--- libaitsched/inc/defs.h	2023/02/23 17:13:01	1.17.10.1
+++ libaitsched/inc/defs.h	2023/02/25 15:40:48	1.17.10.2
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: defs.h,v 1.17.10.1 2023/02/23 17:13:01 misho Exp $
+* $Id: defs.h,v 1.17.10.2 2023/02/25 15:40:48 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -181,6 +181,22 @@ extern char sched_Error[];
 
 void sched_SetErr(int, char *, ...);
 
+
+static inline struct timespec *
+sched_timespecmin(struct timespec * __restrict spa, struct timespec * __restrict spb)
+{
+	assert(spa && spb);
+
+	if (sched_timespecisinf(spa))
+		return spb;
+	if (sched_timespecisinf(spb))
+		return spa;
+
+	if (spa->tv_sec == spb->tv_sec)
+		return (spa->tv_nsec < spb->tv_nsec) ? spa : spb;
+	else
+		return (spa->tv_sec < spb->tv_sec) ? spa : spb;
+}
 
 static inline void
 remove_task_from(sched_task_t * __restrict t, sched_queue_t * __restrict q)