public NDArray <T> arange(int start, int stop, int step = 1)
{
if (start > stop)
{
throw new Exception("parameters invalid");
}
switch (typeof(T).Name)
{
case "Int32":
{
var n = new NDArray <int>();
n.arange(stop, start, step);
return(n as NDArray <T>);
}
case "Double":
{
var n = new NDArray <double>();
n.arange(stop, start, step);
return(n as NDArray <T>);
}
default:
throw new NotImplementedException();
}
}