(Re)move paragraph(s) about the differences with the C interface in the math module?

[Nodd]

Documentation

The question is about these paragraphs, that are duplicated after the doc refactoring PR (one for modf and one for frexp):

Note that :func:`modf` has a different call/return pattern
than its C equivalents: it takes a single argument and return a pair of
values, rather than returning its second return value through an 'output
parameter' (there is no such thing in Python).

They should be either removed or moved to their corresponding function documentation.

The issue was raised in 2 pull request comments:

• Doc: Reorganize math module documentation #126337 (comment)
• Doc: Reorganize math module documentation #126337 (comment)

Note that the corresponding PR is not merged yet.

[ZeroIntensity]

cc @skirpichev

Edit: nevermind, I didn't see that you already looked at the PRs.

[Nodd]

I moved the notes next to their respective functions for now.