llvm-project

e06b5e53 - [libc][math] Implement C23 half precision erfc function (#180930)

[libc][math] Implement C23 half precision erfc function (#180930) Add support for the half-precision complementary error function `erfcf16``, using a Sollya generated polynomial implementation with proper handling of special cases. Extend the MPFR utilities with erfc support to allow tests. closes: #180927