unixdev.net


Switch to SpeakEasy.net DSL

The Modular Manual Browser

Home Page
Manual: (Debian-5.0)
Page:
Section:
Apropos / Subsearch:
optional field

FPURGE(3)                  Linux Programmer's Manual                 FPURGE(3)



NAME
       fpurge, __fpurge - purge a stream

SYNOPSIS
       /* unsupported */
       #include <&lt;stdio.h>&gt;

       int fpurge(FILE *stream);

       /* supported */
       #include <&lt;stdio.h>&gt;
       #include <&lt;stdio_ext.h>&gt;

       void  __fpurge(FILE *stream);

DESCRIPTION
       The function fpurge() clears the buffers of the given stream.  For out-
       put 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 appropriately.

ERRORS
       EBADF  stream is not an open stream.

CONFORMING TO
       These  functions  are  non-standard  and  not  portable.   The function
       fpurge() was introduced in 4.4BSD and is  not  available  under  Linux.
       The  function  __fpurge()  was introduced in Solaris, and is present in
       glibc 2.1.95 and later.

NOTES
       Usually it is a mistake to want to discard input buffers.

SEE ALSO
       fflush(3), setbuf(3), stdio_ext(3)

COLOPHON
       This page is part of release 3.05 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



                                  2001-12-15                         FPURGE(3)