Increment vs Decrement

increment_decrement.go

package increment_decrement

var (
	min = 0
	max = 10000000
)

func Increment() {
	cnt := min
	for i := min; i < max; i++{
		cnt++
	}
}

func Decrement() {
	cnt := max
	for i := max; i > min; i--{
		cnt--
	}
}

increment_decrement_test.go

package increment_decrement

import "testing"

func BenchmarkIncrement(b *testing.B) {
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		Increment()
	}
}


func BenchmarkDecrement(b *testing.B) {
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		Decrement()
	}

}

result

❯❯❯ go test -bench . -benchmem
goos: darwin
goarch: amd64
pkg: github.com/qushot/sandbox/increment-decrement
BenchmarkIncrement-8         300           4861370 ns/op               0 B/op          0 allocs/op
BenchmarkDecrement-8         500           2367798 ns/op               0 B/op          0 allocs/op
PASS
ok      github.com/qushot/sandbox/increment-decrement   3.404s