# Method sqrt()

- Method
**sqrt** `float`

**sqrt(**`float`

`f`

**)**

`int(0..)`

**sqrt(**`int(0..)`

`i`

**)**

`mixed`

**sqrt(**`object`

`o`

**)**- Description
Returns the square root of

`f`

, or in the integer case, the square root truncated to the closest lower integer. If the argument is an object, the lfun _sqrt in the object will be called.- See also