Addition (Apache Commons Numbers 1.2)

Type Parameters:

T - Type of elements.

All Known Subinterfaces:

NativeOperators<T>

All Known Implementing Classes:

BigFraction, DD, FP64, Fraction
```
public interface Addition<T>
```
Addition.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`T`	`add(T a)`	Binary addition.
`default boolean`	`isZero()`	Check if this is a neutral element of addition, i.e.
`T`	`negate()`	Additive inverse.
`T`	`zero()`	Identity element.

- Method Detail
  - add
```
T add(T a)
```
    Binary addition.
    
    Parameters:
    
    a - Element.
    
    Returns:
    
    this + a.
  - zero
```
T zero()
```
    Identity element.
    
    Returns:
    
    the field element such that for all a, zero().add(a).equals(a) is true.
  - negate
```
T negate()
```
    Additive inverse.
    
    Returns:
    
    -this.
  - isZero
```
default boolean isZero()
```
    Check if this is a neutral element of addition, i.e. this.add(a) returns a or an element representing the same value as a.
    The default implementation calls equals(zero()). Implementations may want to employ more a efficient method. This may even be required if an implementation has multiple representations of zero and its equals method differentiates between them.
    
    Returns:
    
    true if this is a neutral element of addition.
    
    Since:
    
    1.2
    
    See Also:
    
    zero()