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Fix bounds checks on binary search #4577

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merged 1 commit into from
Feb 9, 2021
Merged

Fix bounds checks on binary search #4577

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6 changes: 2 additions & 4 deletions Source/Charts/Data/Implementations/Standard/ChartDataSet.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -214,7 +214,7 @@ open class ChartDataSet: ChartBaseDataSet
rounding: ChartDataSetRounding) -> Int
{
var closest = partitioningIndex { $0.x >= xValue }
guard closest < endIndex else { return closest }
guard closest < endIndex else { return -1 }

let closestXValue = self[closest].x

Expand All @@ -237,8 +237,6 @@ open class ChartDataSet: ChartBaseDataSet
break
}

guard closest < endIndex else { return endIndex }

// Search by closest to y-value
if !yValue.isNaN
{
Expand All @@ -250,7 +248,7 @@ open class ChartDataSet: ChartBaseDataSet
var closestYValue = self[closest].y
var closestYIndex = closest

while closest < endIndex
while closest < index(before: endIndex)
{
formIndex(after: &closest)
let value = self[closest]
Expand Down