How do i use the MathF.Clamp Function correctly?

So i have this script for rotation my turret in my android game and it works fine on the touchscreen of my android device. I am using the standard assets cross platform scripts attached to my UI buttons and everything works but i want to know how can i and an and statement to my current script so i can make it cross platform and use the Input.GetAxis as well as the cross platform axis?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityStandardAssets.CrossPlatformInput;

public class Aim : MonoBehaviour
{

public float minClamp = -90f;
public float maxClamp = -43f;
public float speed = 5.0f;
private float zRotation = -90f;

void Update()
{
    zRotation = Mathf.Clamp(zRotation - CrossPlatformInputManager.GetAxis("Horizontal") * speed, minClamp, maxClamp);
    transform.eulerAngles = new Vector3(zRotation, -90f, 0);
}

}

Say you want to clamp the x position of your gameobject, you would write it like this

      void Update()
     {
            SampleFloatX = Mathf.Clamp(SampleFloatX, //minvalue, //maxvalue);
     }