Unix/Linux Go Back    

Linux 2.6 - man page for mbtowc (linux section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)

MBTOWC(3)			    Linux Programmer's Manual				MBTOWC(3)

       mbtowc - convert a multibyte sequence to a wide character

       #include <stdlib.h>

       int mbtowc(wchar_t *pwc, const char *s, size_t n);

       The  main case for this function is when s is not NULL and pwc is not NULL.  In this case,
       the mbtowc() function inspects at most n bytes of the  multibyte  string  starting  at  s,
       extracts the next complete multibyte character, converts it to a wide character and stores
       it at *pwc.  It updates an internal shift state known only to the mbtowc() function.  If s
       does  not  point  to a null byte ('\0'), it returns the number of bytes that were consumed
       from s, otherwise it returns 0.

       If the n bytes starting at s do not contain a complete multibyte  character,  or  if  they
       contain	an invalid multibyte sequence, mbtowc() returns -1.  This can happen even if n >=
       MB_CUR_MAX, if the multibyte string contains redundant shift sequences.

       A different case is when s is not NULL but pwc is NULL.	In this case the  mbtowc()  func-
       tion  behaves as above, except that it does not store the converted wide character in mem-

       A third case is when s is NULL.	In this case, pwc and n are ignored.  The mbtowc()  func-
       tion  resets  the  shift  state,  only  known  to this function, to the initial state, and
       returns nonzero if the encoding has nontrivial shift state, or zero  if	the  encoding  is

       If  s  is not NULL, the mbtowc() function returns the number of consumed bytes starting at
       s, or 0 if s points to a null byte, or -1 upon failure.

       If s is NULL, the mbtowc() function returns nonzero if the encoding has	nontrivial  shift
       state, or zero if the encoding is stateless.


       The behavior of mbtowc() depends on the LC_CTYPE category of the current locale.

       This  function  is not multithread safe.  The function mbrtowc(3) provides a better inter-
       face to the same functionality.

       MB_CUR_MAX(3), mbrtowc(3), mbstowcs(3)

       This page is part of release 3.55 of the Linux man-pages project.  A  description  of  the
       project,     and    information	  about    reporting	bugs,	 can	be    found    at

GNU					    2011-09-28					MBTOWC(3)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 12:09 PM.