Calculator (Units of Measurement Reference Implementation 2.0.2 API)

java.lang.Object
- tech.units.indriya.internal.function.calc.Calculator

```
public class Calculator
extends Object
```
Provides arithmetic on Java Numbers utilizing a provided NumberSystem.

Since:

2.0

Author:

Andi Huber

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Calculator`	`abs()`	Calculates the absolute value of this `Calculator`´s accumulator, then stores the result in the accumulator.
`Calculator`	`add(Number number)`	Adds `number` to this `Calculator`´s accumulator, then stores the result in the accumulator.
`Calculator`	`divide(Number number)`	Divides this `Calculator`´s accumulator by `number`, then stores the result in the accumulator.
`Calculator`	`exp()`	Calculates Euler's constant taken to the power of this `Calculator`´s accumulator, then stores the result in the accumulator.
`protected static Calculator`	`getInstance()`	Returns a new instance of a `Calculator` initialized with the default `NumberSystem`, as set at `Calculus.currentNumberSystem()`
`boolean`	`isLessThanOne()`
`Calculator`	`load(Number number)`	Loads `number` into this `Calculator`´s accumulator.
`Calculator`	`log()`	Calculates the natural logarithm of this `Calculator`´s accumulator, then stores the result in the accumulator.
`Calculator`	`multiply(Number number)`	Multiplies `number` with this `Calculator`´s accumulator, then stores the result in the accumulator.
`Calculator`	`negate()`	Calculates the additive inverse value of this `Calculator`´s accumulator, then stores the result in the accumulator.
`static Calculator`	`of(Number number)`	Shortcut for `getDefault().load(number)`.
`Number`	`peek()`	Allows to 'peek' at this `Calculator`´s accumulator.
`Calculator`	`power(int exponent)`	Takes this `Calculator`´s accumulator to the integer power of `exponent`, then stores the result in the accumulator.
`Calculator`	`reciprocal()`	Calculates the multiplicative inverse value of this `Calculator`´s accumulator, then stores the result in the accumulator.
`Calculator`	`subtract(Number number)`	Subtracts `number` from this `Calculator`´s accumulator, then stores the result in the accumulator.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getInstance
```
protected static Calculator getInstance()
```
    Returns a new instance of a Calculator initialized with the default NumberSystem, as set at Calculus.currentNumberSystem()
    This implementation is *not* thread-safe, hence threads should not share instances of this.
    
    Returns:
    
    a Calculator initialized with the default NumberSystem
  - of
```
public static Calculator of(Number number)
```
    Shortcut for getDefault().load(number). See getInstance() and load(Number)
    
    Parameters:
    
    number -
    
    Returns:
    
    default Calculator with number loaded into its accumulator
  - load
```
public Calculator load(Number number)
```
    Loads number into this Calculator´s accumulator.
    
    Parameters:
    
    number -
    
    Returns:
    
    self
  - add
```
public Calculator add(Number number)
```
    Adds number to this Calculator´s accumulator, then stores the result in the accumulator.
    
    Parameters:
    
    number -
    
    Returns:
    
    self
  - subtract
```
public Calculator subtract(Number number)
```
    Subtracts number from this Calculator´s accumulator, then stores the result in the accumulator.
    
    Parameters:
    
    number -
    
    Returns:
    
    self
  - multiply
```
public Calculator multiply(Number number)
```
    Multiplies number with this Calculator´s accumulator, then stores the result in the accumulator.
    
    Parameters:
    
    number -
    
    Returns:
    
    self
  - divide
```
public Calculator divide(Number number)
```
    Divides this Calculator´s accumulator by number, then stores the result in the accumulator.
    
    Parameters:
    
    number -
    
    Returns:
    
    self
  - power
```
public Calculator power(int exponent)
```
    Takes this Calculator´s accumulator to the integer power of exponent, then stores the result in the accumulator.
    
    Parameters:
    
    exponent -
    
    Returns:
    
    self
  - abs
```
public Calculator abs()
```
    Calculates the absolute value of this Calculator´s accumulator, then stores the result in the accumulator.
    
    Returns:
    
    self
  - negate
```
public Calculator negate()
```
    Calculates the additive inverse value of this Calculator´s accumulator, then stores the result in the accumulator.
    
    Returns:
    
    self
  - reciprocal
```
public Calculator reciprocal()
```
    Calculates the multiplicative inverse value of this Calculator´s accumulator, then stores the result in the accumulator.
    
    Returns:
    
    self
  - exp
```
public Calculator exp()
```
    Calculates Euler's constant taken to the power of this Calculator´s accumulator, then stores the result in the accumulator.
    
    Returns:
    
    self
  - log
```
public Calculator log()
```
    Calculates the natural logarithm of this Calculator´s accumulator, then stores the result in the accumulator.
    
    Returns:
    
    self
  - peek
```
public Number peek()
```
    Allows to 'peek' at this Calculator´s accumulator. The Number returned is narrowed to best represent the numerical value w/o loss of precision within the NumberSystem as configured for this Calculator instance.
    
    Returns:
    
    a narrowed version of this Calculator´s accumulator
  - isLessThanOne
```
public boolean isLessThanOne()
```
    Returns:
    
    whether this Calculator´s accumulator is less than ONE

Class Calculator

Method Summary

Methods inherited from class java.lang.Object

Method Detail

getInstance

of

load

add

subtract

multiply

divide

power

abs

negate

reciprocal

exp

log

peek

isLessThanOne