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https://github.com/MontFerret/ferret.git
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37 lines
646 B
Go
37 lines
646 B
Go
package math
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import (
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"math"
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"github.com/MontFerret/ferret/pkg/runtime/core"
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"github.com/MontFerret/ferret/pkg/runtime/values"
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"github.com/MontFerret/ferret/pkg/runtime/values/types"
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)
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func mean(input *values.Array) (values.Float, error) {
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if input.Length() == 0 {
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return values.NewFloat(math.NaN()), nil
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}
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var err error
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var sum float64
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input.ForEach(func(value core.Value, idx int) bool {
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err = core.ValidateType(value, types.Int, types.Float)
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if err != nil {
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return false
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}
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sum += toFloat(value)
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return true
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})
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if err != nil {
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return 0, err
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}
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return values.NewFloat(sum / float64(input.Length())), nil
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}
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