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
43 .Nd binary stream input/output
49 .Fn fread "void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream"
51 .Fn fread_unlocked "void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream"
53 .Fn fwrite "const void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream"
55 .Fn fwrite_unlocked "const void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream"
63 bytes long, from the stream pointed to by
65 storing them at the location given by
74 bytes long, to the stream pointed to by
76 obtaining them from the location given by
83 functions are equivalent to
87 respectively, except that the caller is responsible for locking the stream
91 These functions may be used to avoid the overhead of locking the stream
92 and to prevent races when multiple threads are operating on the same stream.
98 advance the file position indicator for the stream
99 by the number of bytes read or written.
100 They return the number of objects read or written.
101 If an error occurs, or the end-of-file is reached,
102 the return value is a short object count (or zero).
106 does not distinguish between end-of-file and error, and callers
111 to determine which occurred.
114 returns a value less than
116 only if a write error has occurred.