Xor: what changed

Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.

Title: Xor

New		Line
1	+	Back to [[Reserved words]].
2	+
3	+	The xor [[Operator\|operator]] compares two [[Boolean\|boolean]] values, and returns true if and only if one of them is true.
4	+
5	+	# Boolean operation
6	+
7	+	Exclusive or (xor) results in a value of [[True\|true]] if and only if exactly one of the operands has a value of true.
8	+
9	+	## Truth table
10	+
11	+	\| A \| B \| A xor B \|
12	+	\|-----------\|-----------\|---------\|
13	+	\| false \| false \| false \|
14	+	\| false \| true \| true \|
15	+	\| true \| false \| true \|
16	+	\| true \| true \| false \|
17	+
18	+	# Bitwise operation
19	+
20	+	Bitwise xor sets the bit to 1 where the corresponding bits in its operands are different, and to 0 if they are the same.
21	+
22	+	Example:
23	+
24	+	` 0101'1010`\
25	+	`xor 0011'0100`\
26	+	`―――――――――――――`\
27	+	` 0110'1110`
28	+
29	+	## Toggle a bit
30	+
31	+	``` pascal
32	+	function ToggleBit(const AValue,ABitNumber:integer):integer;
33	+	begin
34	+	result := AValue xor 1 shl ABitNumber;
35	+	end;
36	+	```
37	+
38	+	If you call `ToggleBit(11,0)` then get `10`. If you call `ToggleBit(10,2)` then get `14`.
39	+
40	+	- [[Variable parameter\|XOR swap]]
41	+	- [[Const]]
42	+	- [[Function]]
43	+	- [[Integer]]
44	+
45	+	---
46	+	From the Free Pascal wiki, page "Xor", as it stood on 2021-09-01 after a change by Mozi, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).
47	+	Category: Code
48	+	Category: Operators