1 .\" Copyright (c) 1990, 1991, 1993
2 .\" The Regents of the University of California. All rights reserved.
4 .\" This code is derived from software contributed to Berkeley by
5 .\" Chris Torek and the American National Standards Committee X3,
6 .\" on Information Processing Systems.
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32 .\" @(#)fread.3 8.2 (Berkeley) 3/8/94
33 .\" $FreeBSD: src/lib/libc/stdio/fread.3,v 1.10 2007/01/09 00:28:06 imp Exp $
34 .\" $DragonFly: src/lib/libc/stdio/fread.3,v 1.2 2003/06/17 04:26:46 dillon Exp $
42 .Nd binary stream input/output
48 .Fn fread "void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream"
50 .Fn fwrite "const void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream"
58 bytes long, from the stream pointed to by
60 storing them at the location given by
69 bytes long, to the stream pointed to by
71 obtaining them from the location given by
78 advance the file position indicator for the stream
79 by the number of bytes read or written.
80 They return the number of objects read or written.
81 If an error occurs, or the end-of-file is reached,
82 the return value is a short object count (or zero).
86 does not distinguish between end-of-file and error, and callers
91 to determine which occurred.
94 returns a value less than
96 only if a write error has occurred.