[libc-commits] [libc] [libc] Use `rint` builtin for rounding on the GPU (PR #98345)

[Joseph Huber via libc-commits]

jhuber6 wrote:

> > Godbolt link is wrong, pointing to sin. This is a directly legal instruction so less explanation is needed too
> 
> Might as well handle nearbyint and roundeven too

@lntue do we have utility functions for these? I was going to add `roundeven` because we forgot to add that previously.

https://github.com/llvm/llvm-project/pull/98345