frexp implementation

[pillarxyz]

#10844

[nassimberrada]

@pillarxyz Looks mostly good, a couple comments:

• Running the tests locally throws the following error: TypeError: static_frexp() takes 1 positional argument but 2 positional arguments (and 1 keyword-only argument) were given, could you try to solve this ?
• At the level of numpy's backend, correct me if i'm wrong but I guess you don't need to add a conditional statement for the case where out=None if np.frexp can handle that case directly
  Let me know when you'd like me to give it another review, thanks !

[pillarxyz]

there is an error when I dont add the if out is None: numpy: frexp: 'out' must be a tuple of arrays

I think I added that to the type hints but I think I should specify that out must be a tuple in the tests

[pillarxyz]

TypeError: static_frexp() takes 1 positional argument but 2 positional arguments (and 1 keyword-only argument) were given

humm, I dont seem to get that error myself when I run the tests

[nassimberrada]

If you take a look at the intelligent tests you can see a falsifying example for the frexp function which shows the following error TypeError: 'out' must be a tuple of arrays which I think is due to the out argument not being tested. Maybe you could try adding with_out=True to the helpers.test_function

[pillarxyz]

this is exactly why I added handling for out

[pillarxyz]

I think I solved it by making (None, None) the default if out is not set

[nassimberrada]

Looks good to go, thanks !