Function MultiplyMaxPrecision

cpp/src/gandiva/precompiled/decimal_ops.cc:319–329

Multiply when the out_precision is 38.

// Multiply when the out_precision is 38.
static BasicDecimal128 MultiplyMaxPrecision(const BasicDecimalScalar128& x,
                                            const BasicDecimalScalar128& y,
                                            int32_t out_scale, bool* overflow) {
  auto delta_scale = x.scale() + y.scale() - out_scale;
  DCHECK_GE(delta_scale, 0);
  if (delta_scale == 0) {
    return MultiplyMaxPrecisionNoScaleDown(x, y, out_scale, overflow);
  } else {
    return MultiplyMaxPrecisionAndScaleDown(x, y, out_scale, overflow);
  }
}

BasicDecimal128 Multiply(const BasicDecimalScalar128& x, const BasicDecimalScalar128& y,
                         int32_t out_precision, int32_t out_scale, bool* overflow) {