diff --git a/libm/src/s_signgam.c b/libm/src/s_signgam.c
new file mode 100644
index 0000000..d67d591
--- /dev/null
+++ b/libm/src/s_signgam.c
@@ -0,0 +1,3 @@
+#include "math.h"
+#include "math_private.h"
+int signgam = 0;