[libc-commits] [libc] [libc][math] Qualify fdim funtions to constexpr (PR #194137)

[Muhammad Bassiouni via libc-commits]

================
@@ -77,7 +78,8 @@ add_or_sub(InType x, InType y) {
     if (x_bits.is_inf()) {
       if (y_bits.is_inf()) {
         if (!is_effectively_add) {
-          raise_except_if_required(FE_INVALID);
+          if (!cpp::is_constant_evaluated())
+            raise_except_if_required(FE_INVALID);
----------------
bassiounix wrote:

Same as before

```suggestion
          raise_except_if_required(FE_INVALID);
```

https://github.com/llvm/llvm-project/pull/194137