Resolution:
Description:
===========
Result of double value calculations incorrect.

Environment:
===========
TIBCO BusinessEvents 3.x,4.x, 5.x
All Operating Systems

Symptoms:
=========
Result of double calculation doesn’t return exact result .

Example:
double a = 1;
double b = 0.9;
System.debugOut("Result : " + (a - b));

Result is 0.09999999999999998

Cause:
======
Java limitation

Resolution:
========
Use Math.roundFraction() to return the correct result.

Example:
double c = Math.roundFraction(a-b, 15);
System.debugOut("Result after round: " + Math.roundFraction(a-b, 15));
System.debugOut("Result2 after round: " + c );

Note:
A double decimal should have a precision of 15 digits at max ( see http://en.wikipedia.org/wiki/Double_precision).