Merge pull request #558 from liuxuan30/RoundBeforeInt

Fix for rounding error at the edges

Charts/Classes/Charts/BarLineChartViewBase.swift

@@ -1708,7 +1708,7 @@ public class BarLineChartViewBase: ChartViewBase, BarLineScatterCandleBubbleChar
     {
         var pt = CGPoint(x: viewPortHandler.contentLeft, y: viewPortHandler.contentBottom)
         getTransformer(.Left).pixelToValue(&pt)
-        return (pt.x <= 0.0) ? 0 : Int(pt.x + 1.0)
+        return (pt.x <= 0.0) ? 0 : Int(round(pt.x + 1.0))
     }
     
     /// - returns: the highest x-index (value on the x-axis) that is still visible on the chart.
@@ -1716,7 +1716,7 @@ public class BarLineChartViewBase: ChartViewBase, BarLineScatterCandleBubbleChar
     {
         var pt = CGPoint(x: viewPortHandler.contentRight, y: viewPortHandler.contentBottom)
         getTransformer(.Left).pixelToValue(&pt)
-        return (_data != nil && Int(pt.x) >= _data.xValCount) ? _data.xValCount - 1 : Int(pt.x)
+        return (_data != nil && Int(round(pt.x)) >= _data.xValCount) ? _data.xValCount - 1 : Int(round(pt.x))
     }
 }