get-universal-time-ms added

ml_date.cpp

@@ -2,6 +2,7 @@
 #include "ml_date.h"
 #include <cstring>
 #include <stdexcept>
+#include <chrono>
 
 long now() {	// get-universal-time
 	time_t t = std::time(nullptr);
@@ -10,6 +11,13 @@ long now() {	// get-universal-time
 	return now;
 }
 
+long now_ms() {	// get-universal-time-ms
+	using namespace std::chrono;
+	milliseconds ms = duration_cast< milliseconds >(system_clock::now().time_since_epoch());
+
+	return ms.count();
+}
+
 long get_gmt_localtime_offset() {
 	std::time_t current_time;
 	std::time(&current_time);