Make all bucket and overflow addresses unsigned

[unix-history] / usr / src / lib / libc / stdio / fread.3

.\" Copyright (c) 1990 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Chris Torek.
.\"
.\" %sccs.include.redist.man%
.\"
.\"	@(#)fread.3	6.4 (Berkeley) %G%
.\"
.TH FREAD 3 ""
.UC 7
.SH NAME
fread, fwrite \- stream binary input/output
.SH SYNOPSIS
.nf
.ft B
#include <stdio.h>

int
fread(void *ptr, size_t size, size_t count, FILE *stream);

int
fwrite(void *ptr, size_t size, size_t count, FILE *stream);
.ft R
.fi
.SH DESCRIPTION
.I Fread
reads
.I count
items of data, each
.I size
bytes long, from the given input
.IR stream ,
storing them at the location given by
.IR ptr .
It returns the actual count of items read
(which will be less than
.I count
in the event of an
.B EOF
or error).
.PP
Fread does not distinguish between end-of-file and error, and callers
must use
.IR feof (3)
and
.IR ferror (3)
to determine which occurred.
.PP
.I Fwrite
writes
.I count
items of data, each
.I size
bytes long, to the given output
.I stream ,
obtaining them from the location given by
.IR ptr .
It returns the actual count of items written.
.SH "RETURN VALUE"
These functions return 0 (or a short count) upon end of file or error.
.SH "SEE ALSO"
read(2), write(2)