X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXUtil.pm;h=b04cf4905d87435c37e50568c99d48014450264c;hb=d74590246854a9aa8783b2548196153f4ad7c985;hp=f7e52c9a92cb727e8c5431c4f9cd4d2d63e3d5e7;hpb=29e86370c5f331ae3d2c6f85e7001a7d2e758137;p=spider.git

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index f7e52c9a..b04cf490 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 {
@@ -562,6 +572,7 @@ sub difft
 		$out .= sprintf ("%s${s}s", $adds?' ':'') if $s;
 		$out ||= sprintf ("%s0s", $adds?' ':'');
 	}
+	$out = '0s' unless length $out;
 	return $out;
 }