Function AddFastPath

cpp/src/gandiva/precompiled/decimal_ops.cc:50–57

Adjust x and y to the same scale, and add them.

/// Adjust x and y to the same scale, and add them.
static BasicDecimal128 AddFastPath(const BasicDecimalScalar128& x,
                                   const BasicDecimalScalar128& y, int32_t out_scale) {
  auto higher_scale = std::max(x.scale(), y.scale());

  auto x_scaled = CheckAndIncreaseScale(x.value(), higher_scale - x.scale());
  auto y_scaled = CheckAndIncreaseScale(y.value(), higher_scale - y.scale());
  return x_scaled + y_scaled;
}

/// Add x and y, caller has ensured there can be no overflow.
static BasicDecimal128 AddNoOverflow(const BasicDecimalScalar128& x,