Adding the following functions to the calculator
Example Usage
```calc
round(1.55) --> 2
round(1.55,1) --> 1.6
floor(1.55) --> 1
ceiling(1.44) --> 2
```
Adding the following functions to the calculator
Example Usage
```calc
round(1.55) --> 2
round(1.55,1) --> 1.6
floor(1.55) --> 1
ceiling(1.44) --> 2
```
For those that need a work around, the below functions seem to work
```calc
a=1.1
ceiling=a+1-(cos((a mod 1))-(cos((a mod 1)) mod 1))-(a mod 1)
floor=a-(a mod 1)
```