1GETWC(3P)                  POSIX Programmer's Manual                 GETWC(3P)
2
3
4

PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
10
11

NAME

13       getwc — get a wide character from a stream
14

SYNOPSIS

16       #include <stdio.h>
17       #include <wchar.h>
18
19       wint_t getwc(FILE *stream);
20

DESCRIPTION

22       The functionality described on this reference page is aligned with  the
23       ISO C  standard.  Any  conflict between the requirements described here
24       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2008
25       defers to the ISO C standard.
26
27       The getwc() function shall be equivalent to fgetwc(), except that if it
28       is implemented as a macro it may evaluate stream more than once, so the
29       argument should never be an expression with side-effects.
30

RETURN VALUE

32       Refer to fgetwc().
33

ERRORS

35       Refer to fgetwc().
36
37       The following sections are informative.
38

EXAMPLES

40       None.
41

APPLICATION USAGE

43       Since it may be implemented as a macro, getwc() may treat incorrectly a
44       stream argument with side-effects. In particular, getwc(*f++) does  not
45       necessarily  work  as expected.  Therefore, use of this function is not
46       recommended; fgetwc() should be used instead.
47

RATIONALE

49       None.
50

FUTURE DIRECTIONS

52       None.
53

SEE ALSO

55       Section 2.5, Standard I/O Streams, fgetwc()
56
57       The Base Definitions volume of POSIX.1‐2008, <stdio.h>, <wchar.h>
58

60       Portions of this text are reprinted and reproduced in  electronic  form
61       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
62       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
63       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
64       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
65       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
66       event of any discrepancy between this version and the original IEEE and
67       The  Open Group Standard, the original IEEE and The Open Group Standard
68       is the referee document. The original Standard can be  obtained  online
69       at http://www.unix.org/online.html .
70
71       Any  typographical  or  formatting  errors that appear in this page are
72       most likely to have been introduced during the conversion of the source
73       files  to  man page format. To report such errors, see https://www.ker‐
74       nel.org/doc/man-pages/reporting_bugs.html .
75
76
77
78IEEE/The Open Group                  2013                            GETWC(3P)
Impressum