# Number

In Halunke all numbers are rational. You write them as decimal numbers:

``````2
-3
2.12
``````

It can answer to the following messages:

## `+`

This adds two numbers.

Example:

``````(0.6 + 0.3) /* => 0.9 */
``````

## `-`

This subtracts two numbers.

Example:

``````(0.6 - 0.3) /* => 0.3 */
``````

## `/`

This divides two numbers.

Example:

``````(0.6 / 0.3) /* => 2 */
``````

## `*`

This multiplies two numbers.

Example:

``````(0.6 * 0.3) /* => 0.18 */
``````

## `**`

This performs exponation.

Example:

``````(0.6 ** 0.3) /* => 0.8579172004440949 */
``````

## `<`

This compares two numbers. It is true, if the first number is smaller than the second number. Otherwise, it is false.

Example:

``````(0.6 < 0.3) /* => false */
``````

## `>`

This compares two numbers. It is true, if the first number is greater than the second number. Otherwise, it is false.

Example:

``````(0.6 > 0.3) /* => true */
``````

## `=`

This compares two numbers. It is true, if the two numbers are equal. Otherwise, it is false.

Example:

``````(0.6 = 0.3) /* => false */
``````

## `to_boolean`

This returns true.

Example:

``````(0.6 to_boolean) /* => true */
``````

## `to_string`

This returns a string to represent the number in output.

Example:

``````(0.6 to_string) /* => "0.6" */
``````

## `inspect`

This returns a string to represent the number for debugging.

Example:

``````(0.6 inspect) /* => "0.6" */
``````