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https://github.com/MontFerret/ferret.git
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24d8eedd4c
* Added release notes * #509 fixedOCOD typo * Updated values * Updated comments * Changed stdlib docs format * Changed format of array in docs * Use 'any' instead of 'value' in docs * New format for optional params * Updated docs for testing package * Added namespace information
36 lines
808 B
Go
36 lines
808 B
Go
package math
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import (
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"context"
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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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// VARIANCE_POPULATION returns the population variance of the values in a given array.
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// @param {Int[] | Float[]} numbers - Array of numbers.
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// @return {Float} - The population variance.
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func PopulationVariance(_ context.Context, args ...core.Value) (core.Value, error) {
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err := core.ValidateArgs(args, 1, 1)
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if err != nil {
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return values.None, err
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}
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err = core.ValidateType(args[0], types.Array)
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if err != nil {
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return values.None, err
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}
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arr := args[0].(*values.Array)
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if arr.Length() == 0 {
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return values.NewFloat(math.NaN()), nil
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}
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return variance(arr, values.NewInt(0)), nil
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}
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