In mathematics, an operator is a symbol that expresses the operation to be performed. In LSL, operators perform simple “common-sense” operations on values. The assignment operators are special in that the left hand side of the operation must be a variable.
|Unary||Operators that act on one value||++, –, ~, !|
|Binary||Operators that act on two values.||+, -, *, /, %, +=, -=, *=, /=, %=, &&, ||, !, ==, !=, <=, <, >=, >|
|Boolean||Operators that work with TRUE and FALSE values.||&&, ||, !, ==, !=, <=, <, >=, >|
|Bitwise||Operators that work with bitfields||&, |, ~, ^, <<, >>|
|Assignment||Special operators that assign a value to a variable.||=, +=, -=, *=, /=, %=|
All operators in order of execution or precedence, from high to low:
|()  .||Parentheses, Square Brackets and Dot Operator|
|! ~ ++ --||NOT, One's Complement, Increment, Decrement|
|* / %||Multiply, Divide, Modulus (% is also Vector Cross)|
|+ -||Addition and Subtraction|
|<< >>||Left Shift, Right Shift|
|< <= > >=||Less Than, Less Than Or Equal To, Greater Than, Greater Than or Equal To|
|== !=||Comparison Equal, Comparison Not Equal|
|= += -= *= /= %=||Assignment|
Credit to: Lslwiki.net (not working) with changes made for brevity and clarity.