Math Operations

The table below lists and describes valid Enrichment math operators. Math operations are processed before concatenation. Enrichment evaluates these expressions from left to right according to the indicated operator precedence. If a mathematical expression contains parentheses, Enrichment evaluates expressions within the parentheses first.

Table 1. Enrichment Math Operators
Operator	Description	Precedence
+	Addition	3
-	Subtraction	3
*	Multiplication	2
%	Integer Division—returns the integer result when one value is divided by another Note: When using integer division of variables in a rule file, at least one space must separate the % math operator from the variables. For example, `%%var1%%%var2` is incorrect, but `%%var1 %%%var2` (with space after `%%var1`) is correct.	2
#	Remainder—returns only the remainder when one value is divided by another	2
( and )	Open and close parentheses	1

You can nest parentheses as deeply as necessary, as long as every open parenthesis has a complementary closing parenthesis. The table below shows how the results of Enrichment math expressions can differ based on the evaluation order.

Table 2. Example of Evaluation Order
Expression	Result
(2 + 5) * 10 - 4 % 2	68
(2 + 5 * 10) - 4 % 2	50
2 + 5 * 10 - 4 % 2	50
2 + 5 * (10 - 4 % 2)	42
2 + (5 * 10 - 4) % 2	25
(2 + 5) * (10 - 4) % 2	21
2 + (5 * (10 - 4)) % 2	17
(2 + (5 * (10 - 4))) % 2	16