Package org.apache.commons.math4.util

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

Interface Summary

Interface	Description
DoubleArray	Provides a standard interface for double arrays.
Incrementor.MaxCountExceededCallback	Defines a method to be called at counter exhaustion.
IntegerSequence.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.
PivotingStrategyInterface	A strategy to pick a pivoting index of an array for doing partitioning.

Class Summary

Class	Description
BigReal	Arbitrary precision decimal number.
BigRealField	Representation of real numbers with arbitrary precision field.
CentralPivotingStrategy	A mid point strategy based on the average of begin and end indices.
CombinatoricsUtils	Combinatorial utilities.
CompositeFormat	Base class for formatters of composite objects (complex numbers, vectors ...).
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	Deprecated. Use IntegerSequence.Incrementor instead.
IntegerSequence	Provides a sequence of integers.
IntegerSequence.Incrementor	Utility that increments a counter until a maximum is reached, at which point, the instance will by default throw a MaxCountExceededException.
IntegerSequence.Range	Generates a sequence of integers.
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.
KthSelector	A Simple Kth selector implementation to pick up the Kth ordered element from a work array containing the input numbers.
MathArrays	Arrays utilities.
MathUtils	Miscellaneous utility functions.
MedianOf3PivotingStrategy	Classic median of 3 strategy given begin and end indices.
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.
RandomPivotingStrategy	A strategy of selecting random index between begin and end indices.
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

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