#define LITTLE_ENDIAN __DARWIN_LITTLE_ENDIAN

macroBIG_ENDIAN

#define BIG_ENDIAN __DARWIN_BIG_ENDIAN

macroPDP_ENDIAN

#define PDP_ENDIAN __DARWIN_PDP_ENDIAN