man3/bcopy.3

   1 .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
   2 .\"
   3 .\" SPDX-License-Identifier: Linux-man-pages-copyleft
   4 .\"
   5 .\" References consulted:
   6 .\"     Linux libc source code
   7 .\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
   8 .\"     386BSD man pages
   9 .\"
  10 .\" Modified Sun Feb 26 14:52:00 1995 by Rik Faith <faith@cs.unc.edu>
  11 .\" Modified Tue Oct 22 23:48:10 1996 by Eric S. Raymond <esr@thyrsus.com>
  12 .\" "
  13 .TH BCOPY 3 2021-03-22 "Linux man-pages (unreleased)"
  14 .SH NAME
  15 bcopy \- copy byte sequence
  16 .SH LIBRARY
  17 Standard C library
  18 .RI ( libc ", " \-lc )
  19 .SH SYNOPSIS
  20 .nf
  21 .B #include <strings.h>
  22 .PP
  23 .BI "void bcopy(const void *" src ", void *" dest ", size_t " n );
  24 .fi
  25 .SH DESCRIPTION
  26 The
  27 .BR bcopy ()
  28 function copies
  29 .I n
  30 bytes from
  31 .I src
  32 to
  33 .IR dest .
  34 The result is correct, even when both areas overlap.
  35 .SH RETURN VALUE
  36 None.
  37 .SH ATTRIBUTES
  38 For an explanation of the terms used in this section, see
  39 .BR attributes (7).
  40 .ad l
  41 .nh
  42 .TS
  43 allbox;
  44 lbx lb lb
  45 l l l.
  46 Interface       Attribute       Value
  47 T{
  48 .BR bcopy ()
  49 T}      Thread safety   MT-Safe
  50 .TE
  51 .hy
  52 .ad
  53 .sp 1
  54 .SH STANDARDS
  55 4.3BSD.
  56 This function is deprecated (marked as LEGACY in POSIX.1-2001): use
  57 .BR memcpy (3)
  58 or
  59 .BR memmove (3)
  60 in new programs.
  61 Note that the first two arguments
  62 are interchanged for
  63 .BR memcpy (3)
  64 and
  65 .BR memmove (3).
  66 POSIX.1-2008 removes the specification of
  67 .BR bcopy ().
  68 .SH SEE ALSO
  69 .BR bstring (3),
  70 .BR memccpy (3),
  71 .BR memcpy (3),
  72 .BR memmove (3),
  73 .BR strcpy (3),
  74 .BR strncpy (3)