[FFmpeg-user] Functions for average and variance calulations

Hi, are there such functions in the FFmpeg library? I have an integer array with lets say 13 numbers (accumulated counts of X in the range of 0..12) like: a) 0 1 0 1 2 7 9 5 4 3 2 0 1 b) 7 1 9 8 1 6 2 0 0 1 9 1 0 In a) the average X would be ~6 and the variance would be small. In b) the average X would be ~3.5 and the variance would be bigger. I'm looking for functions that can calulate such values with a result in float resolution. -Ulf -- Von meinem Seibert gesendet