Multiplication (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 Multiplication<T>
```
Multiplication.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default boolean`	`isOne()`	Check if this is a neutral element of multiplication, i.e.
`T`	`multiply(T a)`	Binary multiplication.
`T`	`one()`	Identity element.
`T`	`reciprocal()`	Multiplicative inverse.

- Method Detail
  - multiply
```
T multiply(T a)
```
    Binary multiplication.
    
    Parameters:
    
    a - Element.
    
    Returns:
    
    this * a.
  - one
```
T one()
```
    Identity element.
    
    Returns:
    
    the field element such that for all a, one().multiply(a).equals(a) is true.
  - reciprocal
```
T reciprocal()
```
    Multiplicative inverse.
    
    Returns:
    
    this^-1.
  - isOne
```
default boolean isOne()
```
    Check if this is a neutral element of multiplication, i.e. this.multiply(a) returns a or an element representing the same value as a.
    The default implementation calls equals(one()). Implementations may want to employ more a efficient method. This may even be required if an implementation has multiple representations of one and its equals method differentiates between them.
    
    Returns:
    
    true if this is a neutral element of multiplication.
    
    Since:
    
    1.2
    
    See Also:
    
    one()