[libc-commits] [libc] [llvm] [libc][math] Implement single-precision erfcf (PR #190061)

[via libc-commits]

AnonMiraj wrote:

```
-- CORE-MATH reciprocal throughput --
[####################] 100 %
Ntrial = 20 ; Min = 59.143 + 35.993 clc/call; Median-Min = 39.782 clc/call; Max = 127.545 clc/call;
-- System LIBC reciprocal throughput --
[####################] 100 %
Ntrial = 20 ; Min = 82.642 + 47.285 clc/call; Median-Min = 44.017 clc/call; Max = 165.707 clc/call;
```
interesting results after removing the exp() call 

https://github.com/llvm/llvm-project/pull/190061