Go의 유형 어설션 및 유형 전환은 다른 유형 검사 방법과 비교하여 어떻게 수행됩니까?

package main

import (
    "testing"
)

type myint int64

type Inccer interface {
    inc()
}

func (i *myint) inc() {
    *i = *i + 1
}

func BenchmarkIntmethod(b *testing.B) {
    i := new(myint)
    incnIntmethod(i, b.N)
}

func BenchmarkInterface(b *testing.B) {
    i := new(myint)
    incnInterface(i, b.N)
}

func BenchmarkTypeSwitch(b *testing.B) {
    i := new(myint)
    incnSwitch(i, b.N)
}

func BenchmarkTypeAssertion(b *testing.B) {
    i := new(myint)
    incnAssertion(i, b.N)
}

// Remaining helper functions...

BenchmarkIntmethod-16           2000000000           1.67 ns/op
BenchmarkInterface-16           1000000000           2.03 ns/op
BenchmarkTypeSwitch-16          2000000000           1.70 ns/op
BenchmarkTypeAssertion-16       2000000000           1.67 ns/op