--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sw/sniff-rx/datetime.c	Tue Aug 22 06:16:44 2023 +0000
@@ -0,0 +1,30 @@
+/*
+ * Some date and time handling functions for simtrace3-sniff-rx.
+ */
+
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <time.h>
+
+extern FILE *main_outf;
+extern struct timeval curtime;
+
+struct tm *cur_tm;
+
+static struct tm last_tm;
+
+void
+current_date_time()
+{
+	cur_tm = gmtime(&curtime.tv_sec);
+	if (cur_tm->tm_year != last_tm.tm_year ||
+	    cur_tm->tm_mon != last_tm.tm_mon ||
+	    cur_tm->tm_mday != last_tm.tm_mday)
+		fprintf(main_outf, "%d-%02d-%02d (gmtime):\n",
+			cur_tm->tm_year + 1900, cur_tm->tm_mon + 1,
+			cur_tm->tm_mday);
+	bcopy(cur_tm, &last_tm, sizeof(struct tm));
+}