X-Git-Url: http://dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXUtil.pm;h=7d9e63a97b89dde5c9e7cf4e90d36eda0a1cd169;hb=907be6e0c64e1e0c26ace93f8abeb54769e51765;hp=f7e52c9a92cb727e8c5431c4f9cd4d2d63e3d5e7;hpb=3b73a2dde8b378db6b56438699c5a1f233194dbf;p=spider.git

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index f7e52c9a..7d9e63a9 100644
--- a/perl/DXUtil.pm
+++ b/perl/DXUtil.pm
@@ -27,7 +27,7 @@ require Exporter;
              print_all_fields cltounix unpad is_callsign is_latlong
 			 is_qra is_freq is_digits is_pctext is_pcflag insertitem deleteitem
 			 is_prefix dd is_ipaddr $pi $d2r $r2d localdata localdata_mv
-			 diffms _diffms difft parraydifft is_ztime
+			 diffms _diffms _diffus difft parraydifft is_ztime
             );
 
 
@@ -514,6 +514,16 @@ sub _diffms
 	return $b - $a;
 }
 
+# and in microseconds
+sub _diffus
+{
+	my $ta = shift;
+	my $tb = shift || [gettimeofday];
+	my $a = int($ta->[0] * 1000000) + int($ta->[1]); 
+	my $b = int($tb->[0] * 1000000) + int($tb->[1]);
+	return $b - $a;
+}
+
 sub diffms
 {
 	my $call = shift;
@@ -539,7 +549,7 @@ sub difft
 	if (ref $b eq 'ARRAY') {
 		$t = $b->[1] - $b->[0];
 	} else {
-		if ($adds >= $b) {
+		if ($adds && $adds >= $b) {
 			$t = $adds - $b;
 			$adds = shift;
 		} else {