Mathematics
Some often used mathematical functions
| round() | round a decimal to an integer value following the mathematical rules |
| floor() | round down decimal values to the next lower integer |
| ceil() | round up decimal values to the next higher integer |
| abs() | returns the absolute value of the given number |
| sgn() | returns the sign of a number; 1 for positives, -1 for negative, 0 for 0 |