more consistent feature test macros in math tests

[libc-test] / src / math / y1f.c

diff --git a/src/math/y1f.c b/src/math/y1f.c
index 6c9ab8a..31d4485 100644 (file)
--- a/src/math/y1f.c
+++ b/src/math/y1f.c
@@ -1,5 +1,5 @@
+#define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"