https://bz.apache.org/bugzilla/show_bug.cgi?id=66189
Bug ID: 66189
Summary: Decimal discrepancy in simple arithmetic operation
Product: POI
Version: 5.2.2-FINAL
Hardware: PC
OS: Mac OS X 10.1
Status: NEW
Severity: normal
Priority: P2
Component: XSSF
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 38355
--> https://bz.apache.org/bugzilla/attachment.cgi?id=38355&action=edit
Example
I'am doing an simple arithmetic operation in cell , POI(Ver5.2.0) and Micro
Excel calculatng results and the results are fine.
The problem occurs when I update apache poi to version 5.2.2, the results
don't match.
e.g.
Formula: C1=(A2+(B2-A2)*A1/10)-1
Where:
A1=5
A2=(A3-1)*0.63+1
A3=1.35
B2=(B3-1)*0.5+1
B3=1.35
POI v5.2.0 results: C1=0.1977500000000001 -> Java logic ->
Round(C1*100,2)=19.78
POI v5.2.2 results: C1=0.19774999999999987 -> Java logic ->
Round(C1*100,2)=19.77
Micro Excel Calculation results: C1=0.19775 -> Excel Round ->
D1=ROUND(C1*100,2)=19.78
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