code: public static <A extends Number & Comparable<?>> NumberExpression<A> round(Expression<A> num, int s) {
          return Expressions.numberOperation(num.getType(), MathOps.ROUND2, num, ConstantImpl.create(s));
      }
docs: Round to s decimal places
  
  @param num numeric expression
  @param s decimal places
  @return round(num, s)