升级流程引擎配置文件版本

vendor/github.com/montanaflynn/stats/round.go

@@ -0,0 +1,38 @@
+package stats
+
+import "math"
+
+// Round a float to a specific decimal place or precision
+func Round(input float64, places int) (rounded float64, err error) {
+
+	// If the float is not a number
+	if math.IsNaN(input) {
+		return math.NaN(), NaNErr
+	}
+
+	// Find out the actual sign and correct the input for later
+	sign := 1.0
+	if input < 0 {
+		sign = -1
+		input *= -1
+	}
+
+	// Use the places arg to get the amount of precision wanted
+	precision := math.Pow(10, float64(places))
+
+	// Find the decimal place we are looking to round
+	digit := input * precision
+
+	// Get the actual decimal number as a fraction to be compared
+	_, decimal := math.Modf(digit)
+
+	// If the decimal is less than .5 we round down otherwise up
+	if decimal >= 0.5 {
+		rounded = math.Ceil(digit)
+	} else {
+		rounded = math.Floor(digit)
+	}
+
+	// Finally we do the math to actually create a rounded number
+	return rounded / precision * sign, nil
+}