-.TH FREAD 3 "April 1, 1989"
-.UC 4
-.SH NAME
-fread, fwrite \- buffered binary input/output
-.SH SYNOPSIS
-.B #include <stdio.h>
-.PP
-.B fread(ptr, sizeof(*ptr), nitems, stream)
-.br
-.SM
-.B FILE
-.B *stream;
-.PP
-.B fwrite(ptr, sizeof(*ptr), nitems, stream)
-.br
-.SM
-.B FILE
-.B *stream;
-.SH DESCRIPTION
-.I Fread
-reads, into a block beginning at
-.IR ptr ,
-.I nitems
-of data of the type of
-.I *ptr
-from the named input
-.IR stream .
-It returns the number of items actually read.
-.PP
-If
-.I stream
-is
-.B stdin
-and the standard output is line buffered, then any partial output line
-will be flushed before any call to
-.IR read (2)
-to satisfy the
-.IR fread .
-.PP
-.I Fwrite
-appends at most
-.I nitems
-of data of the type of
-.I *ptr
-beginning at
-.I ptr
-to the named output
-.IR stream .
-It returns the number of items actually written.
-.SH "SEE ALSO"
-read(2),
-write(2),
-fopen(3),
-getc(3),
-putc(3),
-gets(3),
-puts(3),
-printf(3),
-scanf(3)
-.SH DIAGNOSTICS
-.I Fread
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)fread.3 6.6 (Berkeley) 6/29/91
+.\"
+.Dd June 29, 1991
+.Dt FREAD 3
+.Os
+.Sh NAME
+.Nm fread ,
+.Nm fwrite
+.Nd binary stream input/output
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fread "void *ptr" "size_t size" "size_t nmemb" "FILE *stream"
+.Ft int
+.Fn fwrite "void *ptr" "size_t size" "size_t nmemb" "FILE *stream"
+.Sh DESCRIPTION
+The function
+.Fn fread
+reads
+.Fa nmemb
+elements of data, each
+.Xr size
+bytes long, from the stream pointed to by
+.Fa stream ,
+storing them at the location given by
+.Fa ptr .
+.Pp
+The function
+.Fn fwrite
+writes
+.Fa nmemb
+elements of data, each
+.Fa size
+bytes long, to the stream pointed to by
+.Fa stream ,
+obtaining them from the location given by
+.Fa ptr .
+.Sh RETURN VALUES
+The functions
+.Fn fread
+and
+.Fn fwrite
+advance the file position indicator for the stream
+by the number of characters successfully read or written and return
+that number.
+If an error occurs, or the end-of-file is reached,
+the return value is a short character count (or zero).
+.Pp
+The function
+.Fn fread
+does not distinguish between end-of-file and error, and callers
+must use
+.Xr feof 3
+and
+.Xr ferror 3
+to determine which occurred.
+.Sh SEE ALSO
+.Xr read 2 ,
+.Xr write 2
+.Sh STANDARDS
+The functions
+.Fn fread
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