zeni/go-chart
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pct diff function

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This commit is contained in:
Will Charczuk 2016-07-13 15:46:51 -07:00
parent c7170a2650
commit b15c99f695
1 changed files with 6 additions and 0 deletions
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6
util.go
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@ -135,3 +135,9 @@ func Seq(start, end float64, steps ...float64) []float64 {
}
return values
}
// PercentageDifference computes the percentage difference between two values.
// The formula is (v2-v1)/v1.
func PercentageDifference(v1, v2 float64) float64 {
return (v2 - v1) / v1
}