[libc] [llvm] [libc][c23][fenv] Implement fetestexceptflag (PR #87828)

[Nick Desaulniers via llvm-commits]

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@@ -1,4 +1,5 @@
-//===-- Unittests for fegetexceptflag and fesetexceptflag -----------------===//
+//===-- Unittests for fegetexceptflag, fesetexceptflag and ----------------===//
+//===-- fetestexceptflag --------------------------------------------------===//
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nickdesaulniers wrote:

Unittests for fe{get|set|test}exceptflag

https://github.com/llvm/llvm-project/pull/87828