Square root function
| Name | Type | Opt | Description | 
|---|---|---|---|
| initial-value | int or float | opt | An optional argument specifies the value whose square root is to be output. | 
| bang | Outputs the currently stored square root value. | |
| int | input [int] | 
A given number will cause the object to output the square root of that number. A negative input has no real solution, so it causes an output of (Not a Number). | 
| float | input [float] | 
A given number will cause the object to output the square root of that number. A negative input has no real solution, so it causes an output of (Not a Number). | 
| Name | Description | 
|---|---|
| expr | Evaluate a mathematical expression |