This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding Linux
manual page for details of Linux behavior), or the interface may not be
implemented on Linux.
wcsrchr — wide-character string scanning operation
wchar_t *wcsrchr(const wchar_t *ws, wchar_t wc);
The functionality described on this reference page is aligned with the
ISO C standard. Any conflict between the requirements described here
and the ISO C standard is unintentional. This volume of
POSIX.1‐2017 defers to the ISO C standard.
The wcsrchr() function shall locate the last occurrence of
wc in the wide-character string pointed to by ws. The
application shall ensure that the value of wc is a character
representable as a type wchar_t and a wide-character code
corresponding to a valid character in the current locale. The terminating
null wide-character code shall be considered to be part of the
Upon successful completion, wcsrchr() shall return a pointer to the
wide-character code or a null pointer if wc does not occur in the
No errors are defined.
The following sections are informative.
The Base Definitions volume of POSIX.1‐2017,
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1-2017, Standard for Information Technology -- Portable Operating
System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018
Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html .
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