Bug ID: JDK-4916097 Minor exponent over/underflow problem in jsr13 BigDecimal pow(int) method

Type: Bug
Component: core-libs
Sub-Component: java.math
Affected Version: 5.0

Priority: P4
Status: Resolved
Resolution: Fixed
OS: generic
CPU: generic

Submitted: 2003-09-02
Updated: 2003-09-12
Resolved: 2003-09-12

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5.0 tigerFixed

The pow(int) method added in jsr13 calculates the return value with

return new BigDecimal(intVal.pow(n), scale * n);

This scale calculation is not properly guarded against integer over/underflow, allowing for potentially very misleading results.  Additionally, the calculation of 0^n should probably be special-cased.

CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: tiger FIXED IN: tiger INTEGRATED IN: tiger tiger-b20

14-06-2004

SUGGESTED FIX See bug 4917089 for diffs. ###@###.### 2003-09-08

08-09-2003

EVALUATION A fine idea. ###@###.### 2003-09-02

02-09-2003

Relates :	JDK-4609098 - Add Decimal Arithmetic Enhancements into J2SE (JSR-013)
Relates :	JDK-4851776 - Allow control of precision and rounding of BigDecimal arithmetic operations