Remove outdated statement from math about C standard

[hugovk]

The PEP 791 draft says:

The math documentation says: “This module provides access to the mathematical functions defined by the C standard.” But, over time the module was populated with functions that aren’t related to the C standard or floating-point arithmetics.

Let's start by removing this outdated sentence from the docs.

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📚 Documentation preview 📚: https://cpython-previews--134621.org.readthedocs.build/

[skirpichev]

“This module provides access to the mathematical functions defined by the C standard.”

Obviously, -1 to that.

There is nothing wrong with this sentence - the module does provide access to such functions (at least for most of them). Edit: It's just not exhaustive description of the module content.

[picnixz]

Now this sentence seems weird. What "functions"? I think we should say that provides access to mathematical functions defined by the C standard and others. Or we can use the same sentence as for math.h on https://cplusplus.com/reference/cmath/:

Header declares a set of functions to compute common mathematical operations and transformations:

[hugovk]

The "mathematical functions" in math that were just written in big letters :)

https://cpython-previews--134621.org.readthedocs.build/en/134621/library/math.html

Do you think it's not clear?

[picnixz]

I personally don't think it's clear because I don't see the title as being tied with the first sentence. Maybe it's because I'm not native, but even in French I wouldn't referred to something that I said in a title. I also like the fact that we have a brief sentence starting with "This module" or something like that (AFAICT, it's a common way to introduce modules)