[committed] libstdc++: Fix preprocessor check for bfloat16_t in <numbers> [PR126849]

[Jonathan Wakely]

libstdc++-v3/ChangeLog:

	PR libstdc++/126849
	* include/std/numbers: Fix preprocessor check for
	std::bfloat16_t support.
---

Tested x86_64-linux. Pushed to trunk.

Backports to follow.

 libstdc++-v3/include/std/numbers | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/std/numbers b/libstdc++-v3/include/std/numbers
index 65cd9d041478..882b58e71aa8 100644
--- a/libstdc++-v3/include/std/numbers
+++ b/libstdc++-v3/include/std/numbers
@@ -222,7 +222,7 @@ __glibcxx_numbers (_Float64, F64);
 __glibcxx_numbers (_Float128, F128);
 #endif
 
-#ifdef __STDCPP_BFLOAT128_T__
+#ifdef __STDCPP_BFLOAT16_T__
 __glibcxx_numbers (__gnu_cxx::__bfloat16_t, BF16);
 #endif
 
-- 
2.55.0