[libc-commits] [libc] [libc][complex] Add cargf and carg functions to libc complex math (PR #204087)

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jinge90 wrote:

Hi, @lntue 
This PR aims to add cargf and carg function in libc and already add some test cases to cover special inputs. Could you take a look at the overall approach? If you don't have any objection or big concern, I will add more tests cases for precsion as well. 

Thanks very much.

https://github.com/llvm/llvm-project/pull/204087