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
  needle in haystack. It returns NULL if needle does not
  occur as a substring 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 attributes(7).
  
    | Interface | Attribute | Value | 
  
    | wcsstr () | Thread safety | MT-Safe | 
POSIX.1-2001, POSIX.1-2008, C99.
COLOPHON¶
This page is part of release 4.16 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/.