Hi. See https://issues.apache.org/jira/browse/MATH-1129
The problem reported was due to the sorting procedure not behaving correctly in the presence of NaN. This procedure could be replaced by an equivalent method from the JDK: java.util.Arrays.sort(double[],int,int) Any objection? Regards, Gilles --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org