WCSSTR(3) Linux Programmer's Manual WCSSTR(3)
NAME
wcsstr - locate a substring in a wide-character string
SYNOPSIS
#include <wchar.h>
wchar_t *wcsstr(const wchar_t *haystack, const wchar_t *needle);
DESCRIPTION
The wcsstr() function is the wide-character equivalent of the strstr(3)
function. It searches for the first occurrence of the wide-character
string needle (without its terminating null wide character (L'\0')) as
a substring in the wide-character string haystack.
RETURN VALUE
The wcsstr() function returns a pointer to the first occurrence of nee-
dle in haystack. It returns NULL if needle does not occur as a sub-
string in haystack.
Note the special case: If needle is the empty wide-character string,
the return value is always haystack itself.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
+----------+---------------+---------+
|Interface | Attribute | Value |
+----------+---------------+---------+
|wcsstr() | Thread safety | MT-Safe |
+----------+---------------+---------+
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C99.
SEE ALSO
strstr(3), wcschr(3)
COLOPHON
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GNU 2019-03-06 WCSSTR(3)