NAME
bcopy – copy bytes in memory
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 object src to object dst. The two objects 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().