Standalone program for computing autocorrelation functions Created by Peter Kosovan 2005 - .... The program uses the fast correlation algorithm describe in the book of D. Frenkel and B. Smit: Understanding molecular simulation, chapter 4.4.2: Order-n algorithm to measure correlations. Note that this algorithm cannot be used as is to compute any autocorrelation function. For those, which are not linearly additive, like MSD, corretction have to be made to avoid systematic errors.