Merge pull request #258 from andrewjpage/div_zero_split_genes

catch divide by zero error
sanger-pathogens · Jul 6, 2016 · a25e378 · a25e378
2 parents 8db53d2 + 1c0a9a5
commit a25e378
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/dist.ini b/dist.ini
@@ -1,5 +1,5 @@
 name    = Bio-Roary
-version = 3.6.3
+version = 3.6.4
 author  = Andrew J. Page <[email protected]>
 license = GPL_3
 copyright_holder = Wellcome Trust Sanger Institute

diff --git a/lib/Bio/Roary/SplitGroups.pm b/lib/Bio/Roary/SplitGroups.pm
@@ -308,6 +308,10 @@ sub _shared_cgn_score {
 		next unless(defined($input_group));
 		$total_shared++ if($cgn2->{$input_group});
 	}
+	if( (scalar @{ $cgn1 }) == 0)
+	{
+	  return 0;
+  }
 	my $score = $total_shared/scalar @{ $cgn1 };
 	return $score;
 }