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2 changes: 1 addition & 1 deletion eng/resolveContract.targets
Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@
<PropertyGroup>
<GenAPIExcludeAttributesList>$(RepositoryEngineeringDir)DefaultGenApiDocIds.txt</GenAPIExcludeAttributesList>
<GenAPIHeaderFile>$(RepositoryEngineeringDir)LicenseHeader.txt</GenAPIHeaderFile>
<GenAPITargetPath>$([MSBuild]::NormalizePath('$(MSBuildProjectDirectory)', '..', 'ref', '$(AssemblyName).cs'))</GenAPITargetPath>
<GenAPITargetPath Condition="'$(GenAPITargetPath)' == ''">$([MSBuild]::NormalizePath('$(MSBuildProjectDirectory)', '..', 'ref', '$(AssemblyName).cs'))</GenAPITargetPath>
<GenAPILangVersion Condition="'$(LangVersion)' != ''">$(LangVersion)</GenAPILangVersion>
<ProjectForGenAPIDocIdGeneration Condition="'$(ProjectForGenAPIDocIdGeneration)' == ''">$(CoreLibProject)</ProjectForGenAPIDocIdGeneration>
</PropertyGroup>
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@
<PropertyGroup>
<TargetFrameworks>$(NetCoreAppCurrent);$(NetCoreAppPrevious);$(NetCoreAppMinimum);netstandard2.0;$(NetFrameworkMinimum)</TargetFrameworks>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
<!-- SYSLIB5001: Tensor<T> and related APIs in System.Numerics.Tensors are experimental in .NET 9 -->
<NoWarn>$(NoWarn);SYSLIB5001</NoWarn>
</PropertyGroup>

<ItemGroup>
Expand All @@ -21,4 +23,4 @@
<PackageReference Include="System.Memory" Version="$(SystemMemoryVersion)" />
</ItemGroup>

</Project>
</Project>
Original file line number Diff line number Diff line change
Expand Up @@ -11,4 +11,20 @@ public static partial class TensorPrimitives
public static void ConvertToIntegerNative<TFrom, TTo>(System.ReadOnlySpan<TFrom> source, System.Span<TTo> destination) where TFrom : System.Numerics.IFloatingPoint<TFrom> where TTo : System.Numerics.IBinaryInteger<TTo> { }
public static void ConvertToInteger<TFrom, TTo>(System.ReadOnlySpan<TFrom> source, System.Span<TTo> destination) where TFrom : System.Numerics.IFloatingPoint<TFrom> where TTo : System.Numerics.IBinaryInteger<TTo> { }
}
public readonly ref partial struct ReadOnlyTensorDimensionSpan<T>
{
public ref partial struct Enumerator : System.Collections.Generic.IEnumerator<System.Numerics.Tensors.ReadOnlyTensorSpan<T>>, System.Collections.IEnumerator, System.IDisposable
{
readonly object? System.Collections.IEnumerator.Current { get { throw null; } }
void System.IDisposable.Dispose() { }
}
}
public readonly ref partial struct TensorDimensionSpan<T>
{
public ref partial struct Enumerator : System.Collections.Generic.IEnumerator<System.Numerics.Tensors.TensorSpan<T>>, System.Collections.IEnumerator, System.IDisposable
{
readonly object? System.Collections.IEnumerator.Current { get { throw null; } }
void System.IDisposable.Dispose() { }
}
}
}

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278 changes: 27 additions & 251 deletions src/libraries/System.Numerics.Tensors/src/CompatibilitySuppressions.xml

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Original file line number Diff line number Diff line change
@@ -1,2 +1,49 @@
M:System.Numerics.Tensors.TensorPrimitives.ConvertToHalf(System.ReadOnlySpan{System.Single},System.Span{System.Half})
M:System.Numerics.Tensors.TensorPrimitives.ConvertToSingle(System.ReadOnlySpan{System.Half},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Abs(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Add(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Add(System.ReadOnlySpan{System.Single},System.Single,System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.AddMultiply(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.AddMultiply(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Single,System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.AddMultiply(System.ReadOnlySpan{System.Single},System.Single,System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Cosh(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.CosineSimilarity(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Distance(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Divide(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Divide(System.ReadOnlySpan{System.Single},System.Single,System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Dot(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Exp(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.IndexOfMax(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.IndexOfMaxMagnitude(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.IndexOfMin(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.IndexOfMinMagnitude(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Log(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Log2(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Max(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Max(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.MaxMagnitude(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.MaxMagnitude(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Min(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Min(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.MinMagnitude(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.MinMagnitude(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Multiply(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Multiply(System.ReadOnlySpan{System.Single},System.Single,System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.MultiplyAdd(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.MultiplyAdd(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Single,System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.MultiplyAdd(System.ReadOnlySpan{System.Single},System.Single,System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Negate(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Norm(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Product(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.ProductOfDifferences(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.ProductOfSums(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Sigmoid(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Sinh(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.SoftMax(System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Subtract(System.ReadOnlySpan{System.Single},System.ReadOnlySpan{System.Single},System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Subtract(System.ReadOnlySpan{System.Single},System.Single,System.Span{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Sum(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.SumOfMagnitudes(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.SumOfSquares(System.ReadOnlySpan{System.Single})
M:System.Numerics.Tensors.TensorPrimitives.Tanh(System.ReadOnlySpan{System.Single},System.Span{System.Single})

M:System.Numerics.Tensors.TensorPrimitives.ConvertToIntegerNative``2(System.ReadOnlySpan{``0},System.Span{``1})
M:System.Numerics.Tensors.TensorPrimitives.ConvertToInteger``2(System.ReadOnlySpan{``0},System.Span{``1})
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
<IsPackable>true</IsPackable>
<PackageDescription>Provides support for operating over tensors.</PackageDescription>
<GenAPIExcludeApiList>ReferenceAssemblyExclusions.txt</GenAPIExcludeApiList>
<GenAPITargetPath>$([MSBuild]::NormalizePath('$(MSBuildProjectDirectory)', '..', 'ref', '$(AssemblyName).netcore.cs'))</GenAPITargetPath>
<!-- SYSLIB5001: Tensor<T> and related APIs in System.Numerics.Tensors are experimental in .NET 9 -->
<NoWarn>$(NoWarn);SYSLIB5001</NoWarn>
</PropertyGroup>
Expand Down Expand Up @@ -36,9 +37,11 @@
<Compile Include="System\Numerics\Tensors\netcore\IReadOnlyTensor_1.cs" />
<Compile Include="System\Numerics\Tensors\netcore\ITensor.cs" />
<Compile Include="System\Numerics\Tensors\netcore\ITensor_1.cs" />
<Compile Include="System\Numerics\Tensors\netcore\ReadOnlyTensorDimensionSpan_1.cs" />
<Compile Include="System\Numerics\Tensors\netcore\ReadOnlyTensorSpan_1.cs" />
<Compile Include="System\Numerics\Tensors\netcore\Tensor.cs" />
<Compile Include="System\Numerics\Tensors\netcore\Tensor_1.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorDimensionSpan_1.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorOperation.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorPrimitives.Abs.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorPrimitives.Acos.cs" />
Expand Down Expand Up @@ -167,7 +170,7 @@
<Compile Include="System\Numerics\Tensors\netcore\TensorPrimitives.Truncate.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorPrimitives.Xor.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorShape.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorSpan.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorSpan_1.cs" />
<Compile Include="System\Numerics\Tensors\netcore\TensorSpanDebugView.cs" />
</ItemGroup>

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -62,6 +62,11 @@ public interface IReadOnlyTensor<TSelf, T> : IReadOnlyTensor, IEnumerable<T>
/// <remarks>This method copies all of the source tensor to <paramref name="destination" /> even if they overlap.</remarks>
void FlattenTo(scoped Span<T> destination);

/// <summary>Returns a span that can be used to access the flattened elements for a given dimension.</summary>
/// <param name="dimension">The dimension for which the span should be created.</param>
/// <returns>A span that can be used to access the flattened elements for a given dimension.</returns>
ReadOnlyTensorDimensionSpan<T> GetDimensionSpan(int dimension);

/// <summary>Returns a reference to an object of type <typeparamref name="T" /> that can be used for pinning.</summary>
/// <returns>A reference to the element of the tensor at index 0, or <c>null</c> if the tensor is empty.</returns>
/// <remarks>This method is intended to support .NET compilers and is not intended to be called by user code.</remarks>
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,9 @@ public interface ITensor<TSelf, T> : ITensor, IReadOnlyTensor<TSelf, T>
/// <inheritdoc cref="ITensor.Fill(object)" />
void Fill(T value);

/// <inheritdoc cref="IReadOnlyTensor{TSelf, T}.GetDimensionSpan(int)" />
new TensorDimensionSpan<T> GetDimensionSpan(int dimension);

/// <inheritdoc cref="IReadOnlyTensor{TSelf, T}.GetPinnableReference" />
new ref T GetPinnableReference();
}
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Original file line number Diff line number Diff line change
@@ -0,0 +1,109 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Collections;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace System.Numerics.Tensors
{
/// <summary>Represents the slices that exist within a dimension of a tensor span.</summary>
/// <typeparam name="T">The type of the elements within the tensor span.</typeparam>
public readonly ref struct ReadOnlyTensorDimensionSpan<T>
{
private readonly ReadOnlyTensorSpan<T> _tensor;
private readonly nint _length;
private readonly int _dimension;
private readonly TensorShape _sliceShape;

internal ReadOnlyTensorDimensionSpan(ReadOnlyTensorSpan<T> tensor, int dimension)
{
if ((uint)dimension >= tensor.Rank)
{
ThrowHelper.ThrowArgumentOutOfRangeException();
}
dimension += 1;

_tensor = tensor;
_length = TensorPrimitives.Product(tensor.Lengths[..dimension]);
_dimension = dimension;
_sliceShape = TensorShape.Create((dimension != tensor.Rank) ? tensor.Lengths[dimension..] : [1], tensor.Strides[dimension..]);
}

/// <summary>Gets the length of the tensor dimension span.</summary>
public nint Length => _length;

/// <summary>Gets the tensor span representing a slice of the tracked dimension using the specified index.</summary>
/// <param name="index">The index of the tensor span slice to retrieve within the tracked dimension.</param>
/// <returns>The tensor span representing a slice of the tracked dimension using <paramref name="index" />.</returns>
public ReadOnlyTensorSpan<T> this[nint index]
{
get
{
if ((nuint)index >= (nuint)_length)
{
ThrowHelper.ThrowArgumentOutOfRangeException();
}

nint linearOffset = _tensor._shape.GetLinearOffset(index, _dimension);
return new ReadOnlyTensorSpan<T>(ref Unsafe.Add(ref _tensor._reference, linearOffset), _sliceShape);
}
}

/// <summary>Gets an enumerator for the readonly tensor dimension span.</summary>
public Enumerator GetEnumerator() => new Enumerator(this);

/// <summary>Enumerates the spans of a tensor dimension span.</summary>
public ref struct Enumerator
#if NET9_0_OR_GREATER
: IEnumerator<ReadOnlyTensorSpan<T>>
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Should this implement other interfaces in older TFMs?

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What other interfaces would it implement?

#endif
{
private readonly ReadOnlyTensorDimensionSpan<T> _span;
private nint _index;

internal Enumerator(ReadOnlyTensorDimensionSpan<T> span)
{
_span = span;
_index = -1;
}

/// <summary>Gets the span at the current position of the enumerator.</summary>
public readonly ReadOnlyTensorSpan<T> Current => _span[_index];

/// <summary>Advances the enumerator to the next element of the tensor span.</summary>
public bool MoveNext()
{
nint index = _index + 1;

if (index < _span.Length)
{
_index = index;
return true;
}
return false;
}

/// <summary>Sets the enumerator to its initial position, which is before the first element in the tensor span.</summary>
public void Reset()
{
_index = -1;
}

#if NET9_0_OR_GREATER
//
// IDisposable
//

void IDisposable.Dispose() { }

//
// IEnumerator
//

readonly object? IEnumerator.Current => throw new NotSupportedException();
#endif
}
}
}
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ namespace System.Numerics.Tensors
/// Represents a contiguous region of arbitrary memory. Unlike arrays, it can point to either managed
/// or native memory, or to memory allocated on the stack. It is type-safe and memory-safe.
/// </summary>
/// <typeparam name="T">The type of the elements within the tensor span.</typeparam>
[DebuggerTypeProxy(typeof(TensorSpanDebugView<>))]
[DebuggerDisplay("{ToString(),raw}")]
[Experimental(Experimentals.TensorTDiagId, UrlFormat = Experimentals.SharedUrlFormat)]
Expand Down Expand Up @@ -382,6 +383,9 @@ public void FlattenTo(scoped Span<T> destination)
}
}

/// <inheritdoc cref="IReadOnlyTensor{TSelf, T}.GetDimensionSpan(int)" />
public ReadOnlyTensorDimensionSpan<T> GetDimensionSpan(int dimension) => new ReadOnlyTensorDimensionSpan<T>(this, dimension);

/// <summary>Gets an enumerator for the readonly tensor span.</summary>
public Enumerator GetEnumerator() => new Enumerator(this);

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -272,31 +272,14 @@ public static ref readonly TensorSpan<T> ConcatenateOnDimension<T>(int dimension
TensorOperation.Invoke<TensorOperation.CopyTo<T>, T, T>(slice, dstSpan);
dstSpan = dstSpan.Slice((int)slice.FlattenedLength);
}
hasMore = IncrementIndexes(ranges, dimension, destination.Lengths);
// We do dimension - 1 because we want to include the dimension we concatenated on.
hasMore = TensorShape.AdjustToNextIndex(ranges, dimension - 1, destination.Lengths);
}
rentedBuffer.Dispose();
}
return ref destination;
}

private static bool IncrementIndexes(Span<NRange> ranges, int dimension, ReadOnlySpan<nint> lengths)
{
NRange curRange = ranges[dimension - 1];
ranges[dimension - 1] = new NRange(curRange.Start.Value + 1, curRange.End.Value + 1);

for (int i = dimension - 1; i >= 0; i--)
{
if (ranges[i].Start.Value >= lengths[i])
{
ranges[i] = 0..1;
if (i == 0)
return false;
ranges[i - 1] = new NRange(ranges[i - 1].Start.Value + 1, ranges[i - 1].End.Value + 1);
}
}
return true;
}

private static nint CalculateCopyLength(ReadOnlySpan<nint> lengths, int startingAxis)
{
// When starting axis is -1 we want all the data at once same as if starting axis is 0
Expand Down
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