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From Geir Magnusson Jr <g...@pobox.com>
Subject Re: [classlib][math]compatibility: different values for BigDecimal(null, mc).toBigInteger() for Harmony and RI
Date Sun, 09 Jul 2006 22:34:15 GMT


Tim Ellison wrote:
> The reference implementation doesn't make sense in this example, and it
> is highly unlikely that any application will be dependent upon this
> behavior, so I propose that we do not apply this patch.

+1

(I pondered suggesting returning BigDecimal.valueOf(0), but that's not
right either...  Hard to imagine why the behavior of BigDecimal(null) is
unspecified...)

geir

> 
> If anyone objects to this decision I will happily reopen it.
> 
> Regards,
> Tim
> 
> 
> Vladimir Ivanov (JIRA) wrote:
>> [classlib][math]compatibility: different values for BigDecimal(null, mc).toBigInteger()
for Harmony and RI
>> ----------------------------------------------------------------------------------------------------------
>>
>>          Key: HARMONY-786
>>          URL: http://issues.apache.org/jira/browse/HARMONY-786
>>      Project: Harmony
>>         Type: Bug
>>
>>   Components: Classlib  
>>     Reporter: Vladimir Ivanov
>>
>>
>> The Harmony method java.math.BigDecimal(BigInteger, mc).toBigInteger() returns 'null'
while RI returns -9223372036854775808.
>>
>> =============== test.java =====================
>> import java.math.*;
>> public class test {
>>     public static void main(String args[] ) {
>> 	System.out.println("" + new BigDecimal((BigInteger) null, MathContext.UNLIMITED).toBigInteger())
;
>>     }
>> }
>> ===========================================
>>
>> Output:
>> C:\tmp\tmp17>C:\jdk1.5.0_06\bin\java.exe -showversion test
>> java version "1.5.0_06"
>> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
>> Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
>>
>> -9223372036854775808
>>
>> C:\tmp\tmp17>C:\jrockit-jdk1.5.0-windows-ia32\bin\java.exe -showversion test
>> java version "1.5.0"
>> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
>> BEA WebLogic JRockit(R) (build dra-38972-20041208-2001-win-ia32, R25.0.0-75, GC:
System optimized over throughput (initial strategy singleparpar))
>>
>> null
>>
>> C:\tmp\tmp17>C:\harmony\trunk_0427\deploy\jdk\jre\bin\java.exe -showversion test
>> java version 1.5 (subset)
>>
>> (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
>> null
>>
>>
> 

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