Qualtagh created MATH-1273:
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Summary: Negative zero support in FastMath.pow
Key: MATH-1273
URL: https://issues.apache.org/jira/browse/MATH-1273
Project: Commons Math
Issue Type: Improvement
Affects Versions: 4.0
Reporter: Qualtagh
Priority: Trivial
Fix For: 4.0
FastMath.pow(double, double) and FastMath.pow(double, long) functions never
return negative zero.
Math.pow(-0.0, 5.0) = -0.0
FastMath.pow(-0.0, 5.0) = 0.0
Math.pow(-∞, -3.0) = -0.0
FastMath.pow(-∞, -3.0) = 0.0
Added support for negative zero.
Also, added ultimate tests to cover all special cases described in Math.pow
javadoc.
Slightly edited an existing test: there were some typos and duplicates.
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