[libc-commits] [libc] [libc][math] Add unit tests for raising excepts in nextafter (PR #73556)

[Nishant Mittal via libc-commits]

================
@@ -24,10 +24,10 @@
   LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT)
 
 #define ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected)                          \
-  ASSERT_FP_EQ_WITH_EXCEPTION(result, expected, FE_INEXACT | FE_UNDERFLOW)
+  ASSERT_FP_EQ_WITH_EXCEPTION(result, expected, (FE_INEXACT | FE_UNDERFLOW))
----------------
nishantwrp wrote:

This macro is defined something like 

```cpp
#define ASSERT_FP_EXCEPT(expected) do {
  // some code
  LIBC_NAMESPACE::fputil::test_except(FE_ALL_EXCEPT) & expected
} while(0)
```

Using `ASSERT_FP_EXCEPT(a | b)` generates something like `LIBC_NAMESPACE::fputil::test_except(FE_ALL_EXCEPT) & a | b` which is not expected. Instead we want `LIBC_NAMESPACE::fputil::test_except(FE_ALL_EXCEPT) & (a | b)`

https://github.com/llvm/llvm-project/pull/73556