40 lines
748 B
Go
40 lines
748 B
Go
// Copyright 2022 wanderer <a_mirre at utb dot cz>
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// SPDX-License-Identifier: GPL-3.0-or-later
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package bench
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import "math"
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// Schwefel computes a value of the Schwefel function for x.
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func Schwefel(x []float64) float64 {
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var res float64
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for _, val := range x {
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res += val * math.Sin(math.Sqrt(math.Abs(val)))
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}
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return 418.9829*float64(len(x)) - res
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}
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// DeJong1st computes the value of the 1st De Jong function for x.
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func DeJong1st(x []float64) float64 {
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var res float64
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for _, val := range x {
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res += math.Floor(val)
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}
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return res
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}
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// DeJong2nd computes the value of the 2nd De Jong function for x.
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func DeJong2nd(x []float64) float64 {
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var res float64
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for _, val := range x {
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res += math.Pow(val, 2)
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}
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return res
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}
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