[libc][math][C23] Implement sinpif, cospif, tanpif functions for single precision.

[HendrikHuebner]

Defined here: https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf

• sinpif (7.12.4.12) [libc][math][c23] Implemented sinpif function correctly rounded for all rounding modes. #97149
• cospif (7.12.4.13) [libc][C23][math] Implement cospif function correctly rounded for all rounding modes #97464
• tanpif (7.12.4.14) [libc][math][c23] implement C23 math function tanpif #147192

[HendrikHuebner]

CC @lntue

[wsehjk]

Hi, Have the tanpi functions been implemented? If not, can you assign me to work on this?

[lntue]

Hi, Have the tanpi functions been implemented? If not, can you assign me to work on this?

Hi @wsehjk , tanpif is not implemented yet: https://libc.llvm.org/headers/math/index.html#higher-math-functions
Let me know if you have any problem with the implementation. Thanks,