Or

From Lazarus-ccr

Jump to: navigation, search

English (en) Suomi (fi)

Contents

[edit] Boolean operation

Or produces a value of true if some value is true and false if both of its operands are false.

[edit] Truth table

A B   A or B  
  false     false     false
  false   true   true
  true   false   true
  true   true   true


[edit] Bitwise operation

Bitwise or sets the bit to 1 if one corresponding bits in its operands are 1, and to 0 if they all are 0.

[edit] Set a bit 

 
function SetBit(const AValue, ABitNumber:integer):integer;
begin
   result := AValue or (1 shl ABitNumber);
end;
 

If you call SetBit(%1000,1) then get %1010 (%1000 = 8 and %1010 = 10). If you call SetBit(10,2) then get 14 (14 = %1110). If you call SetBit(10,1) then get 10.

[edit] Read more

Retrieved from "http://wiki.lazarus.freepascal.org/Or"