Function Copy

cpp/src/arrow/util/bitmap_test.cc:1375–1382

namespace {

static Bitmap Copy(const Bitmap& bitmap, std::shared_ptr<Buffer> storage) {
  int64_t i = 0;
  Bitmap bitmaps[] = {bitmap};
  auto min_offset = Bitmap::VisitWords(bitmaps, [&](std::array<uint64_t, 1> uint64s) {
    reinterpret_cast<uint64_t*>(storage->mutable_data())[i++] = uint64s[0];
  });
  return Bitmap(storage, min_offset, bitmap.length());
}

}  // namespace