Open Source Software

wcscspn(3)



NAME

   wcscspn  -  search  a  wide-character  string  for any of a set of wide
   characters

SYNOPSIS

   #include <wchar.h>

   size_t wcscspn(const wchar_t *wcs, const wchar_t *reject);

DESCRIPTION

   The  wcscspn()  function  is  the  wide-character  equivalent  of   the
   strcspn(3)  function.   It determines the length of the longest initial
   segment of wcs which consists entirely of wide-characters not listed in
   reject.   In  other  words, it searches for the first occurrence in the
   wide-character string wcs  of  any  of  the  characters  in  the  wide-
   character string reject.

RETURN VALUE

   The  wcscspn()  function  returns  the number of wide characters in the
   longest initial  segment  of  wcs  which  consists  entirely  of  wide-
   characters  not  listed  in  reject.   In  other  words, it returns the
   position of the first occurrence in the wide-character  string  wcs  of
   any   of  the  characters  in  the  wide-character  string  reject,  or
   wcslen(wcs) if there is none.

ATTRIBUTES

   For  an  explanation  of  the  terms  used   in   this   section,   see
   attributes(7).

   
   Interface  Attribute      Value   
   
   wcscspn()  Thread safety  MT-Safe

CONFORMING TO

   POSIX.1-2001, POSIX.1-2008, C99.

SEE ALSO

   strcspn(3), wcspbrk(3), wcsspn(3)

COLOPHON

   This  page  is  part of release 4.09 of the Linux man-pages project.  A
   description of the project, information about reporting bugs,  and  the
   latest     version     of     this    page,    can    be    found    at
   https://www.kernel.org/doc/man-pages/.



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