1FPUTWC(3P) POSIX Programmer's Manual FPUTWC(3P)
2
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
12 fputwc - put a wide-character code on a stream
13
15 #include <stdio.h>
16 #include <wchar.h>
17 wint_t fputwc(wchar_t wc, FILE *stream);
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22 The fputwc() function shall write the character corresponding to the
23 wide-character code wc to the output stream pointed to by stream, at
24 the position indicated by the associated file-position indicator for
25 the stream (if defined), and advances the indicator appropriately. If
26 the file cannot support positioning requests, or if the stream was
27 opened with append mode, the character is appended to the output
28 stream. If an error occurs while writing the character, the shift state
29 of the output file is left in an undefined state.
30 The st_ctime and st_mtime fields of the file shall be marked for update
32 between the successful execution of fputwc() and the next successful
33 completion of a call to fflush() or fclose() on the same stream or a
34 call to exit() or abort().
35
37 Upon successful completion, fputwc() shall return wc. Otherwise, it
38 shall return WEOF, the error indicator for the stream shall be set,
39 and errno shall be set to indicate the error.
40
42 The fputwc() function shall fail if either the stream is unbuffered or
43 data in the stream's buffer needs to be written, and:
44 EAGAIN The O_NONBLOCK flag is set for the file descriptor underlying
46 stream and the process would be delayed in the write operation.
47 EBADF The file descriptor underlying stream is not a valid file
49 descriptor open for writing.
50 EFBIG An attempt was made to write to a file that exceeds the maximum
52 file size or the process' file size limit.
53 EFBIG The file is a regular file and an attempt was made to write at
55 or beyond the offset maximum associated with the corresponding
56 stream.
57 EILSEQ The wide-character code wc does not correspond to a valid char‐
59 acter.
60 EINTR The write operation was terminated due to the receipt of a sig‐
62 nal, and no data was transferred.
63 EIO A physical I/O error has occurred, or the process is a member of
65 a background process group attempting to write to its control‐
66 ling terminal, TOSTOP is set, the process is neither ignoring
67 nor blocking SIGTTOU, and the process group of the process is
68 orphaned. This error may also be returned under implementation-
69 defined conditions.
70 ENOSPC There was no free space remaining on the device containing the
72 file.
73 EPIPE An attempt is made to write to a pipe or FIFO that is not open
75 for reading by any process. A SIGPIPE signal shall also be sent
76 to the thread.
77 The fputwc() function may fail if:
80 ENOMEM Insufficient storage space is available.
82 ENXIO A request was made of a nonexistent device, or the request was
84 outside the capabilities of the device.
85 The following sections are informative.
88
90 None.
91
93 None.
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96 None.
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99 None.
100
102 ferror(), fopen(), setbuf(), ulimit(), the Base Definitions volume of
103 IEEE Std 1003.1-2001, <stdio.h>, <wchar.h>
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106 Portions of this text are reprinted and reproduced in electronic form
107 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
108 -- Portable Operating System Interface (POSIX), The Open Group Base
109 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
110 Electrical and Electronics Engineers, Inc and The Open Group. In the
111 event of any discrepancy between this version and the original IEEE and
112 The Open Group Standard, the original IEEE and The Open Group Standard
113 is the referee document. The original Standard can be obtained online
114 at http://www.opengroup.org/unix/online.html .
115IEEE/The Open Group 2003 FPUTWC(3P)