Class FNV1a<THash, TParameters>

Represents FNV-1a hash algorithm.

Inheritance
object
NonCryptographicHashAlgorithm
FNV1a<THash, TParameters>
FNV1a128
FNV1a32
FNV1a64
Implements
Inherited Members
Namespace: DotNext.IO.Hashing
Assembly: DotNext.dll
Syntax
public class FNV1a<THash, TParameters> : NonCryptographicHashAlgorithm, IResettable where THash : unmanaged, IBinaryNumber<THash> where TParameters : IFNV1aParameters<THash>
Type Parameters
Name Description
THash

The type representing hash value.
TParameters

The parameters of the algorithm.

Constructors

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FNV1a(bool)

Represents FNV-1a hash algorithm.

Declaration
public FNV1a(bool salted = false)
Parameters
Type Name Description
bool salted

true to include randomized salt data into hashing; false to use data from memory only.
See Also

Methods

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Append(ReadOnlySpan<byte>)

When overridden in a derived class, appends the contents of source to the data already processed for the current hash computation.

Declaration
public override sealed void Append(ReadOnlySpan<byte> source)
Parameters
Type Name Description
ReadOnlySpan<byte> source

The data to process.
Overrides
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Append(void*, nuint)

Appends the contents of unmanaged memory to the data already processed for the current hash computation.

Declaration
[CLSCompliant(false)]
public void Append(void* address, nuint length)
Parameters
Type Name Description
void* address

The address of the unmanaged memory.
nuint length

The length of the unmanaged memory block, in bytes.
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Append(THash)

Appends the value to the data already processed for the current hash computation.

Declaration
public void Append(THash value)
Parameters
Type Name Description
THash value

The value to be hashed.
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Append<T>(ReadOnlySpan<T>)

Appends the contents of source to the data already processed for the current hash computation.

Declaration
public void Append<T>(ReadOnlySpan<T> source) where T : unmanaged
Parameters
Type Name Description
ReadOnlySpan<T> source

The data to process.
Type Parameters
Name Description
T

The type of the span elements.
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GetCurrentHash()

Gets the current computed hash value without modifying accumulated state.

Declaration
public THash GetCurrentHash()
Returns
Type Description
THash

The hash value for the data already provided.
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GetCurrentHashCore(Span<byte>)

When overridden in a derived class, writes the computed hash value to destination without modifying accumulated state.

Declaration
protected override sealed void GetCurrentHashCore(Span<byte> destination)
Parameters
Type Name Description
Span<byte> destination

The buffer that receives the computed hash value.
Overrides
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Hash(void*, nuint, bool)

Computes hash code for the specified block of unmanaged memory.

Declaration
[CLSCompliant(false)]
public static THash Hash(void* address, nuint length, bool salted = false)
Parameters
Type Name Description
void* address

The address of the unmanaged memory.
nuint length

The length of the unmanaged memory block, in bytes.
bool salted

true to include randomized salt data into hashing; false to use data from memory only.
Returns
Type Description
THash

The computed FNV-1a hash.
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Hash(THash)

Computes a hash for a value of type THash.

Declaration
public static THash Hash(THash data)
Parameters
Type Name Description
THash data

The data to be hashed.
Returns
Type Description
THash

The computed FNV-1a hash.
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Hash<T>(ReadOnlySpan<T>, bool)

Computes hash code over the span of elements.

Declaration
public static THash Hash<T>(ReadOnlySpan<T> data, bool salted = false) where T : unmanaged
Parameters
Type Name Description
ReadOnlySpan<T> data

The data to be hashed.
bool salted

true to include randomized salt data into hashing; false to use data from memory only.
Returns
Type Description
THash

The computed FNV-1a hash.
Type Parameters
Name Description
T

The type of the elements.
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Hash<T, TIndex>(Func<T, TIndex, THash>, TIndex, T, bool)

Computes hash code over elements returned by vector accessor.

Declaration
public static THash Hash<T, TIndex>(Func<T, TIndex, THash> accessor, TIndex count, T arg, bool salted = false) where TIndex : IComparisonOperators<TIndex, TIndex, bool>, IAdditiveIdentity<TIndex, TIndex>, IIncrementOperators<TIndex>
Parameters
Type Name Description
Func<T, TIndex, THash> accessor

The delegate that provided access to the element of type THash at the given index.
TIndex count

The number of elements in the vector.
T arg

The argument to be passed to the accessor.
bool salted

true to include randomized salt data into hashing; false to use data from memory only.
Returns
Type Description
THash

The computed FNV-1a hash.
Type Parameters
Name Description
T

The type of the elements in the vector.
TIndex

The type that is used as identifier of the elements in the vector.
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Reset()

When overridden in a derived class, resets the hash computation to the initial state.

Declaration
public override sealed void Reset()
Overrides

Implements

Extension Methods

See Also