std::string
finalizeStringMean() const
{
std::string n = numSrcStr();
std::string a = accumStr();
std::string z = a + " / " + n;
return z;
}
std::string
finalizeStringMean() const
{
// Laks hack: for callers view and flat view, it would be
// more accurate if we divide the sum with the aggregate
// since the num of callers view and flat view will be
// accumulated
std::string n = numSrcStr();
std::string a = accumStr();
std::string z = a + " / " + n;
return z;
}
std::string
finalizeStringStdDev(std::string* meanRet = NULL) const
{
std::string n = numSrcStr();
std::string a1 = accumStr(); // running sum
std::string a2 = accum2Str(); // running sum of squares
std::string mean = a1 + " / " + n;
std::string z1 = "pow(" + mean + ", 2)"; // (mean)^2
std::string z2 = "(" + a2 + " / " + n + ")"; // (sum of squares)/n
std::string sdev = "sqrt(" + z2 + " - " + z1 + ")";
if (meanRet) {
*meanRet = mean;
}
return sdev;
}
