C# Class System.Xml.Bits

Contains static utility methods used to manipulate bits in a word.

显示文件 Open project: gbarnett/shared-source-cli-2.0 Class Usage Examples

Public Methods

Method	Description
ClearLeast ( uint num ) : uint	Clear the least significant bit that is set and return the result.
Count ( uint num ) : int	Returns the number of 1 bits in an unsigned integer. Counts bits by divide-and-conquer method, first computing 16 2-bit counts, then 8 4-bit counts, then 4 8-bit counts, then 2 16-bit counts, and finally 1 32-bit count.
ExactlyOne ( uint num ) : bool	Returns true if the unsigned integer has exactly one bit set.
LeastPosition ( uint num ) : int	Compute the 1-based position of the least sigificant bit that is set, and return it (return 0 if no bits are set). (e.g. 0x1001100 will return 3, since the 3rd bit is set).
MoreThanOne ( uint num ) : bool	Returns true if the unsigned integer has more than one bit set.

Method Details

ClearLeast() public static method

Clear the least significant bit that is set and return the result.

public static ClearLeast ( uint num ) : uint
num	uint
return	uint

Count() public static method

Returns the number of 1 bits in an unsigned integer. Counts bits by divide-and-conquer method, first computing 16 2-bit counts, then 8 4-bit counts, then 4 8-bit counts, then 2 16-bit counts, and finally 1 32-bit count.

public static Count ( uint num ) : int
num	uint
return	int

ExactlyOne() public static method

Returns true if the unsigned integer has exactly one bit set.

public static ExactlyOne ( uint num ) : bool
num	uint
return	bool

LeastPosition() public static method

Compute the 1-based position of the least sigificant bit that is set, and return it (return 0 if no bits are set). (e.g. 0x1001100 will return 3, since the 3rd bit is set).

public static LeastPosition ( uint num ) : int
num	uint
return	int

MoreThanOne() public static method

Returns true if the unsigned integer has more than one bit set.

public static MoreThanOne ( uint num ) : bool
num	uint
return	bool