Open System Services Library Calls Reference Manual (G06.28+, H06.05+)

OSS Library Calls (e - f) fprintf(3)
ERRORS
The fprintf() function fails if stream is unbuffered, or if stream’s buffer needed to be flushed and
the function call caused an underlying write( ) or lseek() function to be invoked. In addition, if
the fprintf( ) function fails, errno is set to one of the following values:
[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 writ-
ing.
[EFBIG] An attempt was made to write at or beyond the file offset maximum. |
[EILSEQ] An invalid wide character was detected.
[EINTR] The operation was interrupted by a signal that was caught, and no data was
transferred.
[EINVAL] There are insufficient arguments.
[EIO] The implementation supports job control; the process is a member of a back-
ground 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. This error might also be returned under
implementation-defined conditions.
[ENOMEM] Insufficient storage space was available.
[ENOSPC] There was no free space remaining on the device containing the file.
[ENXIO] A request was made of a nonexistent device, or the request was outside the capa-
bilities of the device.
[EPIPE] An attempt was 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.
RELATED INFORMATION
Functions: fp_class(3), isnan(3), toascii(3), printf(3), putc(3), scanf(3), sprintf(3).
STANDARDS CONFORMANCE
The POSIX standards leave some features to the implementing vendor to define. The following
features are affected in the HP implementation:
• The output of %p conversion in the fprintf() function is a pointer to a pointer to void.
The following are HP extensions to the XPG4 Version 2 specification:
• The conversion specifier L followed by a d, i, n, o,orx indicates that the argument will
be treated as a long long, which is a 64-bit integer data type.
• The conversion specifier ll followed by a d, i, n, o,orx indicates that the argument will
be treated as an unsigned long long, which is a 64-bit integer data type.
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