[libc-commits] [libc] [libc][math][c++23] Add expbf16 math function (PR #161919)

[via libc-commits]

zimmermann6 wrote:

I get a failure for x=Inf:
```
zimmerma at croissant:~/svn/core-math$ CORE_MATH_STD_NAME=expbf16 EXTRA_CFLAGS=-DCORE_MATH_UNDERFLOW_BEFORE CORE_MATH_CHECK_STD=true LIBM=$L ./check.sh exp_bf16
Running exhaustive check in --rndn mode...
FAIL x=inf ref=inf y=0x0p+0
```


https://github.com/llvm/llvm-project/pull/161919