How to call a class-specified overloaded version of a function without using an object instance as an argument

I have a class:

classdef fast_calc < handle
    properties
        value
    end
    
    methods
        function obj = fast_calc(x)
            obj.value = x;
        end
        
        function y = sin(obj)
            if isa(obj,'fast_calc')
                x = obj.value;
            else
                x = obj;
            end
            % Fast calculation of sin using a Taylor expansion:
            y = x - x.^3 / 6;
        end
    end
end

the function sin works fine on a fast_calc object:

>> myNum = fast_calc(pi/6);
>> sin(myNum)
ans =
    0.4997

However, I would like also to be to call it directly on a standard numeric variable, something like:

>> fast_calc.sin(pi/6)

but this returns an error

The class fast_calc has no Constant property or Static method named 'sin'.

I don't want to define 'sin' as a static method because then sin(myNum) will not automatically invoke the overloaded function.

Is there a solution which allows calling an overloaded method both automatically on an instance, and on other object types when explicitly requesitng it?

Answer 1

[per isakson]

"I don't want to define 'sin' as a static method because then sin(myNum) will not automatically invoke the overloaded function"

I have defined sin() as a Static method (attached) and here (R2018b) both ways of calling works

fast_calc.sin(pi/6)

ans = 0.4997

fc = fast_calc(pi/6);
fast_calc.sin( fc )

ans = 0.4997

Ok, that's not what you asked, but AFAIK it's what Matlab offers.

Answer 2

[royk]

thnaks.

indeed really what i wanted cause you cannot use the simple notation sin(fc) .

but thanks for clarifying that this is it as far as what Matlab offers