# Function arg

Compute the argument of a complex value. If x = a + bi, the argument is computed as atan2(b, a).

    arg(x)

For matrices, the function is evaluated element wise.


### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x` | Number | Complex | Array | Matrix | Boolean | 

### Returns

Type | Description
---- | -----------
Number | Array | Matrix | res




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