Function copywithendian

extlibs/lua/src/lstrlib.c:1538–1549

** Copy 'size' bytes from 'src' to 'dest', correcting endianness if ** given 'islittle' is different from native endianness. */

** given 'islittle' is different from native endianness.
*/
static void copywithendian (volatile char *dest, volatile const char *src,
                            int size, int islittle) {
  if (islittle == nativeendian.little) {
    while (size-- != 0)
      *(dest++) = *(src++);
  }
  else {
    dest += size - 1;
    while (size-- != 0)
      *(dest--) = *(src++);
  }
}


static int str_pack (lua_State *L) {