[libc-commits] [libc] [libc][math] Add cbrtbf16 math function (PR #180327)

[via libc-commits]

zimmermann6 wrote:

I get an error with the CORE-MATH test suite:
```
zimmerma at biscotte:~/svn/core-math$ CORE_MATH_STD_NAME=cbrtbf16 CORE_MATH_CHECK_STD=true LIBM=$L ./check.sh cbrt_bf16
Running exhaustive check in --rndn mode...
FAIL x=inf ref=inf y=0x0p+0
```

https://github.com/llvm/llvm-project/pull/180327