# Windward Equations Operators Reference

Here is the complete list of Windward equation operators.

Valid operands for these operators are:

• numbers
• Boolean values
• variable references (e.g. "\${VariableName}") whose values are numbers or Boolean values
• Windward functions that return a number or Boolean value
• other equations that return a number or Boolean value

When an equation is evaluated, the value of a variable is substituted for its reference.

The logical operators expecting a Boolean value treat NULL as false.

Operator Description
( Open parenthesis
) Close parenthesis
, Comma
* Multiplication
/ Division
div Division
% Modulus - divide the left-hand operand by the right-hand operand and return the remainder
mod Modulus - divide the left-hand operand by the right-hand operand and return the remainder
- Subtraction
= Assignment
== Comparison - if the two operands are equal return true; else return false
eq Equal
!= Not equal - return true if the operands are not equal; else return false
ne Not equal - return true if the operands are not equal; else return false
< Less than - return true if the left-hand operand is less than the right-hand operand; else return false
lt Less than - return true if the left-hand operand is less than the right-hand operand; else return false
> Greater than - return true if the left-hand operand is greater than the right-hand operand; else return false
gt Greater than - return true if the left-hand operand is greater than the right-hand operand; else return false
<= Less than or equal to - return true if the left-hand operand is less than or equal to the right-hand operand; else return false
le Less than or equal to - return true if the left-hand operand is less than or equal to the right-hand operand; else return false
>= Greater than or equal to - return true if the left-hand operand is greater than or equal to the right-hand operand; else return false
ge Greater than or equal to - return true if the left-hand operand is greater than or equal to the right-hand operand; else return false
&& Logical AND - return true if both operands are true, else return false
and Logical AND - return true if both operands are true, else return false
|| Logical OR - return true if either or both operands are true, else return false
or Logical OR - return true if either or both operands are true, else return false
! Logical NOT - return true if the operand is false; else return false
not Logical NOT - return true if the operand is false; else return false