1*2fe8fb19SBen Gras.\" Copyright (c) 1990, 1991, 1993 2*2fe8fb19SBen Gras.\" The Regents of the University of California. All rights reserved. 3*2fe8fb19SBen Gras.\" 4*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 5*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 6*2fe8fb19SBen Gras.\" are met: 7*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 8*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 9*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 10*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 11*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 12*2fe8fb19SBen Gras.\" 3. Neither the name of the University nor the names of its contributors 13*2fe8fb19SBen Gras.\" may be used to endorse or promote products derived from this software 14*2fe8fb19SBen Gras.\" without specific prior written permission. 15*2fe8fb19SBen Gras.\" 16*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17*2fe8fb19SBen Gras.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*2fe8fb19SBen Gras.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*2fe8fb19SBen Gras.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20*2fe8fb19SBen Gras.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*2fe8fb19SBen Gras.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*2fe8fb19SBen Gras.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*2fe8fb19SBen Gras.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*2fe8fb19SBen Gras.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*2fe8fb19SBen Gras.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*2fe8fb19SBen Gras.\" SUCH DAMAGE. 27*2fe8fb19SBen Gras.\" 28*2fe8fb19SBen Gras.\" from: @(#)swab.3 8.1 (Berkeley) 6/4/93 29*2fe8fb19SBen Gras.\" $NetBSD: swab.3,v 1.15 2010/04/30 03:52:13 jruoho Exp $ 30*2fe8fb19SBen Gras.\" 31*2fe8fb19SBen Gras.Dd April 30, 2010 32*2fe8fb19SBen Gras.Dt SWAB 3 33*2fe8fb19SBen Gras.Os 34*2fe8fb19SBen Gras.Sh NAME 35*2fe8fb19SBen Gras.Nm swab 36*2fe8fb19SBen Gras.Nd swap adjacent bytes 37*2fe8fb19SBen Gras.Sh LIBRARY 38*2fe8fb19SBen Gras.Lb libc 39*2fe8fb19SBen Gras.Sh SYNOPSIS 40*2fe8fb19SBen Gras.In unistd.h 41*2fe8fb19SBen Gras.Ft void 42*2fe8fb19SBen Gras.Fn swab "const void * restrict src" "void * restrict dst" "ssize_t len" 43*2fe8fb19SBen Gras.Sh DESCRIPTION 44*2fe8fb19SBen GrasThe function 45*2fe8fb19SBen Gras.Fn swab 46*2fe8fb19SBen Grascopies 47*2fe8fb19SBen Gras.Fa len 48*2fe8fb19SBen Grasbytes from the location referenced by 49*2fe8fb19SBen Gras.Fa src 50*2fe8fb19SBen Grasto the location referenced by 51*2fe8fb19SBen Gras.Fa dst , 52*2fe8fb19SBen Grasswapping adjacent bytes. 53*2fe8fb19SBen Gras.Pp 54*2fe8fb19SBen GrasIf 55*2fe8fb19SBen Gras.Fa len 56*2fe8fb19SBen Grasis negative or zero, 57*2fe8fb19SBen Gras.Fn swab 58*2fe8fb19SBen Grasdoes nothing. 59*2fe8fb19SBen GrasIf 60*2fe8fb19SBen Gras.Fa len 61*2fe8fb19SBen Grasis odd, 62*2fe8fb19SBen Gras.Fn swab 63*2fe8fb19SBen Grascopies 64*2fe8fb19SBen Gras.Fa len - 1 65*2fe8fb19SBen Grasbytes and the disposition of the last byte is unspecified. 66*2fe8fb19SBen Gras.Sh SEE ALSO 67*2fe8fb19SBen Gras.Xr bzero 3 , 68*2fe8fb19SBen Gras.Xr memset 3 69*2fe8fb19SBen Gras.Sh STANDARDS 70*2fe8fb19SBen GrasThe 71*2fe8fb19SBen Gras.Fn swab 72*2fe8fb19SBen Grasfunction conforms to 73*2fe8fb19SBen Gras.St -p1003.1-2001 . 74*2fe8fb19SBen Gras.Sh HISTORY 75*2fe8fb19SBen GrasA 76*2fe8fb19SBen Gras.Fn swab 77*2fe8fb19SBen Grasfunction appeared in 78*2fe8fb19SBen Gras.At v7 . 79*2fe8fb19SBen GrasIt was originally documented to be 80*2fe8fb19SBen Gras.Dq useful for carrying binary data between PDP11's and other machines . 81*2fe8fb19SBen Gras.Pp 82*2fe8fb19SBen GrasIn 83*2fe8fb19SBen Gras.Nx 6.0 84*2fe8fb19SBen Grasthe type of 85*2fe8fb19SBen Gras.Fa len 86*2fe8fb19SBen Graswas changed from 87*2fe8fb19SBen Gras.Vt size_t 88*2fe8fb19SBen Grasto 89*2fe8fb19SBen Gras.Vt ssize_t 90*2fe8fb19SBen Grasfor 91*2fe8fb19SBen Gras.Tn POSIX 92*2fe8fb19SBen Grascompliance. 93