1WCSSTR(3)                  Linux Programmer's Manual                 WCSSTR(3)
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NAME

6       wcsstr - locate a substring in a wide-character string
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SYNOPSIS

9       #include <wchar.h>
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11       wchar_t *wcsstr(const wchar_t *haystack, const wchar_t *needle);
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DESCRIPTION

14       The wcsstr() function is the wide-character equivalent of the strstr(3)
15       function.  It searches for the first occurrence of  the  wide-character
16       string  needle (without its terminating null wide character (L'\0')) as
17       a substring in the wide-character string haystack.
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RETURN VALUE

20       The wcsstr() function returns a pointer to the first occurrence of nee‐
21       dle  in  haystack.   It returns NULL if needle does not occur as a sub‐
22       string in haystack.
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24       Note the special case: If needle is the  empty  wide-character  string,
25       the return value is always haystack itself.
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ATTRIBUTES

28       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
29       tributes(7).
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31       ┌────────────────────────────────────────────┬───────────────┬─────────┐
32       │Interface                                   │ Attribute     │ Value   │
33       ├────────────────────────────────────────────┼───────────────┼─────────┤
34       │wcsstr()                                    │ Thread safety │ MT-Safe │
35       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

38       POSIX.1-2001, POSIX.1-2008, C99.
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SEE ALSO

41       strstr(3), wcschr(3)
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COLOPHON

44       This page is part of release 5.13 of the Linux  man-pages  project.   A
45       description  of  the project, information about reporting bugs, and the
46       latest    version    of    this    page,    can     be     found     at
47       https://www.kernel.org/doc/man-pages/.
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51GNU                               2021-03-22                         WCSSTR(3)
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