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Leonid Fedorov
2022-01-21 16:43:49 +00:00
parent 6b6411229f
commit 04752ec546
1376 changed files with 393460 additions and 412662 deletions
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53
utils/windowfunction/wf_sum_avg.h
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@@ -18,51 +18,46 @@
// $Id: wf_sum_avg.h 3868 2013-06-06 22:13:05Z xlou $
#pragma once
#include <set>
#include "windowfunctiontype.h"
namespace windowfunction
{
// T_IN is the data type of the input values.
// T_OUT is the data type we are using for output and internal values
template<typename T_IN, typename T_OUT>
// T_OUT is the data type we are using for output and internal values
template <typename T_IN, typename T_OUT>
class WF_sum_avg : public WindowFunctionType
{
public:
WF_sum_avg(int id, const std::string& name) :
WindowFunctionType(id, name), fDistinct(id != WF__SUM && id != WF__AVG)
{
resetData();
}
public:
WF_sum_avg(int id, const std::string& name)
: WindowFunctionType(id, name), fDistinct(id != WF__SUM && id != WF__AVG)
{
resetData();
}
// pure virtual in base
void operator()(int64_t b, int64_t e, int64_t c);
WindowFunctionType* clone() const;
void resetData();
// pure virtual in base
void operator()(int64_t b, int64_t e, int64_t c);
WindowFunctionType* clone() const;
void resetData();
static boost::shared_ptr<WindowFunctionType> makeFunction(int, const string&, int, WindowFunctionColumn*);
static boost::shared_ptr<WindowFunctionType> makeFunction(int, const string&, int, WindowFunctionColumn*);
protected:
T_IN fVal;
T_OUT fAvg;
T_OUT fSum;
uint64_t fCount;
bool fDistinct;
std::set<T_IN> fSet;
protected:
T_IN fVal;
T_OUT fAvg;
T_OUT fSum;
uint64_t fCount;
bool fDistinct;
std::set<T_IN> fSet;
void checkSumLimit(const T_IN& val, const T_OUT& sum);
void checkSumLimit(const T_IN& val, const T_OUT& sum);
int128_t calculateAvg(const int128_t& sum, const uint64_t count, const int scale);
long double calculateAvg(const long double& sum, const uint64_t count, const int scale);
int128_t calculateAvg(const int128_t& sum, const uint64_t count, const int scale);
long double calculateAvg(const long double& sum, const uint64_t count, const int scale);
};
} // namespace
} // namespace windowfunction
// vim:ts=4 sw=4: