2-26 Math, Angle, and Test Operations
8302MATH.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:12 PM Printed: 02/19/01 2:27
PM Page 26 of 26
To display the TEST LOGIC menu, press y ãTESTä ~.
This operator... Returns a 1 (true) if...
TEST LOGIC
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 (false).
Boolean operators are often used in programs to control
program flow and in graphing to control the graph of the
function over specific values. Values are interpreted as
zero (false) or nonzero (true).
and, or, and xor (exclusive or) return a value of 1 if an
expression is true or 0 if an expression is false, according
to the table below. valueA and valueB can be real
numbers, expressions, or lists.
valueA and valueB
valueA or valueB
valueA xor valueB
valueA valueB and or xor
ƒ0ƒ0 returns 110
ƒ0 0 returns 011
0ƒ0 returns 011
0 0 returns 000
not( returns 1 if value (which can be an expression) is 0.
not(value)
Boolean logic is often used with relational tests. In the
following program, the instructions store 4 into C.
TEST LOGIC (Boolean) OperationsTEST LOGIC
Menu
Boolean
Operators
and,
or,
xor
not(
Using Boolean
Operations