System.Numerics.Tensors Non-monotonic constructor errors

[soerenwolfers]

Description

new TensorSpan<double>(new double[j], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1}); 

throws a ArgumentException if j == 1 but not if j == 0 or j > 1.

Reproduction Steps

using System.Diagnostics.CodeAnalysis;
using System.Numerics.Tensors;

namespace ConsoleApp1;

public abstract class Program
{
	[Experimental("SYSLIB5001")]
	public static void Main()
	{
		new TensorSpan<double>(new double[0], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1});
		new TensorSpan<double>(new double[2], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1});
		new TensorSpan<double>(new double[1], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1}); 
	}
}

Expected behavior

Error when j <= 1

Actual behavior

Error if and only if j == 1

Regression?

No response

Known Workarounds

No response

Configuration

.NET8, Ubuntu22, x64

Other information

No response

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[michaelgsharp]

Ok, this should throw when j = 0 || j = 1, but not when j > 1. I'll fix the 0 case. As long as there is enough backing memory its ok if there is more backing memory than the lengths/span can actually access.