add feature test macros to non-c99 math tests

[libc-test] / src / math / y0.c

diff --git a/src/math/y0.c b/src/math/y0.c
index d6a3364..adf1416 100644 (file)
--- a/src/math/y0.c
+++ b/src/math/y0.c
@@ -1,3 +1,5 @@
+#define _BSD_SOURCE 1
+#define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"