I wanted to know if there is a way to parse and store c `long double`. I only found `PyFloat_FromDouble` and in the same page, `PyFloat_GetMax` returns: 
> Return the maximum representable finite float DBL_MAX as C double.

Meaning, there is no scope of `long double`. Can you please tell me how I can do something like `PyFloat_FromLongDouble`

You're correct that there's nothing in the C-API to handle a C `long double`. (Similarly, there's very little for C `float` values.)

You've added "ctypes" as a component, but in the message you're talking about the C-API. Can you clarify what you're doing? Are you writing C extensions for Python, or are you using ctypes?

Ohh ok, thanks for the info Mark. Any plans to add it in the future?

My bad, sorry, will change to C-API.

> Any plans to add it in the future?

It depends - it's not really clear to me what you're asking for.

If you just want to get a Python `float` from a C long double, then cast to double in the C code and then use `PyFloat_FromDouble`. Obviously that loses any extra precision that the C long double had.

If you're asking for Python to grow a new type of "float" with long double precision, that's a *much* bigger ask, and realistically it's not going to happen in the forseeable future.

I'm setting the Python version to 3.10 here: this is a request for a new feature, and as such it can't go into already-released Python versions.

Oh I see. Yeah my ask is particularly around support for long double precision in python. What I am trying to do is essentially attempt to speed up the comparison of NumPy scalars: https://github.com/numpy/numpy/pull/17970. 

We have support for float128 in NumPy, but when I was trying to cast it to a C variable, was having a hard time doing so without losing precision.

Please feel free to close the issue, hopefully will see long double support sometime in the future.

Oh apologies for changing the version, makes sense for 3.10. I had it opened before the change and sort of conflicted into taking my old preset 3.7 on the page

You immediate questions are answered.  Adding 128 bit floats to Python itself need a discussion on python-ideas and very likely a PEP.  Maybe a decade?