#define XBT_IN2(fmt,a,b) LOG3(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION, a,b)
#define XBT_IN3(fmt,a,b,c) LOG4(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION, a,b,c)
#define XBT_IN4(fmt,a,b,c,d) LOG5(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION, a,b,c,d)
#define XBT_IN2(fmt,a,b) LOG3(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION, a,b)
#define XBT_IN3(fmt,a,b,c) LOG4(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION, a,b,c)
#define XBT_IN4(fmt,a,b,c,d) LOG5(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION, a,b,c,d)