title: Java math package for inverse cumulative distributions of skewed normal together with poisson and exponential
body: <p>I am looking for a package that provides mathematical functions for the non-symmetrical (skewed) normal distribution and also the poisson and exponential distributions.</p>
  
  <p>I originally looked at the <a href="http://acs.lbl.gov/software/colt/">Colt</a> package but it does not provide the inverse cumulative function. </p>
  
  <p>So I changed to <a href="http://commons.apache.org/math/">Apache Commons Math3</a> which provides a much more comprehensive set of functionality, including the inverse cumulative probability of all distributions.</p>
  
  <p>However, now I hit a wall again because I need the Normal Distribution to be parametrized for a non symmetric shape (i.e. left part of the mean is different than the right part of the mean). Are you aware of any package that supports all the above?</p>