Function DowncastUInts

cpp/src/arrow/util/int_util.cc:402–404

}

void DowncastUInts(const uint64_t* source, uint8_t* dest, int64_t length) {
  CastIntsInternal(source, dest, length);
}

void DowncastUInts(const uint64_t* source, uint16_t* dest, int64_t length) {
  CastIntsInternal(source, dest, length);