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BCOPY(3) FreeBSD Library Functions Manual BCOPY(3)
NAME
bcopy - copy byte string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <strings.h>
void
bcopy(const void *src, void *dst, size_t len);
DESCRIPTION
The bcopy() 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
memccpy(3), memcpy(3), memmove(3), strcpy(3), strncpy(3)
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().
FreeBSD 14.0-RELEASE-p11 August 24, 2015 FreeBSD 14.0-RELEASE-p11