Baste Nesse Buanes created MATH-835:
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Summary: Fraction percentageValue rare overflow
Key: MATH-835
URL: https://issues.apache.org/jira/browse/MATH-835
Project: Commons Math
Issue Type: Bug
Affects Versions: 3.0
Reporter: Baste Nesse Buanes
Priority: Minor
The percentageValue() method of the Fraction class works by first multiplying
the Fraction by 100, then converting the Fraction to a double. This causes
overflows when the numerator is greater than Integer.MAX_VALUE/100, even when
the value of the fraction is far below this value.
The patch changes the method to first convert to a double value, and then
multiply this value by 100 - the result should be the same, but with less
overflows. An addition to the test is also included.
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