Difference between revisions of "Shr"

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== See also ==
+
{{Logical operators}}
* [[And]]
 
* [[Boolean]]
 
 
* [[Const]]
 
* [[Const]]
 
* [[Function]]
 
* [[Function]]
 
* [[Integer]]
 
* [[Integer]]
* [[Odd]]
 
* [[Or]]
 
* [[Shl]]
 
* [[$Bitpacking]]
 
* [[Bit manipulation]]
 

Revision as of 22:38, 16 October 2020

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Back to Reserved words.


Overview

The reserved word Shift right (shr) performs a logical right bit-shift operation (opposite than shl).

Shr with signed types

Note: unlike the >> operator in the C language, the shr operator is a logical (not arithmetic) bit shift, even if the left operand is a signed integer. An implicit typecast and extension to a larger unsigned type may be performed before the shift operation. Check what the following program actually prints.

program ShrTest;
begin
  WriteLn(ShortInt(-3) shr 1);
end.

Is a bit set

function isBitSet(AValue, ABitNumber:integer):boolean;
begin
   result:=odd(AValue shr ABitNumber);
end;


navigation bar: Pascal logical operators
operators

and • or • not • xor
shl • shr
and_then (N/A)• or_else (N/A)

see also

{$boolEval} • Reference: § “boolean operators” • Reference: § “logical operators”