# double

Converts `A `into double precision type.

## Syntax

R = double(x)

## Inputs

- x
- Any valid scalar | vector | matrix.

## Outputs

- R
- Converted number.

## Example

Basic
example:

`R = double(2.3)`

`R = 2.3`

String example:

`double('test string')`

`R = [ 116 101 115 116 32 115 116 114 105 110 103 ]`

Complex
matrix:

`R = double([2,3,8.2i-3.2,-5.1i])`

`R = [ 2, 3, -3.2 + 8.2i, -5.1i]`

Complex
number:

`R = double(2i-9)`

`R = -9 + 2i`

## Comments

If a string is given, the string is converted into its ASCII value matrix. That matrix is then converted into double precision type.