/// <summary>
/// Gets the identity matrix which has the specified dimension.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="n"></param>
/// <returns></returns>
public static NdArray <T> Identity <T>(int n)
{
var array = NdArray.CreateMutable(new T[n, n]);
for (var i = 0; i < n; ++i)
{
array[i, i] = ValueTrait.One <T>();
}
return(array.MoveToImmutable());
}
public static Vector <T> GetVector <T>()
where T : unmanaged
{
Span <T> span = stackalloc T[Vector <T> .Count];
var x = ValueTrait.UnaryNegate(ValueTrait.One <T>());
for (var i = 0; i < Vector <T> .Count; ++i)
{
span[i] = x;
x = ValueTrait.Increment(x);
}
return(new Vector <T>(span));
}