Write a wide character to a stdout
Synopsis:
#include <wchar.h>
wint_t putwchar( wchar_t wc );
Arguments:
- wc
- The wide character that you want to write.
Library:
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
Description:
The putwchar() function writes the wide character wc, cast as (wint_t)(wchar_t), to the stdout stream. It's equivalent to:
fputwc( wc, stdout );
Returns:
The wide character written, cast as (wint_t)(wchar_t), or WEOF if an error occurred
(errno is set).
Note:
If wc exceeds the valid wide-character range, the value returned
is the wide character written, not wc.
Errors:
- EAGAIN
- The O_NONBLOCK flag is set for fp,
and the thread would have been blocked by this operation.
- EBADF
- The file descriptor for fp isn't valid for writing.
- EFBIG
- The file exceeds the maximum file size,
or the function can't write at or beyond the offset maximum.
- EINTR
- A signal terminated the write operation; no data was transferred.
- EIO
- A physical I/O error has occurred or all of the following conditions were met:
- The process is in the background.
- TOSTOP is set.
- The process is blocking/ignoring SIGTTOU.
- The process group is orphaned.
- EPIPE
- An attempt was made to write to a pipe or FIFO that's closed;
a SIGPIPE signal is also sent to the thread.
Classification:
ANSI,
POSIX 1003.1
| Safety: |
|
|---|
| Cancellation point |
Yes |
| Interrupt handler |
No |
| Signal handler |
No |
| Thread |
Yes |