// Prepend singleton dimensions until DimensionCount equals newDimCount
/// <summary>
/// Pads to dim count.
/// </summary>
/// <param name="newDimCount">The new dim count.</param>
/// <returns>Tensor.</returns>
private NDArray PadToDimCount(int newDimCount)
{
var newSizes = Pad1Prepend(this.shape, newDimCount);
var newStrides = TensorDimensionHelpers.GetContiguousStride(newSizes);
Array.Copy(this.strides, 0, newStrides, newStrides.Length - this.strides.Length, this.strides.Length);
return(new NDArray(newSizes, newStrides, this.storage, this.storageOffset));
}
/// <summary>
/// Views the specified sizes.
/// </summary>
/// <param name="sizes">The sizes.</param>
/// <returns>Tensor.</returns>
/// <exception cref="InvalidOperationException">
/// Cannot use View on a non-contiguous tensor000
/// or
/// Output tensor must have the same number of elements as the input
/// </exception>
public NDArray View(params long[] sizes)
{
if (!this.IsContiguous())
{
throw new InvalidOperationException("Cannot use View on a non-contiguous tensor");
}
if (this.ElementCount() != TensorDimensionHelpers.ElementCount(sizes))
{
throw new InvalidOperationException("Output tensor must have the same number of elements as the input");
}
return(new NDArray(sizes, TensorDimensionHelpers.GetContiguousStride(sizes), this.storage, this.storageOffset));
}
/// <summary>
/// Construct a new tensor, using the given allocator to construct a storage. The new tensor
/// will be contiguous in memory. The tensor's elements will not be initialized.
/// </summary>
/// <param name="allocator"></param>
/// <param name="elementType"></param>
/// <param name="sizes"></param>
/// <summary>
/// Initializes a new instance of the <see cref="NDArray"/> class.
/// </summary>
/// <param name="allocator">The allocator.</param>
/// <param name="elementType">Type of the element.</param>
/// <param name="sizes">The sizes.</param>
public NDArray(IAllocator allocator, DType elementType, params long[] sizes)
: this(allocator, elementType, sizes, TensorDimensionHelpers.GetContiguousStride(sizes))
{
}