Xor

xor performs an exclusive logical 'or' between two boolean values.

Syntax

  EXP_NUM1 xor EXP_NUM2
  EXP_NUM1 ? EXP_NUM2

• EXP_NUM1 and EXP_NUM2 are two numeric values. Any value that is not null is considered as true, while any null value is considered as false.

Examples

CODECODE CODE 
   # Test : does I=1 and J<>2, or I<>1 and J=2 ?
   If I = 1 xor J = 2
     CONDITION_RESULT="the condition is true"
   Else
     CONDITION_RESULT="the condition is false"
   Endif

Description and comments

xor returns a boolean result that is 0 or 1, 0 being the value false and 1 to value true.
The result depends on the value of the following decision table:

Value of EXP_NUM1	Value of EXP_NUM2	Value of (EXP_NUM1 or EXP_NUM2)
false (0)	false (0)	0 (false)
false (0)	true (not equal to 0)	1 (true)
true (not equal to 0)	false (0)	1 (true)
true (not equal to 0)	true (not equal to 0)	0 (false)

Comments:

or can be abbreviated as ?.

Associated errors

Error	Description
10	Arguments are not numeric.

See also

and, or, not.