.\"
.\" This file and its contents are supplied under the terms of the
.\" Common Development and Distribution License ("CDDL"), version 1.0.
.\" You may only use this file in accordance with the terms of version
.\" 1.0 of the CDDL.
.\"
.\" A full copy of the text of the CDDL should have accompanied this
.\" source.  A copy of the CDDL is also available via the Internet at
.\" http://www.illumos.org/license/CDDL.
.\"
.\"
.\" Copyright (c) 2014, Joyent, Inc.
.\"
.Dd "Dec 20, 2014"
.Dt FCLOSEALL 3C
.Os
.Sh NAME
.Nm fcloseall
.Nd close all standard I/O streams
.Sh SYNOPSIS
.In stdio.h
.Ft int
.Fo fcloseall
.Fa void
.Fc
.Sh DESCRIPTION
The
.Fn fcloseall
function closes all open standard I/O streams.
The equivalent of
.Xr fflush 3C
is called on each stream before closing, thus any buffered or pending
input is discarded while any buffered or pending output is written out
to the underlying file.
This includes the standard streams,
.Vt stdin ,
.Vt stdout ,
and
.Vt stderr .
.Sh RETURN VALUES
Currently, the function
.Fn fcloseall
always returns
.Sy 0 .
Note, portable applications should always check the return value.
.Sh INTERFACE STABILITY
.Sy Committed .
.Sh MT-LEVEL
.Sy Mt-Safe .
.Sh SEE ALSO
.Xr close 2 ,
.Xr fflush 3C ,
.Xr attributes 5 ,
.Xr environ 5 ,
.Xr standards 5