fpurge(3bsd)

fpurge3bsd

Flush a stream

Usage

#include <stdio.h>

(See libbsd(7) for include usage.)

int

fpurge(FILE *stream);

Library

library “libbsd”

Overview

The function fpurge() erases any input or output buffered in 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).

Return values

Upon successful completion 0 is returned. Otherwise, EOF is returned and the global variable errno is set to indicate the error.

Errors

[EBADF]

stream is not an open stream.

Releases

5 releases since Debian 10 (Buster); the text changed 2 times.

  1. 10
  2. 11
  3. 12–Arch

History

The fpurge() function first appeared in 4.4BSD-Lite.

From libbsd 0.12.2-2 in Arch Linux 2026-11-01. Parsed by carta from the page's mdoc source.