org.apache.commons.math.util
Interfaces 
DoubleArray
NumberTransformer
Classes 
BigReal
BigRealField
BigRealField.LazyHolder
CompositeFormat
ContinuedFraction
DefaultTransformer
FastMath
MathUtils
MultidimensionalCounter
OpenIntToDoubleHashMap
OpenIntToFieldHashMap
ResizableDoubleArray
TransformerMap
Enums 
MathUtils.OrderDirection