I would think -0.875 would round up therefore -0.87 is my guess.

Rick


                                                                                       
                            
                    Bill Buchan                                                        
                            
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                    Sent by:             Subject:     Slightly OT:  Rounding Negative 
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I'm trying to consolidate some numbers generated by a PL/SQL report vs. a
Java based report and these seem to be out due to rounding errors on
negative numbers.

In PL/SQL if I for example, round to 2 decimal places:

SQL> select round(-0.875,2) from dual;

ROUND(-0.875,2)
---------------
            -.88


In Java:


import java.*;

public class Round {

         public static void main(String[] args) {
                 double a = -0.875;
                 int i = (int)java.lang.Math.round(a*100);
                 double z = i;
                 z  = z / 100;
                 System.out.println(z);
                 }
         }

 >java Round
-0.87


which is 0.01 different (1 pence in this case).  If I use positive numbers
(+0.875) when the answer is 0.88 for both PL/SQL and Java.  PL/SQL's answer

looks "more"correct to me for the negative value - but what is the
mathematically correct rounding of -0.875?!

Thanks!

- Bill.

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