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## Package org.apache.commons.math3.util

Convenience routines and common data structures used throughout the commons-math library.

See:
Description

Interface Summary
DoubleArray | Provides a standard interface for double arrays.
Incrementor.MaxCountExceededCallback | Defines a method to be called at counter exhaustion.
IterationListener | The listener interface for receiving events occurring in an iterative algorithm.
MathArrays.Function | Real-valued function that operate on an array or a part of it.
NumberTransformer | Subclasses implementing this interface can transform Objects to doubles.

Class Summary
ArithmeticUtils | Some useful, arithmetics related, additions to the built-in functions in `Math`.
BigReal | Arbitrary precision decimal number.
BigRealField | Representation of real numbers with arbitrary precision field.
CompositeFormat | Base class for formatters of composite objects (complex numbers, vectors ...).
ContinuedFraction | Provides a generic means to evaluate continued fractions.
Decimal64 | This class wraps a `double` value in an object.
Decimal64Field | The field of double precision floating-point numbers.
DefaultTransformer | A Default NumberTransformer for java.lang.Numbers and Numeric Strings.
FastMath | Faster, more accurate, portable alternative to `Math` and `StrictMath` for large scale computation.
Incrementor | Utility that increments a counter until a maximum is reached, at which point, the instance will by default throw a `MaxCountExceededException`.
IterationEvent | The root class from which all events occurring while running an `IterationManager` should be derived.
IterationManager | This abstract class provides a general framework for managing iterative algorithms.
MathArrays | Arrays utilities.
MathUtils | Miscellaneous utility functions.
MultidimensionalCounter | Converter between unidimensional storage structure and multidimensional conceptual structure.
OpenIntToDoubleHashMap | Open addressed map from int to double.
OpenIntToFieldHashMap<T extends FieldElement<T>> | Open addressed map from int to FieldElement.
Pair<K,V> | Generic pair.
Precision | Utilities for comparing numbers.
ResizableDoubleArray | A variable length `DoubleArray` implementation that automatically handles expanding and contracting its internal storage array as elements are added and removed.
TransformerMap | This TansformerMap automates the transformation of mixed object types.

Enum Summary
MathArrays.OrderDirection | Specification of ordering direction.
ResizableDoubleArray.ExpansionMode | Specification of expansion algorithm.

## Package org.apache.commons.math3.util Description

Convenience routines and common data structures used throughout the commons-math library.

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