IRIX Base Documentation 2002 November/SGI IRIX Base Documentation 2002 November.iso/usr/share/catman/p_man/cat3s/wcstring.z/wcstring

Text File | 2002-10-03 | 25.7 KB | 254 lines

wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))                                                      wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))



NNNNAAAAMMMMEEEE
     _wwww_cccc_ssss_tttt_rrrr_iiii_nnnn_gggg_:::: _wwww_cccc_ssss_cccc_aaaa_tttt_,,,, _wwww_ssss_cccc_aaaa_tttt_,,,, _wwww_cccc_ssss_nnnn_cccc_aaaa_tttt_,,,, _wwww_ssss_nnnn_cccc_aaaa_tttt_,,,, _wwww_cccc_ssss_cccc_mmmm_pppp_,,,, _wwww_ssss_cccc_mmmm_pppp_,,,, _wwww_cccc_ssss_nnnn_cccc_mmmm_pppp_,,,, _wwww_ssss_nnnn_cccc_mmmm_pppp_,,,,
     _wwww_cccc_ssss_cccc_oooo_llll_llll_,,,, _wwww_cccc_ssss_cccc_pppp_yyyy_,,,, _wwww_ssss_cccc_pppp_yyyy_,,,, _wwww_cccc_ssss_nnnn_cccc_pppp_yyyy_,,,, _wwww_ssss_nnnn_cccc_pppp_yyyy_,,,, _wwww_cccc_ssss_llll_eeee_nnnn_,,,, _wwww_ssss_llll_eeee_nnnn_,,,, _wwww_cccc_ssss_cccc_hhhh_rrrr_,,,, _wwww_ssss_cccc_hhhh_rrrr_,,,,
     _wwww_cccc_ssss_rrrr_cccc_hhhh_rrrr_,,,, _wwww_ssss_rrrr_cccc_hhhh_rrrr_,,,, _wwww_cccc_ssss_pppp_bbbb_rrrr_kkkk_,,,, _wwww_ssss_pppp_bbbb_rrrr_kkkk_,,,, _wwww_cccc_ssss_ssss_pppp_nnnn_,,,, _wwww_ssss_ssss_pppp_nnnn_,,,, _wwww_ssss_cccc_ssss_pppp_nnnn_,,,, _wwww_cccc_ssss_tttt_oooo_kkkk_,,,, _wwww_ssss_tttt_oooo_ssss_tttt_rrrr_,,,,
     _wwww_cccc_ssss_wwww_cccc_ssss_,,,, _wwww_cccc_ssss_wwww_iiii_dddd_tttt_hhhh_,,,, _wwww_cccc_wwww_iiii_dddd_tttt_hhhh  -  _wwww_cccc_hhhh_aaaa_rrrr______tttt string operations and type
     transformation

SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
     _####_iiii_nnnn_cccc_llll_uuuu_dddd_eeee _<<<<_wwww_cccc_hhhh_aaaa_rrrr_...._hhhh_>>>>
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_cccc_aaaa_tttt_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_ssss_cccc_aaaa_tttt_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_nnnn_cccc_aaaa_tttt_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_,,,, _ssss_iiii_zzzz_eeee______tttt _n_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_ssss_nnnn_cccc_aaaa_tttt_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_,,,, _iiii_nnnn_tttt _n_))))_;;;;
     _iiii_nnnn_tttt _wwww_cccc_ssss_cccc_mmmm_pppp_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _iiii_nnnn_tttt _wwww_ssss_cccc_mmmm_pppp_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _iiii_nnnn_tttt _wwww_cccc_ssss_nnnn_cccc_mmmm_pppp_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_,,,, _ssss_iiii_zzzz_eeee______tttt _n_))))_;;;;
     _iiii_nnnn_tttt _wwww_ssss_nnnn_cccc_mmmm_pppp_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_,,,, _iiii_nnnn_tttt _n_))))_;;;;
     _iiii_nnnn_tttt _wwww_cccc_ssss_cccc_oooo_llll_llll_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;

     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_cccc_pppp_yyyy_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_ssss_cccc_pppp_yyyy_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_nnnn_cccc_pppp_yyyy_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_,,,, _ssss_iiii_zzzz_eeee______tttt _n_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_ssss_nnnn_cccc_pppp_yyyy_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_,,,, _iiii_nnnn_tttt _n_))))_;;;;
     _ssss_iiii_zzzz_eeee______tttt _wwww_cccc_ssss_llll_eeee_nnnn_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_))))_;;;;
     _iiii_nnnn_tttt _wwww_ssss_llll_eeee_nnnn_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_cccc_hhhh_rrrr_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _c_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_ssss_cccc_hhhh_rrrr_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_,,,, _iiii_nnnn_tttt _c_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_rrrr_cccc_hhhh_rrrr_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_,,,, _iiii_nnnn_tttt _c_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_ssss_rrrr_cccc_hhhh_rrrr_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_,,,, _iiii_nnnn_tttt _c_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_pppp_bbbb_rrrr_kkkk_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_ssss_pppp_bbbb_rrrr_kkkk_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _iiii_nnnn_tttt _wwww_cccc_ssss_ssss_pppp_nnnn_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _iiii_nnnn_tttt _wwww_ssss_ssss_pppp_nnnn_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;
     _iiii_nnnn_tttt _wwww_ssss_cccc_ssss_pppp_nnnn_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;

     XPG4
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_tttt_oooo_kkkk_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;

     XPG5
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_tttt_oooo_kkkk_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_****_p_t_r_))))_;;;;

     _cccc_hhhh_aaaa_rrrr _****_wwww_ssss_tttt_oooo_ssss_tttt_rrrr_((((_cccc_hhhh_aaaa_rrrr _****_s_1_,,,, _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;


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wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))                                                      wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))



     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_wwww_cccc_ssss_wwww_cccc_ssss_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_1_,,,, _cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_2_))))_;;;;

     _iiii_nnnn_tttt _wwww_cccc_ssss_wwww_iiii_dddd_tttt_hhhh_((((_cccc_oooo_nnnn_ssss_tttt _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_s_,,,, _ssss_iiii_zzzz_eeee______tttt _n_))))_;;;;
     _iiii_nnnn_tttt _wwww_cccc_wwww_iiii_dddd_tttt_hhhh_((((_wwww_cccc_hhhh_aaaa_rrrr______tttt _w_c_))))_;;;;

DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN ((((IIIInnnntttteeeerrrrnnnnaaaattttiiiioooonnnnaaaallll FFFFuuuunnnnccccttttiiiioooonnnnssss))))
     The arguments _s_1, _s_2, and _s point to _wwww_cccc_hhhh_aaaa_rrrr______tttt strings (that is, arrays of
     _wwww_cccc_hhhh_aaaa_rrrr______tttt characters terminated by a _wwww_cccc_hhhh_aaaa_rrrr______tttt null character).  The
     functions _wwww_cccc_ssss_cccc_aaaa_tttt, _wwww_ssss_cccc_aaaa_tttt, _wwww_cccc_ssss_nnnn_cccc_aaaa_tttt, _wwww_ssss_nnnn_cccc_aaaa_tttt, _wwww_cccc_ssss_cccc_pppp_yyyy, _wwww_ssss_cccc_pppp_yyyy, _wwww_cccc_ssss_nnnn_cccc_pppp_yyyy and
     _wwww_ssss_nnnn_cccc_pppp_yyyy all modify _s_1.  These functions do not check for an overflow
     condition of the array pointed to by _s_1.

     _wwww_cccc_ssss_cccc_aaaa_tttt and _wwww_ssss_cccc_aaaa_tttt append a copy of the _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_2 to the end of the
     _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_1.  _wwww_cccc_ssss_nnnn_cccc_aaaa_tttt and _wwww_ssss_nnnn_cccc_aaaa_tttt append at most _n _wwww_cccc_hhhh_aaaa_rrrr______tttt
     characters.  Each function returns _s_1.

     _wwww_cccc_ssss_cccc_mmmm_pppp and _wwww_ssss_cccc_mmmm_pppp compare its arguments and returns an integer less than,
     equal to, or greater than _0000, depending on whether _s_1 is less than, equal
     to, or greater than _s_2.  _wwww_cccc_ssss_nnnn_cccc_mmmm_pppp and _wwww_ssss_nnnn_cccc_mmmm_pppp make the same comparison but
     look at most at _n _wwww_cccc_hhhh_aaaa_rrrr______tttt characters.

     _wwww_cccc_ssss_cccc_pppp_yyyy and _wwww_ssss_cccc_pppp_yyyy copy _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_2 to _s_1, stopping after the _wwww_cccc_hhhh_aaaa_rrrr______tttt
     null character has been copied.  _wwww_cccc_ssss_nnnn_cccc_pppp_yyyy and _wwww_ssss_nnnn_cccc_pppp_yyyy copy exactly _n
     _wwww_cccc_hhhh_aaaa_rrrr______tttt characters, truncating _s_2 or adding _wwww_cccc_hhhh_aaaa_rrrr______tttt null characters to
     _s_1, if necessary.  The result will not be _wwww_cccc_hhhh_aaaa_rrrr______tttt null-terminated if the
     length of _s_2 is _n or more.  Each function returns _s_1.

     _wwww_cccc_ssss_llll_eeee_nnnn and _wwww_ssss_llll_eeee_nnnn return the number of _wwww_cccc_hhhh_aaaa_rrrr______tttt characters in _s, not
     including the terminating _wwww_cccc_hhhh_aaaa_rrrr______tttt null character.

     _wwww_cccc_ssss_cccc_hhhh_rrrr, _wwww_ssss_cccc_hhhh_rrrr, _wwww_cccc_ssss_rrrr_cccc_hhhh_rrrr and _wwww_ssss_rrrr_cccc_hhhh_rrrr return a pointer to the first and last
     occurrence, respectively, of _wwww_cccc_hhhh_aaaa_rrrr______tttt character _c in _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s, or
     a null pointer, if _c does not occur in the string.  The _wwww_cccc_hhhh_aaaa_rrrr______tttt null
     character terminating a string is considered to be part of the string.

     _wwww_cccc_ssss_pppp_bbbb_rrrr_kkkk and _wwww_ssss_pppp_bbbb_rrrr_kkkk return a pointer to the first occurrence in _wwww_cccc_hhhh_aaaa_rrrr______tttt
     string _s_1 of any _wwww_cccc_hhhh_aaaa_rrrr______tttt character from _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_2, or a null
     pointer if there is no _wwww_cccc_hhhh_aaaa_rrrr______tttt character from _s_2 in _s_1.

     _wwww_cccc_ssss_ssss_pppp_nnnn and _wwww_ssss_ssss_pppp_nnnn return the length of the initial segment of _wwww_cccc_hhhh_aaaa_rrrr______tttt
     string _s_1, which consists entirely of _wwww_cccc_hhhh_aaaa_rrrr______tttt characters from _wwww_cccc_hhhh_aaaa_rrrr______tttt
     string _s_2.  _wwww_ssss_cccc_ssss_pppp_nnnn returns the length of the initial segment of _wwww_cccc_hhhh_aaaa_rrrr______tttt
     string _s_1, which does not consist entirely of _wwww_cccc_hhhh_aaaa_rrrr______tttt characters from
     _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_2.

     _wwww_cccc_ssss_tttt_oooo_kkkk treats the _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_1 as a sequence of zero or more text
     tokens, separated by spans of one or more _wwww_cccc_hhhh_aaaa_rrrr______tttt characters from the
     separator _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_2.  The first call (with the pointer _s_1
     specified) returns a pointer to the first _wwww_cccc_hhhh_aaaa_rrrr______tttt character of the first
     token, and writes a _wwww_cccc_hhhh_aaaa_rrrr______tttt null character into _s_1 immediately following
     the returned token.  The function keeps track of its position in the
     _wwww_cccc_hhhh_aaaa_rrrr______tttt string between separate calls, so that subsequent calls (which



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wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))                                                      wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))



     must be made with the first argument a null pointer) will progress
     through the _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_1 immediately following that token.
     Similarly, subsequent calls will progress through the _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_1
     until no tokens remain.  The _wwww_cccc_hhhh_aaaa_rrrr______tttt separator string _s_2 may be different
     from call to call.  A null pointer is returned when no token remains in
     _s_1.  For XPG5 type _wwww_cccc_ssss_tttt_oooo_kkkk function, there is an additional argument _pppp_tttt_rrrr
     which points to a _wwww_cccc_hhhh_aaaa_rrrr______tttt pointer into which the function stores
     information necessary for it to continue processing the same wide
     character string.

     _wwww_ssss_tttt_oooo_ssss_tttt_rrrr transforms _wwww_cccc_hhhh_aaaa_rrrr______tttt characters in _wwww_cccc_hhhh_aaaa_rrrr______tttt string _s_2 into EUC, and
     transfers them to character string _s_1, stopping after the _wwww_cccc_hhhh_aaaa_rrrr______tttt null
     character has been processed.

     _wwww_cccc_ssss_cccc_oooo_llll_llll compares the wide character string pointed to by _s_1 to the wide
     character string pointed to by _s_2, both interpreted as appropriate to the
     LC_COLLATE category of the current locale.  Upon successful completion,
     _wwww_cccc_ssss_cccc_oooo_llll_llll returns an integer greater than, equal to or less than zero,
     according to whether the wide character string pointed to by _s_1 is
     greater than, equal to or less than the wide character string pointed to
     by _s_2, when both are interpreted as appropriate to the current locale.
     On error, _wwww_cccc_ssss_cccc_oooo_llll_llll may set _e_r_r_n_o, but no return value is reserved to
     indicate an error.  If _e_r_r_n_o is set to EINVAL, then the _s_1 or _s_2
     arguments contain wide character codes outside the domain of the
     collating sequence.

     _wwww_cccc_ssss_wwww_cccc_ssss locates the first occurrence in the wide character string pointed
     to by _s_1 of the sequence of wide-character codes (excluding the
     terminating null wide-character code) in the wide character string
     pointed to by _s_2.  Upon successful completion, _wwww_cccc_ssss_wwww_cccc_ssss returns a pointer
     to the located wide character string or a null pointer if the wide
     character string is not found.  If _s_2 points to a wide character string
     with zero length, the function returns _s_1.

     _wwww_cccc_ssss_wwww_iiii_dddd_tttt_hhhh determines the number of column positions required for _n wide-
     character codes (or fewer than _n wide-character codes if a null wide-
     character code is encountered before _n wide-character codes are
     exhausted) in the string pointed to by _s.  _wwww_cccc_ssss_wwww_iiii_dddd_tttt_hhhh either returns _0 (if
     _s points to a null wide-character code), or returns the number of column
     positions to be occupied by the wide character string pointed to by _s, or
     returns -_1 (if any of the first _n wide-character codes in the wide
     character string pointed to by _s is not a printing wide-character code).

     _wwww_cccc_wwww_iiii_dddd_tttt_hhhh determines the number of column positions required for the wide
     character _w_c.  The value of _w_c must be a character representable as a
     _wwww_cccc_hhhh_aaaa_rrrr______tttt, and must be a wide-character code corresponding to a valid
     character in the current locale.  _wwww_cccc_wwww_iiii_dddd_tttt_hhhh either returns _0 (if _w_c is a
     null wide-character code), or returns the number of column positions to
     be occupied by the wide-character code _w_c, or returns -_1 (if _w_c does not
     correspond to a prinable wide-character code).





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wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))                                                      wwwwccccssssttttrrrriiiinnnngggg((((3333SSSS))))



SSSSEEEEEEEE AAAALLLLSSSSOOOO
     _mmmm_aaaa_llll_llll_oooo_cccc(3C), _wwww_iiii_dddd_eeee_cccc(3S), _mmmm_aaaa_llll_llll_oooo_cccc(3X).

DDDDIIIIAAAAGGGGNNNNOOOOSSSSTTTTIIIICCCCSSSS
     On success, _wwww_ssss_tttt_oooo_ssss_tttt_rrrr returns _s_1.  If an illegal byte sequence is detected,
     a null pointer is returned and _eeee_rrrr_rrrr_nnnn_oooo is set to _EEEE_IIII_LLLL_SSSS_EEEE_QQQQ.

NNNNOOOOTTTTEEEESSSS
     There are two types of _wwww_cccc_ssss_tttt_oooo_kkkk functions in n32 and 64 bit C libraries for
     IRIX 6.5.17 or later versions. One is XPG4 type which has been in C
     library, and another is XPG5 type function. The difference is an
     additonal third argument type in XPG5 type of the function, which is
     _wwww_cccc_hhhh_aaaa_rrrr______tttt _****_****_pppp_tttt_rrrr. Old programs calling _wwww_cccc_ssss_tttt_oooo_kkkk function have XPG4 behavior of
     the function for backward compatibility. When XPG5 behavior is required,
     new programs must be compiled with the wchar.h header file. When XPG4
     behavior is required, new programs must be compiled with the wchar.h
     header file and setting _XOPEN_SOURCE to 400.






































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