[libc][math][c23] Implement C23 floating point min and max functions

[lntue]

• The missing functions are: fmaximum, fminimum, fmaximum_mag, fminimum_mag, fmaximum_num, fminimum_num, fmaximum_mag_num, fminimum_mag_num.
• These functions are defined in C23 standard: sections 7.12.12.4 - 7.12.12.11 in https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf
• Need to support the following data types: float, double, long double, float128.

[llvmbot]

@llvm/issue-subscribers-libc

Author: None (lntue)

- The missing functions are: `fmaximum`, `fminimum`, `fmaximum_mag`, `fminimum_mag`, `fmaximum_num`, `fminimum_num`, `fmaximum_mag_num`, `fminimum_mag_num`. - These functions are defined in C23 standard: sections 7.12.12.4 - 7.12.12.11 in https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf - Need to support the following data types: float, double, long double, float128.

[llvmbot]

Hi!

This issue may be a good introductory issue for people new to working on LLVM. If you would like to work on this issue, your first steps are:

1. In the comments of the issue, request for it to be assigned to you.
2. Fix the issue locally.
3. Run the test suite locally. Remember that the subdirectories under test/ create fine-grained testing targets, so you can e.g. use make check-clang-ast to only run Clang's AST tests.
4. Create a Git commit.
5. Run git clang-format HEAD~1 to format your changes.
6. Open a pull request to the upstream repository on GitHub. Detailed instructions can be found in GitHub's documentation.

If you have any further questions about this issue, don't hesitate to ask via a comment in the thread below.

[llvmbot]

@llvm/issue-subscribers-good-first-issue

Author: None (lntue)

- The missing functions are: `fmaximum`, `fminimum`, `fmaximum_mag`, `fminimum_mag`, `fmaximum_num`, `fminimum_num`, `fmaximum_mag_num`, `fminimum_mag_num`. - These functions are defined in C23 standard: sections 7.12.12.4 - 7.12.12.11 in https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf - Need to support the following data types: float, double, long double, float128.

[Jobhdez]

can this issue be assigned to me please? thanks

[Jobhdez]

@lntue thanks. I started working on it today.

[deeptirajora]

please assign this issue to me ?

[Jobhdez]

please assign this issue to me ?

Hey this has been assigned to me already. I’m working on it right now.

[Jobhdez]

@lntue hello, hope all is well. I just want to let you know that I’m about to make the tests for my changes. I have written the library functions. I just need to test my code and then I’ll submit my pr. Thanks