case _SC_XBS5_ILP32_OFF32: #ifdef _XBS5_ILP32_OFF32 return _XBS5_ILP32_OFF32; #else return -1; #endif case _SC_XBS5_ILP32_OFFBIG: #ifdef _XBS5_ILP32_OFFBIG return _XBS5_ILP32_OFFBIG; #else return -1; #endif case _SC_XBS5_LP64_OFF64: #ifdef _XBS5_LP64_OFF64 return _XBS5_LP64_OFF64; #else return -1; #endif case _SC_XBS5_LPBIG_OFFBIG: #ifdef _XBS5_LPBIG_OFFBIG return _XBS5_LPBIG_OFFBIG; #else return -1; #endif  case _SC_XOPEN_LEGACY: return _XOPEN_LEGACY;  case _SC_XOPEN_REALTIME: #ifdef _XOPEN_REALTIME return _XOPEN_REALTIME; #else return -1; #endif case _SC_XOPEN_REALTIME_THREADS: #ifdef _XOPEN_REALTIME_THREADS return _XOPEN_REALTIME_THREADS; #else return -1; #endif
__sysconf (name)     int name;{  switch (name)    {    default:      __set_errno (EINVAL);      return -1;    case _SC_ARG_MAX:#ifdef	ARG_MAX      return ARG_MAX;#else      return -1;#endif    case _SC_CHILD_MAX:#ifdef	CHILD_MAX      return CHILD_MAX;#else      return -1;#endif    case _SC_CLK_TCK:#ifdef	CLK_TCK      return CLK_TCK;#else      return 60;#endif    case _SC_NGROUPS_MAX:#ifdef	NGROUPS_MAX      return NGROUPS_MAX;#else      return -1;#endif    case _SC_OPEN_MAX:      return __getdtablesize ();    case _SC_STREAM_MAX:#ifdef	STREAM_MAX      return STREAM_MAX;#else      return FOPEN_MAX;#endif    case _SC_TZNAME_MAX:      return __tzname_max ();    case _SC_JOB_CONTROL:#ifdef	_POSIX_JOB_CONTROL      return 1;#else      return -1;#endif    case _SC_SAVED_IDS:#ifdef	_POSIX_SAVED_IDS      return 1;#else      return -1;#endif    case _SC_REALTIME_SIGNALS:#ifdef	_POSIX_REALTIME_SIGNALS      return 1;#else      return -1;#endif    case _SC_PRIORITY_SCHEDULING:#ifdef	_POSIX_PRIORITY_SCHEDULING      return 1;#else      return -1;#endif    case _SC_TIMERS:#ifdef	_POSIX_TIMERS      return 1;#else      return -1;#endif    case _SC_ASYNCHRONOUS_IO:#ifdef	_POSIX_ASYNCHRONOUS_IO      return 1;#else      return -1;#endif    case _SC_PRIORITIZED_IO:#ifdef	_POSIX_PRIORITIZED_IO      return 1;#else      return -1;#endif    case _SC_SYNCHRONIZED_IO:#ifdef	_POSIX_SYNCHRONIZED_IO      return 1;#else      return -1;#endif    case _SC_FSYNC:#ifdef	_POSIX_FSYNC      return 1;#else      return -1;#endif    case _SC_MAPPED_FILES:#ifdef	_POSIX_MAPPED_FILES      return 1;#else      return -1;#endif    case _SC_MEMLOCK:#ifdef	_POSIX_MEMLOCK      return 1;#else      return -1;#endif    case _SC_MEMLOCK_RANGE:#ifdef	_POSIX_MEMLOCK_RANGE      return 1;#else      return -1;#endif    case _SC_MEMORY_PROTECTION:#ifdef	_POSIX_MEMORY_PROTECTION      return 1;#else      return -1;#endif    case _SC_MESSAGE_PASSING:#ifdef	_POSIX_MESSAGE_PASSING      return 1;#else      return -1;#endif    case _SC_SEMAPHORES:#ifdef	_POSIX_SEMAPHORES      return 1;#else      return -1;#endif    case _SC_SHARED_MEMORY_OBJECTS:#ifdef	_POSIX_SHARED_MEMORY_OBJECTS      return 1;#else      return -1;#endif    case _SC_VERSION:      return _POSIX_VERSION;    case _SC_PAGESIZE:      return __getpagesize ();    case _SC_AIO_LISTIO_MAX:#ifdef	AIO_LISTIO_MAX      return AIO_LISTIO_MAX;#else      return -1;#endif    case _SC_AIO_MAX:#ifdef	AIO_MAX      return AIO_MAX;#else      return -1;#endif    case _SC_AIO_PRIO_DELTA_MAX:#ifdef	AIO_PRIO_DELTA_MAX      return AIO_PRIO_DELTA_MAX;#else      return -1;#endif    case _SC_DELAYTIMER_MAX:#ifdef	DELAYTIMER_MAX      return DELAYTIMER_MAX;#else      return -1;#endif    case _SC_MQ_OPEN_MAX:#ifdef	MQ_OPEN_MAX      return MQ_OPEN_MAX;#else      return -1;#endif    case _SC_MQ_PRIO_MAX:#ifdef	MQ_PRIO_MAX      return MQ_PRIO_MAX;#else      return -1;#endif    case _SC_RTSIG_MAX:#ifdef	RTSIG_MAX      return RTSIG_MAX;#else      return -1;#endif    case _SC_SEM_NSEMS_MAX:#ifdef	SEM_NSEMS_MAX      return SEM_NSEMS_MAX;#else      return -1;#endif    case _SC_SEM_VALUE_MAX:#ifdef	SEM_VALUE_MAX      return SEM_VALUE_MAX;#else      return -1;#endif    case _SC_SIGQUEUE_MAX:#ifdef	SIGQUEUE_MAX      return SIGQUEUE_MAX;#else      return -1;#endif    case _SC_TIMER_MAX:#ifdef	TIMER_MAX      return TIMER_MAX;#else      return -1;#endif    case _SC_BC_BASE_MAX:#ifdef	BC_BASE_MAX      return BC_BASE_MAX;#else      return -1;#endif    case _SC_BC_DIM_MAX:#ifdef	BC_DIM_MAX      return BC_DIM_MAX;#else      return -1;#endif    case _SC_BC_SCALE_MAX:#ifdef	BC_SCALE_MAX      return BC_SCALE_MAX;#else      return -1;#endif    case _SC_BC_STRING_MAX:#ifdef	BC_STRING_MAX      return BC_STRING_MAX;#else      return -1;#endif    case _SC_COLL_WEIGHTS_MAX:#ifdef	COLL_WEIGHTS_MAX      return COLL_WEIGHTS_MAX;#else      return -1;#endif    case _SC_EQUIV_CLASS_MAX:#ifdef	EQUIV_CLASS_MAX      return EQUIV_CLASS_MAX;#else      return -1;#endif    case _SC_EXPR_NEST_MAX:#ifdef	EXPR_NEST_MAX      return EXPR_NEST_MAX;#else      return -1;#endif    case _SC_LINE_MAX:#ifdef	LINE_MAX      return LINE_MAX;#else      return -1;#endif    case _SC_RE_DUP_MAX:#ifdef	RE_DUP_MAX      return RE_DUP_MAX;#else      return -1;#endif    case _SC_CHARCLASS_NAME_MAX:#ifdef	CHARCLASS_NAME_MAX      return CHARCLASS_NAME_MAX;#else      return -1;#endif    case _SC_PII:#ifdef	_POSIX_PII      return 1;#else      return -1;#endif    case _SC_PII_XTI:#ifdef	_POSIX_PII_XTI      return 1;#else      return -1;#endif    case _SC_PII_SOCKET:#ifdef	_POSIX_PII_SOCKET      return 1;#else      return -1;#endif    case _SC_PII_INTERNET:#ifdef	_POSIX_PII_INTERNET      return 1;#else      return -1;#endif    case _SC_PII_OSI:#ifdef	_POSIX_PII_OSI      return 1;#else      return -1;#endif    case _SC_POLL:#ifdef	_POSIX_POLL      return 1;#else      return -1;#endif    case _SC_SELECT:#ifdef	_POSIX_SELECT      return 1;#else      return -1;#endif    case _SC_UIO_MAXIOV:#ifdef	UIO_MAXIOV      return UIO_MAXIOV;#else      return -1;#endif    case _SC_PII_INTERNET_STREAM:#ifdef	_POSIX_PII_INTERNET_STREAM      return 1;#else      return -1;#endif    case _SC_PII_INTERNET_DGRAM:#ifdef	_POSIX_PII_INTERNET_DGRAM      return 1;#else      return -1;#endif    case _SC_PII_OSI_COTS:#ifdef	_POSIX_PII_OSI_COTS      return 1;#else      return -1;#endif    case _SC_PII_OSI_CLTS:#ifdef	_POSIX_PII_OSI_CLTS      return 1;#else      return -1;#endif    case _SC_PII_OSI_M:#ifdef	_POSIX_PII_OSI_M      return 1;#else      return -1;#endif    case _SC_T_IOV_MAX:#ifdef	_T_IOV_MAX      return _T_IOV_MAX;#else      return -1;#endif    case _SC_2_VERSION:      /* This is actually supposed to return the version	 of the 1003.2 utilities on the system {POSIX2_VERSION}.  */      return _POSIX2_C_VERSION;    case _SC_2_C_BIND:#ifdef	_POSIX2_C_BIND      return _POSIX2_C_BIND;#else      return -1;#endif    case _SC_2_C_DEV:#ifdef	_POSIX2_C_DEV      return _POSIX2_C_DEV;#else      return -1;#endif    case _SC_2_C_VERSION:#ifdef	_POSIX2_C_VERSION      return _POSIX2_C_VERSION;#else      return -1;#endif    case _SC_2_FORT_DEV:#ifdef	_POSIX2_FORT_DEV      return _POSIX2_FORT_DEV;#else      return -1;#endif    case _SC_2_LOCALEDEF:#ifdef	_POSIX2_LOCALEDEF      return _POSIX2_LOCALEDEF;#else      return -1;#endif    case _SC_2_SW_DEV:#ifdef	_POSIX2_SW_DEV      return _POSIX2_SW_DEV;#else      return -1;#endif    case _SC_2_CHAR_TERM:#ifdef	_POSIX2_CHAR_TERM      return _POSIX2_CHAR_TERM;#else      return -1;#endif    case _SC_2_UPE:#ifdef	_POSIX2_UPE      return _POSIX2_UPE;#else      return -1;#endif      /* POSIX 1003.1c (POSIX Threads).  */    case _SC_THREADS:#ifdef	_POSIX_THREADS      return 1;#else      return -1;#endif    case _SC_THREAD_SAFE_FUNCTIONS:#ifdef	_POSIX_THREAD_SAFE_FUNCTIONS      return 1;#else      return -1;#endif    case _SC_GETGR_R_SIZE_MAX:#ifdef	NSS_BUFLEN_GROUP      return NSS_BUFLEN_GROUP;#else      return -1;#endif    case _SC_GETPW_R_SIZE_MAX:#ifdef	NSS_BUFLEN_PASSWD      return NSS_BUFLEN_PASSWD;#else      return -1;#endif    case _SC_LOGIN_NAME_MAX:#ifdef	_POSIX_LOGIN_NAME_MAX      return _POSIX_LOGIN_NAME_MAX;#else      return -1;#endif    case _SC_TTY_NAME_MAX:#ifdef	_POSIX_TTY_NAME_MAX      return _POSIX_TTY_NAME_MAX;#else      return -1;#endif    case _SC_THREAD_DESTRUCTOR_ITERATIONS:#ifdef	_POSIX_THREAD_DESTRUCTOR_ITERATIONS      return _POSIX_THREAD_DESTRUCTOR_ITERATIONS;#else      return -1;#endif    case _SC_THREAD_KEYS_MAX:#ifdef	PTHREAD_KEYS_MAX      return PTHREAD_KEYS_MAX;#else      return -1;#endif    case _SC_THREAD_STACK_MIN:#ifdef	PTHREAD_STACK_MIN      return PTHREAD_STACK_MIN;#else      return -1;#endif    case _SC_THREAD_THREADS_MAX:#ifdef	PTHREAD_THREADS_MAX      return PTHREAD_THREADS_MAX;#else      return -1;#endif    case _SC_THREAD_ATTR_STACKADDR:#ifdef	_POSIX_THREAD_ATTR_STACKADDR      return 1;#else      return -1;#endif    case _SC_THREAD_ATTR_STACKSIZE:#ifdef	_POSIX_THREAD_ATTR_STACKSIZE      return 1;#else      return -1;#endif    case _SC_THREAD_PRIORITY_SCHEDULING:#ifdef	_POSIX_THREAD_PRIORITY_SCHEDULING      return 1;#else      return -1;#endif    case _SC_THREAD_PRIO_INHERIT:#ifdef	_POSIX_THREAD_PRIO_INHERIT      return 1;#else      return -1;#endif    case _SC_THREAD_PRIO_PROTECT:#ifdef	_POSIX_THREAD_PRIO_PROTECT      return 1;#else      return -1;#endif    case _SC_THREAD_PROCESS_SHARED:#ifdef	_POSIX_THREAD_PROCESS_SHARED      return 1;#else      return -1;#endif    case _SC_NPROCESSORS_CONF:      return __get_nprocs_conf ();    case _SC_NPROCESSORS_ONLN:      return __get_nprocs ();    case _SC_PHYS_PAGES:      return __get_phys_pages ();    case _SC_AVPHYS_PAGES:      return __get_avphys_pages ();    case _SC_ATEXIT_MAX:      /* We have no limit since we use lists.  */      return INT_MAX;    case _SC_PASS_MAX:      /* We have no limit but since the return value might be used to	 allocate a buffer we restrict the value.  */      return BUFSIZ;    case _SC_XOPEN_VERSION:      return _XOPEN_VERSION;    case _SC_XOPEN_XCU_VERSION:      return _XOPEN_XCU_VERSION;    case _SC_XOPEN_UNIX:      return _XOPEN_UNIX;    case _SC_XOPEN_CRYPT:#ifdef	_XOPEN_CRYPT      return _XOPEN_CRYPT;#else      return -1;#endif    case _SC_XOPEN_ENH_I18N:#ifdef	_XOPEN_ENH_I18N      return _XOPEN_ENH_I18N;#else      return -1;#endif    case _SC_XOPEN_SHM:#ifdef	_XOPEN_SHM      return _XOPEN_SHM;#else      return -1;#endif    case _SC_XOPEN_XPG2:#ifdef	_XOPEN_XPG2      return _XOPEN_XPG2;#else      return -1;#endif    case _SC_XOPEN_XPG3:#ifdef	_XOPEN_XPG3      return _XOPEN_XPG3;#else      return -1;#endif    case _SC_XOPEN_XPG4:#ifdef	_XOPEN_XPG4      return _XOPEN_XPG4;#else      return -1;#endif    case _SC_CHAR_BIT:      return CHAR_BIT;    case _SC_CHAR_MAX:      return CHAR_MAX;    case _SC_CHAR_MIN:      return CHAR_MIN;    case _SC_INT_MAX:      return INT_MAX;    case _SC_INT_MIN:      return INT_MIN;    case _SC_LONG_BIT:      return sizeof (long int) * CHAR_BIT;    case _SC_WORD_BIT:      return sizeof (int) * CHAR_BIT;    case _SC_MB_LEN_MAX:      return MB_LEN_MAX;    case _SC_NZERO:      return NZERO;    case _SC_SSIZE_MAX:      return _POSIX_SSIZE_MAX;    case _SC_SCHAR_MAX:      return SCHAR_MAX;    case _SC_SCHAR_MIN:      return SCHAR_MIN;    case _SC_SHRT_MAX:      return SHRT_MAX;    case _SC_SHRT_MIN:      return SHRT_MIN;    case _SC_UCHAR_MAX:      return UCHAR_MAX;    case _SC_UINT_MAX:      return UINT_MAX;    case _SC_ULONG_MAX:      return ULONG_MAX;    case _SC_USHRT_MAX:      return USHRT_MAX;    case _SC_NL_ARGMAX:#ifdef	NL_ARGMAX      return NL_ARGMAX;#else      return -1;#endif    case _SC_NL_LANGMAX:#ifdef	NL_LANGMAX      return NL_LANGMAX;#else      return -1;#endif    case _SC_NL_MSGMAX:#ifdef	NL_MSGMAX      return NL_MSGMAX;#else      return -1;#endif    case _SC_NL_NMAX:#ifdef	NL_NMAX      return NL_NMAX;#else      return -1;#endif    case _SC_NL_SETMAX:#ifdef	NL_SETMAX      return NL_SETMAX;#else      return -1;#endif    case _SC_NL_TEXTMAX:#ifdef	NL_TEXTMAX      return NL_TEXTMAX;#else      return -1;#endif    }}