网站负责人照片,最好大连网站建设,网页qq属于,中国住房城乡建设部网站C语言_常见位操作 文章目录 C语言_常见位操作一、位操作函数二、代码示例 一、位操作函数
设置某位为1或者对某位清0、获取某位的值、对某位取反
/*对某位置1*/
unsigned Setbit(unsigned x,int n)
{return x | 1 n;
}/*对某位清0*/
unsigned Resetbit(unsigned x,…C语言_常见位操作 文章目录 C语言_常见位操作一、位操作函数二、代码示例 一、位操作函数
设置某位为1或者对某位清0、获取某位的值、对某位取反
/*对某位置1*/
unsigned Setbit(unsigned x,int n)
{return x | 1 n;
}/*对某位清0*/
unsigned Resetbit(unsigned x,int n)
{return x ~(1 n);
}/*取某位的值*/
unsigned Getbit(unsigned x,int n)
{return ((x) (n)1))
}/*对某位取反*/
unsigned Invertbit(unsigned x,int n)
{return ((x) ^ 1(n))
}获取x从p位到n位的值
unsigned Getbits(unsigned x,int p,int n)
{return (x (p1-n)) ~(~0 n);
}设置x从p位到n位的值
unsigned Setbits(unsigned x,int p,int n,int y)
{return x ~(~(~0 n) (p1-n)) | (y ~(~0 n)) (p1-n);
}对x从p位到n位的值进行取反
unsigned Invertbits(unsigned x,int p,int n)
{return x ^ (~(~0 n)) (p-n1);
}
对x循环右移n位
unsigned Rightbits(unsigned x,int n)
{return (x n) | (x (8*(sizeof(unsigned))-n));
}二、代码示例
代码如下示例
#includestdio.h
#includestring.hvoid print_binary(unsigned int num) {if (num 1) {print_binary(num 1);}putchar((num 1) ? 1 : 0);}/*对某位置1*/
unsigned Setbit(unsigned x,int n)
{return x | 1 n;
}/*对某位清0*/
unsigned Resetbit(unsigned x,int n)
{return x ~(1 n);
}/*取某位的值*/
unsigned Getbit(unsigned x,int n)
{return ((x) (n)1);
}/*对某位取反*/
unsigned Invertbit(unsigned x,int n)
{return ((x) ^ 1(n));
}unsigned Getbits(unsigned x,int p,int n)
{return (x (p1-n)) ~(~0 n);
}unsigned Setbits(unsigned x,int p,int n,int y)
{return x ~(~(~0 n) (p1-n)) | (y ~(~0 n)) (p1-n);
}unsigned Invertbits(unsigned x,int p,int n)
{return x ^ (~(~0 n)) (p-n1);
}unsigned Rightbits(unsigned x,int n)
{return (x n) | (x (8*(sizeof(unsigned))-n));
}void main(int argc,char* argv[])
{int a 178 ,b 178 , c 178 , d 178 , e 178 , f 178 , g 178 , h 178; int p 5,n 3;printf( 178: \t\t\t);print_binary(a);printf(\t\n\n);printf( Setbit(a,3): \t\t);print_binary(Setbit(a,3));printf(\t\n);printf( Resetbit(b,4): \t);print_binary(Resetbit(b,4));printf(\t\n);printf( Getbit(c,5):\t\t);print_binary(Getbit(c,5));printf(\t\n);printf( Invertbit(d,2):\t);print_binary(Invertbit(d,2));printf(\t\n);printf( Getbits(e,5,3):\t);print_binary(Getbits(e,5,3));printf(\t\n);printf( Setbits(f,p,n,15):\t);print_binary(Setbits(f,p,n,15));printf(\t\n);printf( Invertbits(g,5,3):\t);print_binary(Invertbits(g,5,3));printf(\t\n);printf( Rightbits(h,5):\t);print_binary(Rightbits(h,5));printf(\t\n);}结果 178: 10110010 Setbit(a,3): 10111010 Resetbit(b,4): 10100010 Getbit(c,5): 1 Invertbit(d,2): 10110110 Getbits(e,5,3): 110 Setbits(f,p,n,15): 10111010 Invertbits(g,5,3): 10001010 Rightbits(h,5): 10010000000000000000000000000101
