[libc-commits] [libc] [libc][math] Fix double-rounding errors with denormal inputs for hypot function. (PR #208247)

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lntue wrote:

> the failure remains
> 
> ```
> $ ./check.sh hypot
> Running worst cases check in --rndn mode...
> Missing underflow exception for x,y=0x0.603e52daf0bfdp-1022,-0x0.a622d0a9a433bp-1022 (z=0x0.bffffb1b06483p-1022)
> ```

How do you build and on which target?  This pair of inputs does generate underflow exception on my side with the current head of the PR.

https://github.com/llvm/llvm-project/pull/208247