Texas Instruments TI-82 User Manual - Page 62
TEST LOGIC Boolean Operations
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TEST LOGIC (Boolean) Operations To display the TEST LOGIC menu, press y : ~. When you select from the menu, the name is copied to the cursor location. TEST LOGIC Menu TEST LOGIC True if: 1: and Both values are nonzero (true) 2: or At least one value is nonzero (true) 3: xor Only one value is zero (false) 4: not The value is zero (true) Boolean Operators Boolean operators are often used in programs to control program flow and in graphing to control the graph of a function over specific values. Values are interpreted as zero (false) or nonzero (true). and, or, xor and, or, and xor (exclusive or) return a value of 1 if a expression is true or 0 if the expression is false, according to the table below. valueA and valueB can be expressions. valueA and valueB valueA or valueB valueA xor valueB valueA valueB and or xor ƒ0 ƒ0 returns 1 1 0 ƒ0 0 returns 0 1 1 0 ƒ0 returns 0 1 1 0 0 returns 0 0 0 not not returns 1 if value (which can be an expression) is 0. not value Using Boolean Operations Boolean logic is often used with relational tests. In a program, the following instructions store 4 into C: 2-16 Math, Angle, and Test Operations
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