mac이 ARM64 인지 intel86인지 아는 방법

private func isARM64() -> Bool {
        return getMachineHardwareName()! == "arm64"
    }
    
    private func getMachineHardwareName() -> String? {
        var sysInfo = utsname()
        let retVal = uname(&sysInfo)
        guard retVal == EXIT_SUCCESS else { return nil }

        return String(cString: &sysInfo.machine.0, encoding: .utf8)
    }