Tensor.StdDev does not handle non-contiguous input #110772
Description
Description
Tensor.StdDev does not handle non-contiguous input.
The method uses
Reproduction Steps
using System.Numerics.Tensors;
// Create 4x4 matrix with upper-left 2x2 matrix
var t = Tensor.Create<double>([4, 4]);
t[[0, 0]] = 1;
t[[0, 1]] = 1;
t[[1, 0]] = 1;
t[[1, 1]] = 1;
// Take slice of upper left 2x2 matrix
var t1 = t.Slice([0..2, 0..2]); // This makes a copy so it is contiguous
var t2 = t.AsReadOnlyTensorSpan().Slice([0..2, 0..2]); // Refers to original span, i.e. non-cotiguous.
// Should print 0 (StdDev of all ones)
Console.WriteLine(Tensor.StdDev<double>(t1));
Console.WriteLine(Tensor.StdDev<double>(t2));Expected behavior
Both print statements should print 0.
Actual behavior
First print statement prints 0.
Second print throws: System.ArgumentException: 'Destination is too short. Arg_ParamName_Name'
Regression?
No response
Known Workarounds
No response
Configuration
.NET 9
Other information
No response