[libc] [llvm] [libc][math][c23] Add fmaf16 C23 math function. (PR #130757)

[via llvm-commits]

================
@@ -3562,6 +3562,18 @@ add_fp_unittest(
     libc.src.__support.macros.properties.types
 )
 
+add_fp_unittest(
+  fmaf16_test
+  SUITE
+    libc-math-smoke-tests
+  SRCS
+    fmaf16_test.cpp
+  HDRS
+    FmaTest.h
+  DEPENDS
+    libc.src.math.fmaf16
+)
----------------
overmighty wrote:

```suggestion
  DEPENDS
    libc.src.math.fmaf16
    libc.src.__support.cpp.type_traits
    libc.src.__support.FPUtil.cast
    libc.src.__support.macros.properties.types
)
```

The other targets FMA smoke test targets are missing some of these dependencies. Maybe there should be separate targets for these shared test headers so that we don't have to copy-paste the same dependencies several times.

https://github.com/llvm/llvm-project/pull/130757