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# Symbols and formulas you can use in posts

In the parameters and formulas of your [posts](https://support.robaws.com/en/article/what-you-can-do-with-parameters-in-your-posts-e2ob35/) you can use the **symbols**, **references** and **mathematical formulas** below.


| **Symbol** | **Explanation** |
| **+** | Adding 2 values. |
| **-** | Subtracting 2 values. |
| ***** | Multiplying 2 values. |
| **/** | Dividing 2 values. |
| **%** | Modulus. |
| **==** | Is equal to. |
| **!=** | Is not equal to. |
| **>** | Is greater than. |
| **<** | Is less than. |
| **>=** | Is greater than or equal to. |
| **<=** | Is less than or equal to. |
| **&&** | and |
| **II** | or |
| **!** | not |


| **Reference** | **Explanation** | **Example** |
| Q | Reference to the quantity that you fill in for this post in the quotation | Q < 50 ? 1 : 0 |
| DISTANCE_KM | Reference to the 'kilometers' field on the quotation | DISTANCE_KM > 50 ? 1 : 0 |


| **Mathematical formula** | **Explanation** | **Example** |
| Math.round( x ) | Rounding a number to the higher or the lower integer. | Math.round(16,14). ->  value = 16 |
| Math.floor( x ) | A number with decimal places is rounded down to the lowest integer. | Math.floor(7,35) ->  value = 7 |
| Math.ceil( x ) | A number with decimal places is rounded up to the highest integer. | Math.ceil(7,35) -> value = 8 |
| Math.max(x;y;x) | The highest value in the series is shown. | Math.max(2;6;10;3;1;9) -> value = 10 |
| Math.PI | Pi. | Math.PI*2  -> value = 6,28 (pi *2) |
| Math.pow(x;y) | Exponentiation. | Math.pow(2;5). ->  value = 32 (2 to the power of 5). |
| Math.sqrt( x ) | Square root. | Math.sqrt(16) -> value = 4 (square root of 16). |
| Math.abs( x ) | Absolute value (= positive value) | Math.abs(-3) -> value = 3 |
| Math.sinh( x ) | Hyperbolic sine. |  |
| Math.cos( x ) | Cosine. |  |
| Math.tan( x ) | Tangent. |  |
| Math.log( x ) | Logarithm. |  |