mirror of
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
41 lines
874 B
Go
41 lines
874 B
Go
package math
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import (
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"context"
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"math/rand"
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"time"
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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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)
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// RAND return a pseudo-random number between 0 and 1.
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// @param {Int | Float} [max] - Upper limit.
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// @param {Int | Float} [min] - Lower limit.
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// @return {Float} - A number greater than 0 and less than 1.
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func Rand(_ context.Context, args ...core.Value) (core.Value, error) {
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err := core.ValidateArgs(args, 0, 2)
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if err != nil {
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return values.None, err
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}
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if len(args) == 0 {
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rand.Seed(time.Now().UnixNano())
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return values.NewFloat(rand.Float64()), nil
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}
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var max float64
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var min float64
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max = float64(values.ToFloat(args[0]))
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if len(args) > 1 {
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min = float64(values.ToFloat(args[1]))
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} else {
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max, min = core.NumberBoundaries(max)
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}
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return values.NewFloat(core.Random(max, min)), nil
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}
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