fputwc(3S)
NAME
fputwc − put wide-character code on a stream
SYNOPSIS
#include <stdio.h>
#include <wchar.h>
wint_t fputwc(wint_t wc, FILE ∗stream);
DESCRIPTION
The fputwc() function writes the character corresponding to the wide-character code wc to the output stream pointed to by stream, at the position indicated by the associated file-position indicator for the stream (if defined), and advances the indicator appropriately. If the file cannot support positioning requests, or if the stream was opened with append mode, the character is appended to the output stream. If an error occurs while writing the character, the shift state of the output file is left in an undefined state.
The st_ctime and st_mtime fields of the file will be marked for update between the successful execution of fputwc() and the next successful completion of a call to fflush(3S) or fclose(3S) on the same stream or a call to exit(2) or abort(3C).
RETURN VALUES
Upon successful completion, fputwc() returns wc. Otherwise, it returns WEOF, the error indicator for the stream is set, and errno is set to indicate the error.
ERRORS
The fputwc() function will fail if either the stream is unbuffered or data in the stream’s buffer needs to be written, and:
EAGAIN The O_NONBLOCK flag is set for the file descriptor underlying stream and the process would be delayed in the write operation.
EBADF The file descriptor underlying stream is not a valid file descriptor open for writing.
EFBIG An attempt was made to write to a file that exceeds the maximum file size or the process’ file size limit.
EFBIG The file is a regular file and an attempt was made to write at or beyond the offset maximum associated with the corresponding stream.
EINTR The write operation was terminated due to the receipt of a signal, and no data was transferred.
EIO A physical I/O error has occurred, or the process is a member of a background process group attempting to write to its controlling terminal, TOSTOP is set, the process is neither ignoring nor blocking SIGTTOU and the process group of the process is orphaned.
ENOSPC There was no free space remaining on the device containing the file.
EPIPE An attempt is made to write to a pipe or FIFO that is not open for reading by any process. A SIGPIPE signal will also be sent to the process.
The fputwc() function may fail if:
ENOMEM Insufficient storage space is available.
ENXIO A request was made of a non-existent device, or the request was outside the capabilities of the device.
EILSEQ The wide-character code wc does not correspond to a valid character.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| MT-Level | MT-Safe |
SEE ALSO
exit(2), ulimit(2), abort(3C), fclose(3S), ferror(3S), fflush(3S), fopen(3S), setbuf(3S), attributes(5)
SunOS 5.6 — Last change: 22 Apr 1997