move cstdlib inclusion under __SPIR__

jinge90 · jinge90 · commit 375416da44bf · 2021-03-04T11:39:14.000+08:00
Signed-off-by: gejin &lt;ge.jin@intel.com&gt;
diff --git a/libdevice/device_math.h b/libdevice/device_math.h
@@ -10,8 +10,8 @@
 #define __LIBDEVICE_DEVICE_MATH_H__
 
 #include "device.h"
-#include <cstdlib>
 #ifdef __SPIR__
+#include <cstdlib>
 
 DEVICE_EXTERN_C
 div_t __devicelib_div(int x, int y);
