string/FreeBSD/swab.3

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  28 .\"     @(#)swab.3      8.1 (Berkeley) 6/4/93
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  31 .Dd December 10, 2004
  32 .Dt SWAB 3
  33 .Os
  34 .Sh NAME
  35 .Nm swab
  36 .Nd swap adjacent bytes
  37 .Sh LIBRARY
  38 .Lb libc
  39 .Sh SYNOPSIS
  40 .In unistd.h
  41 .Ft void
  42 .Fn swab "const void * restrict src" "void * restrict dst" "ssize_t len"
  43 .Sh DESCRIPTION
  44 The function
  45 .Fn swab
  46 copies
  47 .Fa len
  48 bytes from the location referenced by
  49 .Fa src
  50 to the location referenced by
  51 .Fa dst ,
  52 swapping adjacent bytes.
  53 .Pp
  54 The argument
  55 .Fa len
  56 must be an even number.
  57 .Sh SEE ALSO
  58 .Xr bzero 3 ,
  59 .Xr memset 3
  60 .Sh HISTORY
  61 A
  62 .Fn swab
  63 function appeared in
  64 .At v7 .