SystemEx.Hash.WeinbergHash Class Reference

Inheritance diagram for SystemEx.Hash.WeinbergHash:

Collaboration diagram for SystemEx.Hash.WeinbergHash:

Public Member Functions
	WeinbergHash (Endian endian)
	Craate a new instance.
Hash32	Compute (FixedVector< byte > input, uint seed)
	Computes the Weinberg hash of the given input.
Hash64	ComputeLong (FixedVector< byte > input, ulong seed)
	Computes the Weinberg hash of the given input.

Constructor & Destructor Documentation

WeinbergHash()

SystemEx.Hash.WeinbergHash.WeinbergHash

(

Endian

endian

)

Craate a new instance.

Parameters

endian

The suing endian for creating a hash

                                              {
            m_endian = endian;
        }

Member Function Documentation

Compute()

Hash32 SystemEx.Hash.WeinbergHash.Compute	(	FixedVector< byte >	input,
		uint	seed )

Computes the Weinberg hash of the given input.

Parameters

input	The input data to hash.
seed	The seed value for the hash computation.

Returns

The computed Weinberg hash as a 32-bit value.

Implements SystemEx.Hash.IHash.

                                                                     {
            uint hash = seed;
            uint g;
 
            for ( int i = 0 ; i < input.Count ; i++ ) {
                hash = (hash << 4) + input[i];
                g = hash & 0xF0000000u;
 
                if ( g != 0 )
                    hash ^= (g >> 24) ^ g;
            }
 
            hash ^= (hash >> 16);
            return new Hash32(hash);
        }

ComputeLong()

Hash64 SystemEx.Hash.WeinbergHash.ComputeLong	(	FixedVector< byte >	input,
		ulong	seed )

Computes the Weinberg hash of the given input.

Parameters

input	The input data to hash.
seed	The seed value for the hash computation.

Returns

The computed Weinberg hash as a 64-bit value.

Implements SystemEx.Hash.IHash.

                                                                         {
            ulong hash = seed;
            ulong g;
 
            for ( int i = 0 ; i < input.Count ; i++ ) {
                hash = (hash << 4) + input[i];
                g = hash & 0xF000000000000000ul;
 
                if ( g != 0 )
                    hash ^= (g >> 56) ^ g;
            }
 
            hash ^= (hash >> 32);
            return new Hash64(hash);
        }

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The documentation for this class was generated from the following file:

• WeinbergHash.cs