C++ (Cpp) AqlValue::toDouble示例

示例#1

文件： Aggregator.cpp 项目： triagens/arangodb

void AggregatorSum::reduce(AqlValue const& cmpValue) {
  if (!invalid) {
    if (cmpValue.isNull(true)) {
      // ignore `null` values here
      return;
    }
    if (cmpValue.isNumber()) {
      double const number = cmpValue.toDouble(trx);
      if (!std::isnan(number) && number != HUGE_VAL &&
          number != -HUGE_VAL) {
        sum += number;
        return;
      }
    }
  }

  invalid = true;
}

示例#2

文件： Aggregator.cpp 项目： triagens/arangodb

void AggregatorVarianceBase::reduce(AqlValue const& cmpValue) {
  if (!invalid) {
    if (cmpValue.isNull(true)) {
      // ignore `null` values here
      return;
    }
    if (cmpValue.isNumber()) {
      double const number = cmpValue.toDouble(trx);
      if (!std::isnan(number) && number != HUGE_VAL &&
          number != -HUGE_VAL) {
        double const delta = number - mean;
        ++count;
        mean += delta / count;
        sum += delta * (number - mean);
        return;
      }
    }
  }

  invalid = true;
}