Operators

Operators are a compact way of specifying frequently used calculation operations like addition or multiplication. When multiple operators are used the order in which they are evaluated needs to be defined. The order can be explicitly specified by using parentheses. If there are no parentheses, the order is determined implicitly using the precedence of the operators. Higher precedence operators are evaluated first, followed by lower precedence. Within the same precedence group, operations are evaluated from left to right or from right to left depending on the operator.

Examples:

• a + b + c = (a + b) + c
• a + b * c = a + (b * c)
• - - a = -(-a)
• cond1? val1: cond2? val2: val3 = cond1? val1: (cond2? val2: val3)

The following table shows the precedence of operators. The operators on the first line have the highest precedence. Operators on the same line have the same precedence and the evaluation direction is specified as left-to-right or right-to-left.

Operators	Arguments	Evaluation
- ~ !	unary	Right-to-left
**	binary	Left-to-right
* / %	binary	Left-to-right
+ -	binary	Left-to-right
< > <= >= =	binary	Left-to-right
BIT_AND &	binary	Left-to-right
BIT_XOR ^	binary	Left-to-right
BIT_OR |	binary	Left-to-right
AND &&	binary	Left-to-right
XOR ^^	binary	Left-to-right
OR ||	binary	Left-to-right
?:	ternary	Right-to-left
,	binary	Left-to-right

For details of the operators, see the toolbox in the calculated signals editor.