35 lines
556 B
Go
35 lines
556 B
Go
package builtins
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import (
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"monkey/object"
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"monkey/typing"
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)
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func pow(x, y int64) int64 {
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p := int64(1)
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for y > 0 {
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if y&1 != 0 {
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p *= x
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}
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y >>= 1
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x *= x
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}
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return p
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}
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// Pow ...
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func Pow(args ...object.Object) object.Object {
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if err := typing.Check(
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"pow", args,
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typing.ExactArgs(2),
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typing.WithTypes(object.INTEGER_OBJ, object.INTEGER_OBJ),
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); err != nil {
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return newError(err.Error())
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}
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x := args[0].(*object.Integer)
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y := args[1].(*object.Integer)
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value := pow(x.Value, y.Value)
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return &object.Integer{Value: value}
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}
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