printf function. Useful to debug the logging facilities themselves, or to not make source analysis tools mad */
//#define XBT_LOG_MAYDAY
-#ifndef _XBT_LOG_H_
-#define _XBT_LOG_H_
+#ifndef XBT_LOG_H
+#define XBT_LOG_H
#include "xbt/misc.h"
#include <stdarg.h>