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April, 26th. 2006:
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fpurge
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
fpurge, __fpurge - purge a stream
LIBRARY
Standard C library
( libc,~ -lc)
SYNOPSIS
/* unsupported */
#include <stdio.h>
int fpurge(FILE *stream);
/* supported */
#include <stdio.h>
#include <stdio_ext.h>
void __fpurge(FILE *stream);
DESCRIPTION
The function
fpurge()
clears the buffers of the given stream.
For output streams this discards any unwritten output.
For input streams this discards any input read from the underlying object
but not yet obtained via
getc(3);
this includes any text pushed back via
ungetc(3).
See also
fflush(3).
The function
__fpurge()
does precisely the same, but without returning a value.
RETURN VALUE
Upon successful completion
fpurge()
returns 0.
On error, it returns -1 and sets
errno
to indicate the error.
ERRORS
- EBADF
-
stream
is not an open stream.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
__fpurge()
| Thread safety | M-Safe race:stream
|
STANDARDS
None.
HISTORY
- fpurge()
-
4.4BSD.
Not available under Linux.
- __fpurge()
-
Solaris, glibc 2.1.95.
NOTES
Usually it is a mistake to want to discard input buffers.
SEE ALSO
fflush(3),
setbuf(3),
stdio_ext(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- NOTES
-
- SEE ALSO
-
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