NAME
bcopy —
copy byte string
LIBRARY
library “libc”
SYNOPSIS
#include
<strings.h>
void
bcopy(const
void *src, void
*dst, size_t
len);
DESCRIPTION
Thebcopy()
function copies len bytes from string
src to string dst. The two strings
may overlap. If len is zero, no bytes are copied.
SEE ALSO
HISTORY
A bcopy() function appeared in
4.2BSD. Its prototype existed previously in
<string.h> before it was
moved to <strings.h> for
IEEE Std 1003.1-2001 (“POSIX.1”)
compliance.
IEEE Std 1003.1-2008
(“POSIX.1”) removes the specification of
bcopy() and it is marked as LEGACY in
IEEE Std 1003.1-2004 (“POSIX.1”). New
programs should use
memmove(3). If the input and output buffer do not overlap, then
memcpy(3) is more efficient. Note that
bcopy() takes src and
dst in the opposite order from
memmove() and memcpy().