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wcscspn(3)

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

NAME
       wcscspn - search a wide-character string for any of a set of wide char‐
       acters

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 strc‐
       spn(3) function.  It determines the length of the longest initial  seg‐
       ment  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-charac‐
       ter 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-charac‐
       ters 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  attrib‐
       utes(7).   allbox;  lb lb lb l l l.  Interface Attribute Value T{ wcsc‐
       spn() T}   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 5.02 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/.

GNU                               2015-08-08                        WCSCSPN(3)
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