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Fix the 0 count problem
This commit is contained in:
committed by
Leonid Fedorov
parent
80a2d8e9f5
commit
e7cab8445c
@ -136,22 +136,32 @@ mcsv1_UDAF::ReturnCode regr_intercept::subEvaluate(mcsv1Context* context, const
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long double inCxy = inData->cxy;
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uint64_t resCnt = inCnt + outCnt;
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long double deltax = outAvgx - inAvgx;
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long double deltay = outAvgy - inAvgy;
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if (resCnt == 0)
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{
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outData->avgx = 0;
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outData->avgy = 0;
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outData->cx = 0;
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outData->cxy = 0;
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outData->cnt = 0;
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}
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else
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{
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long double deltax = outAvgx - inAvgx;
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long double deltay = outAvgy - inAvgy;
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long double resAvgx = inAvgx + deltax * outCnt / resCnt;
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long double resAvgy = inAvgy + deltay * outCnt / resCnt;
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long double resAvgx = inAvgx + deltax * outCnt / resCnt;
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long double resAvgy = inAvgy + deltay * outCnt / resCnt;
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long double resCx = outCx + inCx + deltax * deltax * inCnt * outCnt / resCnt;
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long double resCx = outCx + inCx + deltax * deltax * inCnt * outCnt / resCnt;
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long double resCxy = outCxy + inCxy + deltax * deltay * inCnt * outCnt / resCnt;
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outData->avgx = resAvgx;
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outData->avgy = resAvgy;
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outData->cx = resCx;
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outData->cxy = resCxy;
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outData->cnt = resCnt;
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long double resCxy = outCxy + inCxy + deltax * deltay * inCnt * outCnt / resCnt;
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outData->avgx = resAvgx;
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outData->avgy = resAvgy;
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outData->cx = resCx;
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outData->cxy = resCxy;
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outData->cnt = resCnt;
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}
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return mcsv1_UDAF::SUCCESS;
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}
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