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.\" Common Development and Distribution License ("CDDL"), version 1.0.
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.\" Copyright (c) 2014, Joyent, Inc.
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.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 3C ,
.Xr fflush 3C ,
.Xr attributes 5 ,
.Xr environ 5 ,
.Xr standards 5