[libc-commits] [libc] [libc][math] undef `iscanonical` before defining it using `LLVM_LIBC_FUNCTION` macro (PR #110865)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

> the macro definition of iscanonical is included somewhere

ah interesting find. Would be good to know more & get to the bottom of that.

https://github.com/llvm/llvm-project/pull/110865