'\" t .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" .\" References consulted: .\" Linux libc source code .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) .\" 386BSD man pages .\" .\" Modified Sun Feb 26 14:52:00 1995 by Rik Faith .\" Modified Tue Oct 22 23:48:10 1996 by Eric S. Raymond .\" " .TH bcopy 3 2023-03-30 "Linux man-pages 6.04" .SH NAME bcopy \- copy byte sequence .SH LIBRARY Standard C library .RI ( libc ", " \-lc ) .SH SYNOPSIS .nf .B #include .PP .BI "[[deprecated]] void bcopy(const void " src [. n "], void " dest [. n "], \ size_t " n ); .fi .SH DESCRIPTION The .BR bcopy () function copies .I n bytes from .I src to .IR dest . The result is correct, even when both areas overlap. .SH RETURN VALUE None. .SH ATTRIBUTES For an explanation of the terms used in this section, see .BR attributes (7). .ad l .nh .TS allbox; lbx lb lb l l l. Interface Attribute Value T{ .BR bcopy () T} Thread safety MT-Safe .TE .hy .ad .sp 1 .SH STANDARDS None. .SH HISTORY 4.3BSD. .PP Marked as LEGACY in POSIX.1-2001: use .BR memcpy (3) or .BR memmove (3) in new programs. Note that the first two arguments are interchanged for .BR memcpy (3) and .BR memmove (3). POSIX.1-2008 removes the specification of .BR bcopy (). .SH SEE ALSO .BR bstring (3), .BR memccpy (3), .BR memcpy (3), .BR memmove (3), .BR strcpy (3), .BR strncpy (3)