b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
70 lines
2.2 KiB
Groff
70 lines
2.2 KiB
Groff
.\" $NetBSD: popcount.3,v 1.4 2009/07/22 07:07:27 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 2009 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Joerg Sonnenberger.
|
|
.\"
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
.\"
|
|
.Dd July 13, 2009
|
|
.Dt POPCOUNT 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm popcount ,
|
|
.Nm popcountl ,
|
|
.Nm popcountll ,
|
|
.Nm popcount32 ,
|
|
.Nm popcount64
|
|
.Nd count number of bits set in a bit string
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In strings.h
|
|
.Ft unsigned int
|
|
.Fn popcount "unsigned int value"
|
|
.Ft unsigned int
|
|
.Fn popcountl "unsigned long value"
|
|
.Ft unsigned int
|
|
.Fn popcountll "unsigned long long value"
|
|
.Ft unsigned int
|
|
.Fn popcount32 "uint32_t value"
|
|
.Ft unsigned int
|
|
.Fn popcount64 "uint64_t value"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
functions returns the number of bits set in
|
|
.Fa value .
|
|
.Sh SEE ALSO
|
|
.Xr ffs 3
|
|
.Sh HISTORY
|
|
The
|
|
.Fn popcount ,
|
|
.Fn popcountl ,
|
|
.Fn popcountll ,
|
|
.Fn popcount32 ,
|
|
and
|
|
.Fn popcount64
|
|
functions appeared in
|
|
.Nx 6.0 .
|