Logical Operators

And

[Ctrl] [Shift] 7

x y

Returns 1 if both x and y are non-zero (true). Returns 0 otherwise.

Or

[Ctrl] [Shift] 6

x y

Returns 1 if either x or y are non-zero (true). Returns 0 otherwise.

Exclusive or, xor

[Ctrl] [Shift] 5

x y

Returns 1 if either x or y, but not both, are non-zero (true). Returns 0 otherwise.

Not

[Ctrl] [Shift] 1

x

Returns 1 if x is zero (false). Returns 0 otherwise.

Operands:

• x and y are real or complex scalars.

Notes:

• A value of 0 is FALSE, any non-zero value is TRUE. You must follow the Boolean expression with an equal sign for evaluation (=) to get the result of this comparison.
• Logical operators treat any numeric value that is not 0 as true, including complex numbers.
• Both and and or first evaluate x; if x is found to be TRUE (non-zero) y is then evaluated for and, and vice-versa for or. This can have the effect of masking errors; for example, the following give different results:

  0 (2/0) = 0 (2/0 is never evaluated)
  (2/0) 0 = 0 gives an error (2/0 causes singularity error)

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