41 lines
1.0 KiB
Go
41 lines
1.0 KiB
Go
// Copyright 2023 LiveKit, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package utils
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import (
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"math"
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"golang.org/x/exp/constraints"
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)
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func LogisticFunc(x0, L, k float64) func(x float64) float64 {
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return func(x float64) float64 {
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return L / (1 + math.Exp(-k*(x-x0)))
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}
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}
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func FastLogisticFunc(x0, L, k float64) func(x float64) float64 {
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return func(x float64) float64 {
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return L / 2 * (1 + k*(x-x0)/(1+math.Abs(k*(x-x0))))
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}
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}
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func Abs[T constraints.Signed | constraints.Float](v T) T {
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if v < 0 {
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return -v
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}
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return v
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}
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