Bits.cs 1.2 KB

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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5. /// <summary>
  6. /// 位操作
  7. /// </summary>
  8. public partial class Utils
  9. {
  10. /// <summary>
  11. /// 设置指定位为0 位下标:0-31
  12. /// </summary>
  13. /// <param name="val">目标值</param>
  14. /// <param name="pos">目标位</param>
  15. /// <returns>修改后的值</returns>
  16. public static int BitZero(int val, int pos)
  17. {
  18. int bit = 1 << pos;
  19. int mark = 0;
  20. mark = (~mark) ^ bit;
  21. val &= mark;
  22. return val;
  23. }
  24. /// <summary>
  25. /// 设置指定位为1 位下标:0-31
  26. /// </summary>
  27. /// <param name="val">目标值</param>
  28. /// <param name="pos">目标位</param>
  29. /// <returns>修改后的值</returns>
  30. public static int BitOne(int val, int pos)
  31. {
  32. int bit = 1 << pos;
  33. val |= bit;
  34. return val;
  35. }
  36. /// <summary>
  37. /// 获取指定位的值 位下标:0-31
  38. /// </summary>
  39. /// <param name="val">目标值</param>
  40. /// <param name="pos">目标位</param>
  41. /// <returns>目标位的值0或1</returns>
  42. public static int GetBit(int val, int pos)
  43. {
  44. return (val & (1 << pos)) >> pos;
  45. }
  46. }