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Given an array V of doubles the goal is to compute the average A.
The usually recommended solution is something like:
double A = V[0];
for (int i = 1; i<N; i++)
{
A = ((A * i) + V[i]) / (i + 1.0);
}
Computing an average of an array seems to be a common operation, yet I fail to find a function that would do that in a vectorized fashion.
All I found in vDSP is the vavlinD function which computes arrays of averages, and cannot be retrofitted to compute the average of a single array.
Found the right function in vDSP. It is vDSP_meanv.