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// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package simulation
import (
"math"
"sort"
"github.com/dexon-foundation/dexon-consensus/core/test"
"github.com/dexon-foundation/dexon-consensus/simulation/config"
)
func calculateMeanStdDeviationFloat64s(a []float64) (float64, float64) {
sum := float64(0)
for _, i := range a {
sum += i
}
mean := sum / float64(len(a))
dev := float64(0)
for _, i := range a {
dev += (i - mean) * (i - mean)
}
dev = math.Sqrt(dev / float64(len(a)))
return mean, dev
}
func calculateMeanStdDeviationInts(a []int) (float64, float64) {
floats := []float64{}
for _, i := range a {
floats = append(floats, float64(i))
}
return calculateMeanStdDeviationFloat64s(floats)
}
func getMinMedianMaxInts(a []int) (int, int, int) {
aCopied := make([]int, len(a))
copy(aCopied, a)
sort.Ints(aCopied)
return aCopied[0], aCopied[len(aCopied)/2], aCopied[len(aCopied)-1]
}
func getMinMedianMaxFloat64s(a []float64) (float64, float64, float64) {
aCopied := make([]float64, len(a))
copy(aCopied, a)
sort.Float64s(aCopied)
return aCopied[0], aCopied[len(aCopied)/2], aCopied[len(aCopied)-1]
}
func prepareConfigs(
round uint64, cfgs []config.Change, gov *test.Governance) {
for _, c := range cfgs {
if c.Round != round {
continue
}
t := config.StateChangeTypeFromString(c.Type)
if err := gov.State().RequestChange(
t, config.StateChangeValueFromString(t, c.Value)); err != nil {
panic(err)
}
}
gov.CatchUpWithRound(round)
}
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