Wrong result in multiplication

Hi, everybody!
I have a problem with a simple multiplication for which I have not found a solution yet. And I do just hope, that anyone here has encountered and solved it already.
The problem is as follows:
JW = (long)(Math.floor(SOLZJ*100));
JW is a long, SOLZJ is a float. At the crucial moment, SOLZJ contains the value of 582.72. The result, which JW contains, after computing the expression is 58271. So, you see, something went terribly wrong. As it is a variable, which is used in some further calculations, the error exponentiates.
Sure hope, anyone can help me with that.
By the way... I tried to use this expression outside of my method (to eliminate possible inherited errors). The following piece of code gets the same result as mentioned above:
float SOLZJ = 582.72F;
long JW;
JW = (long)(Math.floor(SOLZJ*100));
System.out.println(""+JW);
Result is 58271 instead of 58272...
Thanks for helping me out,
Matthias

what im saying is that a programming language is a box of tools, you use these to build applications (bigger, better tools)
there are a few distinct phases a program has
data aquisition
data formatting
data maipulation and calculation
if you find that the tool you are using does not perform the task, use another one, if it does not exist, build it
it is in the nature of floating point numbers/calcualations on comoputers that errors are normal, small compared to the numbers involved (hopefully)
one such 'problem' was that a financial caluclation came out 'wrong' by a billionth of a penny, wrong, but hey, who cares..
BigDecimal will solve this problem, but maybe overkill
if you require say 2 demimal point accuracy, then you could easily write your own class that holds the data as an int (value *100)

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[snip]
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Hi,
The following test case is supplied in the metalink in bug no. 2871341, the base bug for this bug is 2679062.
REPRODUCIBILITY:
Reproduces constantly with simple test case below:
TEST CASE:
DROP TABLE A1
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CREATE OR REPLACE VIEW A_ALL AS SELECT * FROM A1 UNION ALL SELECT * FROM A2;
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ANALYZE TABLE A2 COMPUTE STATISTICS;
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drop table t1_2;
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create table t1_2(c1 number, c2 number, c3 number);
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prompt
prompt #######################################
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prompt
prompt #######################################
prompt try 2 - works fine
prompt #######################################
prompt
select * from t1
where
(c1=1)
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prompt
prompt #######################################
prompt try 3 - try 1 OR try 2 does not work !
prompt #######################################
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and
( ( (c2=2) and (c3=100) )
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opened a TAR and wanted to share with you.
Tal Olier ([email protected]).

Hi,
The following test case is supplied in the metalink in bug no. 2871341, the base bug for this bug is 2679062.
REPRODUCIBILITY:
Reproduces constantly with simple test case below:
TEST CASE:
DROP TABLE A1
CREATE TABLE A1 (X1 VARCHAR2(10), X2 VARCHAR2(10))
REM *********** Create the second table: ***************
DROP TABLE A2
CREATE TABLE A2 (X1 VARCHAR2(10), X2 VARCHAR2(10))
INSERT INTO A1 VALUES ('1','2');
INSERT INTO A2 VALUES ('3','4');
COMMIT;
CREATE INDEX A1_X1 ON A1(X1 );
CREATE INDEX A1_X2 ON A1(X2);
CREATE INDEX A2_X1 ON A2(X1);
CREATE INDEX A2_X2 ON A2(X2);
CREATE OR REPLACE VIEW A_ALL AS SELECT * FROM A1 UNION ALL SELECT * FROM A2;
ANALYZE TABLE A1 COMPUTE STATISTICS;
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SELECT * FROM A_ALL WHERE ((X1='1' AND X2='2') OR (X1='3' AND X2='4'));
The 2nd query returns answer while the second is not !
The following is published in the 9.2.0.4 fixed bug list:
" 9204 - 2679062 - Wrong results possible from multi-column INLIST "
I have installed 9.2.0.4 patch set on a win 2000 machine Oracle and saw that the above case is actually solved but our application which has a very similar case doesn't.
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insert into t1_1 values(1, 2, 100);
insert into t1_2 values(1, 2, 200);
commit;
analyze table t1_1 compute statistics;
analyze table t1_2 compute statistics;
prompt
prompt #######################################
prompt try 1 - works fine
prompt #######################################
prompt
select * from t1
where
(c1=1)
and
( (c2=2) and (c3=100)
prompt
prompt #######################################
prompt try 2 - works fine
prompt #######################################
prompt
select * from t1
where
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and
(c2=2) and (c3=200)
prompt
prompt #######################################
prompt try 3 - try 1 OR try 2 does not work !
prompt #######################################
prompt
select * from t1
where
(c1=1)
and
( ( (c2=2) and (c3=100) )
or
( (c2=2) and (c3=200) )
opened a TAR and wanted to share with you.
Tal Olier ([email protected]).

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[http://i264.photobucket.com/albums/ii176/necrombi/NEO/1-1.png]
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[http://i264.photobucket.com/albums/ii176/necrombi/NEO/2.png]
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Hi, thanks for your reply.
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