// Lower the ratio for identifying block configuration for quantized constants.
constexpr float kBlockOverRandomSparsityRatioQuant = 0.8;

Eigen::half APFloatToEigenHalf(const APFloat& val) {
  uint16_t raw_data = val.bitcastToAPInt().getZExtValue();
  return Eigen::numext::bit_cast<Eigen::half>(raw_data);
}

APFloat EigenHalfToAPFloat(const Eigen::half& val) {
  uint16_t raw_data = Eigen::numext::bit_cast<uint16_t>(val);

      bool is_mul = llvm::isa<MulOp>(binary_op);
      auto new_filter =
          filter_cst.mapValues(filter_type.getElementType(), [&](APFloat it) {
            return (is_mul ? it * cst_value : it / cst_value).bitcastToAPInt();
          });
      // We recreate the constant op in case it is shared by the other ops. This
      // might increase the model size.
      auto new_filter_op = rewriter.create<ConstOp>(