5 POSIX specification: @url{http://www.opengroup.org/susv3xsh/bcopy.html}
9 Portability problems fixed by Gnulib:
12 This function is missing on some platforms:
16 Portability problems not fixed by Gnulib:
19 This function is marked as ``legacy'' in POSIX. Better use @code{memcpy}
20 or @code{memmove} instead.