MathUtils.factorial(n) fails for n >= 17
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Key: MATH-240
URL: https://issues.apache.org/jira/browse/MATH-240
Project: Commons Math
Issue Type: Bug
Affects Versions: 2.0
Reporter: Christian Semrau
Priority: Minor
The result of MathUtils.factorial(n) for n = 17...20 is wrong, probably because
of rounding errors in the double calculations.
Replace the first line of MathUtilsTest.testFactorial() by
for (int i = 1; i <= 20; i++) {
to check all valid arguments for the long result and see the failure.
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