round function:

If the argument is numeric, return it's rounded.

Examples:

• running: (round 10.3) will give: 10

• running: (round -10.3) will give: -10

• running: (round -10) will give: -10

• running: (round -10.5) will give: -11

• running: (round 10.5) will give: 11

• running: (round [0]) will return nothing