TensorPrimitives.Dot 方法

参考

定义

命名空间:: System.Numerics.Tensors

程序集:: System.Numerics.Tensors.dll

包:: System.Numerics.Tensors v8.0.0

包:: System.Numerics.Tensors v9.0.0-rc.2.24473.5

重要

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重载

Dot(ReadOnlySpan<Single>, ReadOnlySpan<Single>)	计算包含单精度浮点数的两个张量的点积。
Dot<T>(ReadOnlySpan<T>, ReadOnlySpan<T>)	计算包含数字的两个张量的点积。

Dot(ReadOnlySpan<Single>, ReadOnlySpan<Single>)

Source:: TensorPrimitives.cs

Source:: TensorPrimitives.Single.cs

计算包含单精度浮点数的两个张量的点积。

public:
 static float Dot(ReadOnlySpan<float> x, ReadOnlySpan<float> y);

public static float Dot (ReadOnlySpan<float> x, ReadOnlySpan<float> y);

static member Dot : ReadOnlySpan<single> * ReadOnlySpan<single> -> single

Public Shared Function Dot (x As ReadOnlySpan(Of Single), y As ReadOnlySpan(Of Single)) As Single

参数

x: ReadOnlySpan<Single>

第一个张量，表示为范围。

y: ReadOnlySpan<Single>

第二个张量，表示为范围。

Single

点积。

例外

ArgumentException

x 的长度必须与 y的长度相同。

注解

此方法有效地计算了等效项： Span<float> products = ...; TensorPrimitives.Multiply(x, y, products); float result = TensorPrimitives.Sum(products); ，但不需要为中间产品提供额外的临时存储。它对应于 BLAS1定义的 dot 方法。

如果任一输入元素等于 NaN，则生成的值也是 NaN。

此方法可以调用基础 C 运行时，或使用特定于当前体系结构的说明。不同的操作系统或体系结构之间的确切结果可能有所不同。

适用于

Dot<T>(ReadOnlySpan<T>, ReadOnlySpan<T>)

Source:: TensorPrimitives.Dot.cs

计算包含数字的两个张量的点积。

public:
generic <typename T>
 where T : System::Numerics::IAdditionOperators<T, T, T>, System::Numerics::IAdditiveIdentity<T, T>, System::Numerics::IMultiplyOperators<T, T, T>, System::Numerics::IMultiplicativeIdentity<T, T> static T Dot(ReadOnlySpan<T> x, ReadOnlySpan<T> y);

public static T Dot<T> (ReadOnlySpan<T> x, ReadOnlySpan<T> y) where T : System.Numerics.IAdditionOperators<T,T,T>, System.Numerics.IAdditiveIdentity<T,T>, System.Numerics.IMultiplyOperators<T,T,T>, System.Numerics.IMultiplicativeIdentity<T,T>;

static member Dot : ReadOnlySpan<'T (requires 'T :> System.Numerics.IAdditionOperators<'T, 'T, 'T> and 'T :> System.Numerics.IAdditiveIdentity<'T, 'T> and 'T :> System.Numerics.IMultiplyOperators<'T, 'T, 'T> and 'T :> System.Numerics.IMultiplicativeIdentity<'T, 'T>)> * ReadOnlySpan<'T (requires 'T :> System.Numerics.IAdditionOperators<'T, 'T, 'T> and 'T :> System.Numerics.IAdditiveIdentity<'T, 'T> and 'T :> System.Numerics.IMultiplyOperators<'T, 'T, 'T> and 'T :> System.Numerics.IMultiplicativeIdentity<'T, 'T>)> -> 'T (requires 'T :> System.Numerics.IAdditionOperators<'T, 'T, 'T> and 'T :> System.Numerics.IAdditiveIdentity<'T, 'T> and 'T :> System.Numerics.IMultiplyOperators<'T, 'T, 'T> and 'T :> System.Numerics.IMultiplicativeIdentity<'T, 'T>)

Public Shared Function Dot(Of T As {IAdditionOperators(Of T, T, T), IAdditiveIdentity(Of T, T), IMultiplyOperators(Of T, T, T), IMultiplicativeIdentity(Of T, T)}) (x As ReadOnlySpan(Of T), y As ReadOnlySpan(Of T)) As T

类型参数

T

参数

x: ReadOnlySpan<T>