System interfaces compatible with Solaris or SunOS functions:

    __fbufsize
    __flbf
    __fpending
    __fpurge
    __freadable
    __freading
    __fsetlocking
    __fwritable
    __fwriting
    acl
    aclcheck
    aclfrommode
    aclfrompbits
    aclfromtext
    aclsort
    acltomode
    acltopbits
    acltotext
    endmntent
    facl
    fegetprec
    fesetprec
    futimesat
    getmntent
    memalign
    setmntent
    sig2str
    str2sig
    xdr_array			(available in external "libtirpc" library)
    xdr_bool			(available in external "libtirpc" library)
    xdr_bytes			(available in external "libtirpc" library)
    xdr_char			(available in external "libtirpc" library)
    xdr_double			(available in external "libtirpc" library)
    xdr_enum			(available in external "libtirpc" library)
    xdr_float			(available in external "libtirpc" library)
    xdr_free			(available in external "libtirpc" library)
    xdr_hyper			(available in external "libtirpc" library)
    xdr_int			(available in external "libtirpc" library)
    xdr_int16_t			(available in external "libtirpc" library)
    xdr_int32_t			(available in external "libtirpc" library)
    xdr_int64_t			(available in external "libtirpc" library)
    xdr_int8_t			(available in external "libtirpc" library)
    xdr_long			(available in external "libtirpc" library)
    xdr_longlong_t		(available in external "libtirpc" library)
    xdr_netobj			(available in external "libtirpc" library)
    xdr_opaque			(available in external "libtirpc" library)
    xdr_pointer			(available in external "libtirpc" library)
    xdr_reference		(available in external "libtirpc" library)
    xdr_short			(available in external "libtirpc" library)
    xdr_sizeof			(available in external "libtirpc" library)
    xdr_string			(available in external "libtirpc" library)
    xdr_u_char			(available in external "libtirpc" library)
    xdr_u_hyper			(available in external "libtirpc" library)
    xdr_u_int			(available in external "libtirpc" library)
    xdr_u_int16_t		(available in external "libtirpc" library)
    xdr_u_int32_t		(available in external "libtirpc" library)
    xdr_u_int64_t		(available in external "libtirpc" library)
    xdr_u_int8_t		(available in external "libtirpc" library)
    xdr_u_long			(available in external "libtirpc" library)
    xdr_u_longlong_t		(available in external "libtirpc" library)
    xdr_u_short			(available in external "libtirpc" library)
    xdr_uint16_t		(available in external "libtirpc" library)
    xdr_uint32_t		(available in external "libtirpc" library)
    xdr_uint64_t		(available in external "libtirpc" library)
    xdr_uint8_t			(available in external "libtirpc" library)
    xdr_union			(available in external "libtirpc" library)
    xdr_vector			(available in external "libtirpc" library)
    xdr_void			(available in external "libtirpc" library)
    xdr_wrapstring		(available in external "libtirpc" library)
    xdrmem_create		(available in external "libtirpc" library)
    xdrrec_create		(available in external "libtirpc" library)
    xdrrec_endofrecord		(available in external "libtirpc" library)
    xdrrec_eof			(available in external "libtirpc" library)
    xdrrec_skiprecord		(available in external "libtirpc" library)
    __xdrrec_getrec		(available in external "libtirpc" library)
    __xdrrec_setnonblock	(available in external "libtirpc" library)
    xdrstdio_create		(available in external "libtirpc" library)

System interfaces not in POSIX but compatible with ISO C requirements:

    aligned_alloc		(ISO C11)
    at_quick_exit		(ISO C11)
    c16rtomb			(ISO C11)
    c32rtomb			(ISO C11)
    c8rtomb			(ISO C23)
    call_once			(ISO C11)
    cnd_broadcast		(ISO C11)
    cnd_destroy			(ISO C11)
    cnd_init			(ISO C11)
    cnd_signal			(ISO C11)
    cnd_timedwait		(ISO C11)
    cnd_wait			(ISO C11)
    mbrtoc16			(ISO C11)
    mbrtoc32			(ISO C11)
    mbrtoc8			(ISO C23)
    mtx_destroy			(ISO C11)
    mtx_init			(ISO C11)
    mtx_lock			(ISO C11)
    mtx_timedlock		(ISO C11)
    mtx_trylock			(ISO C11)
    mtx_unlock			(ISO C11)
    quick_exit			(ISO C11)
    thrd_create			(ISO C11)
    thrd_current		(ISO C11)
    thrd_detach			(ISO C11)
    thrd_equal			(ISO C11)
    thrd_exit			(ISO C11)
    thrd_join			(ISO C11)
    thrd_sleep			(ISO C11)
    thrd_yield			(ISO C11)
    tss_create			(ISO C11)
    tss_delete			(ISO C11)
    tss_get			(ISO C11)
    tss_set			(ISO C11)