1.\" $NetBSD: bswap.3,v 1.9 2003/10/05 17:48:49 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.\" 3. The name of the author may not be used to endorse or promote products 14.\" derived from this software without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd March 17, 1998 28.Dt BSWAP 3 29.Os 30.Sh NAME 31.Nm bswap16 , 32.Nm bswap32 , 33.Nm bswap64 34.Nd byte-order swapping functions 35.Sh LIBRARY 36.Lb libc 37.Sh SYNOPSIS 38.In sys/types.h 39.In machine/bswap.h 40.Ft u_int16_t 41.Fn bswap16 "u_int16_t" 42.Ft u_int32_t 43.Fn bswap32 "u_int32_t" 44.Ft u_int64_t 45.Fn bswap64 "u_int64_t" 46.Sh DESCRIPTION 47The 48.Fn bswap16 , 49.Fn bswap32 , 50and 51.Fn bswap64 52functions return the value of their argument with the bytes inverted. 53They can be used to convert 16, 32 or 64 bits integers from little to big 54endian, or vice-versa. 55.Sh SEE ALSO 56.Xr byteorder 3 57