JCL Help:BitsHighest@Byte

 JCL Help: BitsHighest Function

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Summary

Returns the highest bit set in the supplied value.

Pascal

 function BitsHighest(X: Byte): Integer; overload;
function BitsHighest(X: ShortInt): Integer; overload;
function BitsHighest(X: SmallInt): Integer; overload;
function BitsHighest(X: Word): Integer; overload;
function BitsHighest(X: Integer): Integer; overload;
function BitsHighest(X: Cardinal): Integer; overload;
function BitsHighest(X: Int64): Integer; overload;

Parameters

Parameters	Description
X: Byte	The value for which to return the highest set bit.

Return Value

The index of the highest bit set, or -1 if no bits are set.

Description

BitsHighest returns the index of the highest bit which is set in the supplied value. Note that bits are numbered right to left starting with 0. For example, BitsHighest(5) returns 2 (5 equals 00000101 in binary).

See Also

BitsLowest CountBitsSet

About

Unit

JclLogic

Donator

Michael Schnell

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