memcpyfn memcpy(dest: *mut c_void, src: *const c_void, n: libc::size_t) -> *c_voidmemmovefn memmove(dest: *mut c_void, src: *const c_void, n: libc::size_t) -> *c_voidmemsetfn memset(dest: *mut c_void, c: libc::c_int, len: libc::size_t) -> *c_void