#include typedef enum { /* nonstd/syscall.h */ SYSCALL_LOOKUP, /* errno.h */ ERRNO, /* locale.h */ THREAD_LOCALE, GLOBAL_LOCALE, LCONV, LOAD_LOCALE, /* [w]ctype.h */ CTYPE, TOLOWER, TOUPPER, /* stdio.h */ FILE_STREAMS, PRINTF, SCANF, /* stdlib.h */ ATEXIT, RAND } LIBC_INTERNAL;