cannot expose some python special functions (float, pow, rpow, abs)

Exposing some special functions seems to be not working correctly.

The ones that doesnt work:

 _floor, __pow, __rpow, __abs_

the ones that work:

_str, __repr, __format_

The type is exposed in xml as follows:

<value-type name="TestNumType">
    <add-function signature="__float__()" return-type="double">
        <inject-code class="target" position="end">
            double cppResult = const_cast&lt;const ::TestNumType *&gt;(cppSelf)-&gt;to_double_shiboken();
            pyResult = Shiboken::Conversions::copyToPython(Shiboken::Conversions::PrimitiveTypeConverter&lt;double&gt;(), &amp;cppResult);
            if (PyErr_Occurred() || !pyResult) {
                Py_XDECREF(pyResult);
                return {};
            }
            return pyResult;
        </inject-code>
    </add-function>
</value-type>

this prints following error (runtime)
Traceback (most recent call last):
File "/media/data/devel/shiboken-test/bin/python/plugins/test_plugin/_init_.py", line 148, in onGenerateUi
print(f"as float: {float(TestNumType('1.16'))}")
^^^^^^^^^^^^^^^^^^^^^^
TypeError: float() argument must be a string or a real number, not 'TestApi.TestNumType'
 
it should be sufficient for the float() to work - following python class works correctly:

class TestPythonClass:
            def __float__(self):
                return 42.42

print(f"python class as float: {float(TestPythonClass())}")

str(), repr(), '{0:f}'.format(TestApi.TestNumType()) works correctly

where:

import math

float(), abs(), pow operator( a ** b) doesnt work - i am getting same error as in the _float_ function above.

is there something more that should be done? or is it simply bug?

i would also like to note that (str / repr / format) works even that i do expose them using modify function tag - for example:

<modify-function signature="repr_shiboken()const" rename="_repr_"/>