Added control to prevent invalid low/high ranges

gaps.go

@@ -1,5 +1,7 @@
 package interval
 
+import "fmt"
+
 func (intvls *intervals) HasGaps() bool {
 	intvls.Gaps()
 	if intvls.GapsList != nil && len(intvls.GapsList) > 0 {
@@ -27,7 +29,11 @@ func (intvls *intervals) calculateGaps() []*Interval {
 	gapThreshold := intvls.MinLow
 	for _, intvl := range intvls.Intervals {
 		// convert if necessary exclusive low/high values into inclusive ones
-		low, high := intvls.getInclusives(intvl.Low, intvl.High)
+		low, high, err := intvls.getInclusives(intvl.Low, intvl.High)
+		if err != nil {
+			fmt.Printf("calculateGaps - unable to get inclusives: %v", err)
+			continue
+		}
 
 		// if the current Low is higher than the last maximal High, means that there is a gap so we add this gap to the list
 		if low > gapThreshold {