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Code Issues Releases Activity

Updated RAND function (#271)

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* Updated RAND function

* renamed a func
This commit is contained in:
Tim Voronov 2019-03-19 16:17:05 -04:00 committed by GitHub
parent 1cf260cd59
commit 37fb385ba4
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 55 additions and 12 deletions
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21
pkg/runtime/core/helpers.go
View File

@ -1,6 +1,10 @@
package core
import "reflect"
import (
"math"
"math/rand"
"reflect"
)
func IsNil(input interface{}) bool {
val := reflect.ValueOf(input)
@ -24,3 +28,18 @@ func IsNil(input interface{}) bool {
return false
}
}
func NumberBoundaries(input float64) (max float64, min float64) {
min = input / 2
max = input * 2
return
}
func Random(max float64, min float64) float64 {
r := rand.Float64()
i := r * (max - min + 1)
out := math.Floor(i) + min
return out
}

31
pkg/stdlib/math/rand.go
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@ -9,13 +9,42 @@ import (
)
// Rand return a pseudo-random number between 0 and 1.
// @param max (Float|Int, optional) - Upper limit.
// @param min (Float|Int, optional) - Lower limit.
// @returns (Float) - A number greater than 0 and less than 1.
func Rand(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 0, 0)
err := core.ValidateArgs(args, 0, 2)
if err != nil {
return values.None, err
}
if len(args) == 0 {
return values.NewFloat(rand.Float64()), nil
}
var max float64
var min float64
arg1, err := values.ToFloat(args[0])
if err != nil {
return values.None, err
}
max = float64(arg1)
if len(args) > 1 {
arg2, err := values.ToFloat(args[1])
if err != nil {
return values.None, err
}
min = float64(arg2)
} else {
max, min = core.NumberBoundaries(max)
}
return values.NewFloat(core.Random(max, min)), nil
}

13
pkg/stdlib/utils/wait.go
View File

@ -6,28 +6,23 @@ import (
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
"github.com/MontFerret/ferret/pkg/runtime/values/types"
)
// Wait pauses the execution for a given period.
// @param timeout (Int) - Integer value indication for how long to pause.
func Wait(_ context.Context, inputs ...core.Value) (core.Value, error) {
err := core.ValidateArgs(inputs, 1, 1)
// @param timeout (Float|Int) - Number value which indicates for how long to stop an execution.
func Wait(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.None, nil
}
arg := values.ZeroInt
err = core.ValidateType(inputs[0], types.Int)
arg, err := values.ToInt(args[0])
if err != nil {
return values.None, err
}
arg = inputs[0].(values.Int)
time.Sleep(time.Millisecond * time.Duration(arg))
return values.None, nil