35 lines
559 B
Go
Executable File
35 lines
559 B
Go
Executable File
package maths
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import (
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"fmt"
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"math"
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"strconv"
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)
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func StandardDeviationPopulation(input Float64Data) (sdev float64, err error) {
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if input.Len() == 0 {
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return math.NaN(), EmptyInputErr
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}
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vp, _ := PopulationVariance(input)
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return math.Pow(vp, 0.5), nil
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}
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func DivideInt64(a, b int64) float64 {
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if b == 0 {
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return 0
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}
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return float64(a) / float64(b)
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}
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func DivideFloat64(a, b float64) float64 {
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if b == 0 {
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return 0
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}
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return a / b
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}
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func ToFloat64_b2(v float64) float64 {
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f, _ := strconv.ParseFloat(fmt.Sprintf("%.2f", v), 64)
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return f
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}
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