1.\" $NetBSD: bswap.3,v 1.11 2009/10/22 21:50:01 bouyer Exp $ 2.\" 3.\" Copyright (c) 1998 Manuel Bouyer. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22.\" INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24.\" 25.Dd March 17, 1998 26.Dt BSWAP 3 27.Os 28.Sh NAME 29.Nm bswap16 , 30.Nm bswap32 , 31.Nm bswap64 32.Nd byte-order swapping functions 33.Sh LIBRARY 34.Lb libc 35.Sh SYNOPSIS 36.In sys/types.h 37.In machine/bswap.h 38.Ft uint16_t 39.Fn bswap16 "uint16_t" 40.Ft uint32_t 41.Fn bswap32 "uint32_t" 42.Ft uint64_t 43.Fn bswap64 "uint64_t" 44.Sh DESCRIPTION 45The 46.Fn bswap16 , 47.Fn bswap32 , 48and 49.Fn bswap64 50functions return the value of their argument with the bytes inverted. 51They can be used to convert 16, 32 or 64 bits integers from little to big 52endian, or vice-versa. 53.Sh SEE ALSO 54.Xr byteorder 3 55