JCL Help:CountBitsCleared@Byte

 JCL Help: CountBitsCleared Function

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Summary

Returns the number of cleared bits in the supplied value.

Pascal

 function CountBitsCleared(X: Byte): Integer; overload;
function CountBitsCleared(X: Shortint): Integer; overload;
function CountBitsCleared(X: Smallint): Integer; overload;
function CountBitsCleared(X: Word): Integer; overload;
function CountBitsCleared(X: Integer): Integer; overload;
function CountBitsCleared(X: Cardinal): Integer; overload;
function CountBitsCleared(X: Int64): Integer; overload;
function CountBitsCleared(P: Pointer; Count: Cardinal): Cardinal; overload;

Parameters

Parameters	Description
X: Byte	The value for which to determine the number of bits that are cleared. This can be an Integer, Cardinal, Byte, Word or Int64.

Return Value

The number of cleared bits or 0 if no bits are cleared.

Description

CountBitsCleared returns the number of bits that are cleared (value 0) in the binary representation of the supplied Value. Note that signed integers are stored in two's complement form and therefore, for example, CountBitsCleared(Integer(-1)) will return 0!

See Also

BitsLowest BitsHighest

About

Unit

JclLogic

Donator

Robert Marquardt

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