Use #ifndef instead of #if !defined

[stockfish] / src / movegen.h

diff --git a/src/movegen.h b/src/movegen.h
index 71e9ca039870d08a6ebb364144c7d122d02a791e..2a4cda90dffef0117e450fdbe1a7491103f30bb8 100644 (file)
--- a/src/movegen.h
+++ b/src/movegen.h
@@ -17,7 +17,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#if !defined(MOVEGEN_H_INCLUDED)
+#ifndef MOVEGEN_H_INCLUDED
 #define MOVEGEN_H_INCLUDED
 
 #include "types.h"
@@ -55,4 +55,4 @@ private:
   ExtMove *cur, *last;
 };
 
-#endif // !defined(MOVEGEN_H_INCLUDED)
+#endif // #ifndef MOVEGEN_H_INCLUDED