[libc-commits] [libc] [libc][math][c++23] Add next{after, down, toward, up}bf16 math functions (PR #153993)

[via libc-commits]

================
@@ -3787,6 +3813,19 @@ add_fp_unittest(
     libc.src.math.nextdownf128
 )
 
+add_fp_unittest(
+  nextdownbf16_test
+  SUITE
+    libc-math-smoke-tests
+  SRCS
+    nextdownbf16_test.cpp
+  HDRS
+    NextUpTest.h
----------------
overmighty wrote:

```suggestion
    NextDownTest.h
```

https://github.com/llvm/llvm-project/pull/153993