Bill,
I haven't tried it with negative numbers but I found round to create
error where commission dollars are concerned. I use the trunc function
to give the results in two decimal places where the extra half cent
makes a difference over the period of time.
total = trunc(sum * %,2)
Select trunc(-.872,2) from dual;
87
Ron
ROR mª¿ªm
>>> [EMAIL PROTECTED] 08/28/02 11:58AM >>>
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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