mathjs/docs/reference/functions/unaryPlus.md

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

# Function unaryPlus

Unary plus operation.
Boolean values and strings will be converted to a number, numeric values will be returned as is.

For matrices, the function is evaluated element wise.


## Syntax

```js
math.unaryPlus(x)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x` | Number | BigNumber | Boolean | String | Complex | Unit | Array | Matrix | null |  Input value

### Returns

Type | Description
---- | -----------
Number | BigNumber | Complex | Unit | Array | Matrix |  Returns the input value when numeric, converts to a number when input is non-numeric.


## Examples

```js
math.unaryPlus(3.5);      // returns 3.5
math.unaryPlus(1);     // returns 1
```


## See also

[unaryMinus](unaryMinus.md),
[add](add.md),
[subtract](subtract.md)


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