bInterval到周期间隙的计算

#include <iostream>
#include <stdio.h>
int GetPeriod(int tmp)
{
    int period = 32;
    while ((period & tmp) == 0) {
        period >>= 1;
    }
    return period;

}

int main()
{
    for (int i = 1; i < 34; i++)
    {
        printf("%d\t%d\n", i, GetPeriod(i));
    }
}

输出为：

1       1
2       2
3       2
4       4
5       4
6       4
7       4
8       8
9       8
10      8
11      8
12      8
13      8
14      8
15      8
16      16
17      16
18      16
19      16
20      16
21      16
22      16
23      16
24      16
25      16
26      16
27      16
28      16
29      16
30      16
31      16
32      32
33      32