using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

/// <summary>
/// 位操作
/// </summary>
public partial class Utils
{
    /// <summary>
    /// 设置指定位为0  位下标:0-31
    /// </summary>
    /// <param name="val">目标值</param>
    /// <param name="pos">目标位</param>
    /// <returns>修改后的值</returns>
    public static int BitZero(int val, int pos)
    {
        int bit = 1 << pos;
        int mark = 0;
        mark = (~mark) ^ bit;
        val &= mark;
        return val;
    }

    /// <summary>
    /// 设置指定位为1  位下标:0-31
    /// </summary>
    /// <param name="val">目标值</param>
    /// <param name="pos">目标位</param>
    /// <returns>修改后的值</returns>
    public static int BitOne(int val, int pos)
    {
        int bit = 1 << pos;
        val |= bit;
        return val;
    }

    /// <summary>
    /// 获取指定位的值 位下标:0-31
    /// </summary>
    /// <param name="val">目标值</param>
    /// <param name="pos">目标位</param>
    /// <returns>目标位的值0或1</returns>
    public static int GetBit(int val, int pos)
    {
        return (val & (1 << pos)) >> pos;
    }
}