Name: yyT116575 Date: 03/26/2001


I have reproduced this exact same problem in JBuilder 3.5 using JDK 1.2.2,
Microsoft Internet Explorer using JVM 3234, Netscape 4.7 using Java 1.1.5, and
Netscape 6.0 using JRE version 1.3.0_01 Java HotSpot(TM) Client VM, so it is
pretty widespread

This is really easy to reproduce, just execute the following code:

>
public class doubletest {
  public static void main(String args[]) {
    double a = 1.2E-5;
    double b = 1.0E-6;
    double c = a + b;
    double d = 1.2E-5 + 1.0E-6;

    System.out.println("a: " + new Double(a).toString());
    System.out.println("b: " + new Double(b).toString());
    System.out.println("c: " + new Double(c).toString());
    System.out.println("d: " + new Double(d).toString());
  }
}
>

The output you get is:

>
a: 1.2E-5
b: 1.0E-6
c: 1.3000000000000001E-5
d: 1.3000000000000001E-5
>

This is only one example. I have seen this for many other values, but not all
values.

There are some bug reports that reference similar problems, but these all site
the cause as a JIT compilier, and I don't think the 4 different runtime systems
listed above use the same JIT compiler.
(Review ID: 119519)
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