c语言实现循环位移的函数

• 循环左移

  #include <stdio.h>
  int lefttrot(int x, int n){
      if (n < 0) {
          printf("移动数目不可为负");
          return -1;
      }
      
      n %= 32;
      int book = x & (-1 >> (32 - n));
      return (x >> n) | (book << (32 - n));
  }
  
  int main(){
      printf("%d", lefttrot(-1, 100));
      return 0;
  }

• 循环右移

  #include <stdio.h>
  int righttrot(int x, int n){
      if (n < 0) {
          printf("移动数目不可为负");
          return -1;
      }
      
      n %= 32;
      int book = x >> (32 - n);
      return (x << n) | book;
  }
  
  int main(){
      printf("%d", righttrot(-1, 100));
      return 0;
  }