Package org.apache.commons.numbers.field

Class AbstractField<T extends NativeOperators<T>>

java.lang.Object

org.apache.commons.numbers.field.AbstractField<T>

Type Parameters:

T - Type of the field elements.

All Implemented Interfaces:

Field<T>

Direct Known Subclasses:

BigFractionField, DDField, FP64Field, FractionField

public abstract class AbstractField<T extends NativeOperators<T>>
extends Object
implements Field<T>

Boiler-plate code for concrete implementations of Field.

Constructor Summary

Constructors

Constructor	Description
AbstractField()	Create an instance.

Method Summary

Modifier and Type	Method	Description
T	add(T a, T b)	Add the elements.
T	divide(T a, T b)	Divide the element a by b.
T	multiply(int n, T a)	Multiply the element a by a specified number of times n.
T	multiply(T a, T b)	Multiply the elements.
T	negate(T a)	Negate the element.
T	reciprocal(T a)	Return the reciprocal (multiplicative inverse).
T	subtract(T a, T b)	Subtract the element b from a.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.commons.numbers.field.Field

one, zero

Constructor Detail

AbstractField

public AbstractField()

Create an instance.

Method Detail

add

public T add(T a,
             T b)

Add the elements.

Specified by:

add in interface Field<T extends NativeOperators<T>>

Parameters:

a - Field element.

b - Field element.

Returns:

a + b.

subtract

public T subtract(T a,
                  T b)

Subtract the element b from a.

Specified by:

subtract in interface Field<T extends NativeOperators<T>>

Parameters:

a - Field element.

b - Field element.

Returns:

a - b.

negate

public T negate(T a)

Negate the element.

Specified by:

negate in interface Field<T extends NativeOperators<T>>

Parameters:

a - Field element.

Returns:

-a.

multiply

public T multiply(int n,
                  T a)

Multiply the element a by a specified number of times n.

Specified by:

multiply in interface Field<T extends NativeOperators<T>>

Parameters:

n - Number of times a must be added to itself.

a - Field element.

Returns:

n a.

multiply

public T multiply(T a,
                  T b)

Multiply the elements.

Specified by:

multiply in interface Field<T extends NativeOperators<T>>

Parameters:

a - Field element.

b - Field element.

Returns:

a * b.

divide

public T divide(T a,
                T b)

Divide the element a by b.

Specified by:

divide in interface Field<T extends NativeOperators<T>>

Parameters:

a - Field element.

b - Field element.

Returns:

a * b-1.

reciprocal

public T reciprocal(T a)

Return the reciprocal (multiplicative inverse).

Specified by:

reciprocal in interface Field<T extends NativeOperators<T>>

Parameters:

a - Field element.

Returns:

a-1.