Section: POSIX Programmer's Manual (3P)
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.
--- get a wide-character string from a stream
wchar_t *fgetws(wchar_t *restrict ws, int n,
FILE *restrict stream);
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.1-2008 defers to the ISO C standard.
function shall read characters from the
convert these to the corresponding wide-character codes, place them
array pointed to by
characters are read, or a
is read, converted, and transferred to
or an end-of-file condition is encountered. The wide-character string,
shall then be terminated with a null wide-character code.
If an error occurs, the resulting value of the file position indicator
for the stream is unspecified.
function may mark the last data access timestamp of the file
for update. The last data access timestamp shall be marked for update
by the first successful execution of
that returns data not supplied by a prior call to
Upon successful completion,
If the end-of-file indicator for the stream is set, or if the stream
is at end-of-file, the end-of-file indicator for the
stream shall be set and
shall return a null pointer. If a read error occurs, the error
indicator for the stream shall be set,
shall return a null pointer,
and shall set
to indicate the error.
The following sections are informative.
, Standard I/O Streams,
The Base Definitions volume of POSIX.1-2008,
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group.
(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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
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