63 lines
2.1 KiB
Groff
63 lines
2.1 KiB
Groff
.\" $NetBSD: __arraycount.3,v 1.6 2010/12/16 10:40:04 jruoho Exp $
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.\"
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.\" Copyright (c) 2010 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Jukka Ruohonen.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd December 16, 2010
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.Dt __ARRAYCOUNT 3
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.Os
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.Sh NAME
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.Nm __arraycount
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.Nd macro for statically allocated arrays
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.Sh SYNOPSIS
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.In sys/cdefs.h
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.Ft size_t
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.Fn __arraycount x
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.Sh DESCRIPTION
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The
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.Fn __arraycount
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macro returns the number of elements in a statically allocated buffer.
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.Sh EXAMPLES
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The following example demonstrates a typical usage of
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.Fn __arraycount :
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.Bd -literal -offset indent
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uint8_t buf[BUFSIZE];
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size_t i;
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\&...
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for (i = 0; i \*[Lt] __arraycount(buf); i++)
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\&...
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.Ed
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.Sh SEE ALSO
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.Xr cdefs 3
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.Sh HISTORY
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The
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.Fn __arraycount
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macro first appeared in
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.Nx 4.0 .
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