mirror of
https://github.com/ClusterCockpit/cc-backend
synced 2024-09-20 11:27:26 +02:00
59 lines
1011 B
Go
59 lines
1011 B
Go
// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.
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// All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package importer
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import (
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"math"
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ccunits "github.com/ClusterCockpit/cc-units"
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)
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func getNormalizationFactor(v float64) (float64, int) {
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count := 0
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scale := -3
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if v > 1000.0 {
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for v > 1000.0 {
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v *= 1e-3
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count++
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}
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} else {
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for v < 1.0 {
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v *= 1e3
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count++
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}
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scale = 3
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}
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return math.Pow10(count * scale), count * scale
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}
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func getExponent(p float64) int {
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count := 0
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for p > 1.0 {
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p = p / 1000.0
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count++
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}
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return count * 3
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}
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func newPrefixFromFactor(op ccunits.Prefix, e int) ccunits.Prefix {
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f := float64(op)
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exp := math.Pow10(getExponent(f) - e)
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return ccunits.Prefix(exp)
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}
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func Normalize(avg float64, p string) (float64, string) {
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f, e := getNormalizationFactor(avg)
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if e != 0 {
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np := newPrefixFromFactor(ccunits.NewPrefix(p), e)
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return f, np.Prefix()
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}
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return f, p
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}
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