1.\" $NetBSD: bitops.3,v 1.6 2020/01/13 16:11:53 uwe Exp $ 2.\" 3.\" Copyright (c) 2011 Jukka Ruohonen <jruohonen@iki.fi> 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd December 4, 2012 28.Dt BITOPS 3 29.Os 30.Sh NAME 31.Nm bitops 32.Nd functions related to bits and integers 33.Sh SYNOPSIS 34.In sys/bitops.h 35.Sh DESCRIPTION 36The 37.In sys/bitops.h 38header provides macros and 39.Vt static inline 40functions related to bits and integers. 41Among these are: 42.Bl -tag -width ".Xr fast_divide32 3" -offset indent 43.It Xr bitmap 3 44bitmap manipulation macros 45.It Xr fast_divide32 3 46a function for fast 32-bit division 47.It Xr ffs32 3 48functions to find the first and last set bit in integers of type 49.Vt uint32_t 50and 51.Vt uint64_t 52.It Xr ilog2 3 53a macro for binary logarithm 54.El 55.Sh SEE ALSO 56.Xr bits 3 , 57.Xr bitstring 3 , 58.Xr cdefs 3 , 59.Xr param 3 60.Sh HISTORY 61The 62.In sys/bitops.h 63header first appeared in 64.Nx 4.0 . 65