The NOT expression is processed first ... Using Parentheses to Control Order of Evaluation Even though SAS evaluates logical operators in a specific order, you can control the order of evaluation by ...

Boolean operators, which Excel calls logical functions, include AND, OR, NOT, and a new function called ... We’ll walk you through all four. Examples: =XOR(1+1=2, 2-1=2) returns TRUE because ...

The plus sign (+) and minus sign (-) can be used as prefix operators. The word NOT and its equivalent symbols are also prefix operators. The following are examples of prefix operators used with ...