发布于 2015-08-16 14:49:54 | 78 次阅读 | 评论: 0 | 来源: 网络整理
由D语言支持的位运算符列于下表中。假设变量A=60和变量B=13，则：
| 运算符 | 描述 | 示例 |
|---|---|---|
| & | 二进制AND拷贝操作，如果它存在于两个操作数的结果。 | (A & B) will give 12 which is 0000 1100 |
| | | 二进制OR运算符拷贝位，如果它存在一个操作数中。 | (A | B) will give 61 which is 0011 1101 |
| ^ | 二进位异或运算符拷贝位，如果它被设置在一个操作数，但不能同时使用。 | (A ^ B) will give 49 which is 0011 0001 |
| ~ | 二进制的补码运算符是一元的，具有'翻转'位的效果。 | (~A ) will give -61 which is 1100 0011 in 2's complement form due to a signed binary number. |
| << | 二进制左移位运算符。左操作数的值被移动由右操作数指定的位数。 | A << 2 will give 240 which is 1111 0000 |
| >> | 二进制右移运算。左操作数的值是正确的由右操作数指定的位数移动。 | A >> 2 will give 15 which is 0000 1111 |
试试下面的例子就明白了所有的D编程语言位运算符：
import std.stdio;
int main(string[] args)
{
uint a = 60; /* 60 = 0011 1100 */
uint b = 13; /* 13 = 0000 1101 */
int c = 0;
c = a & b; /* 12 = 0000 1100 */
writefln("Line 1 - Value of c is %dn", c );
c = a | b; /* 61 = 0011 1101 */
writefln("Line 2 - Value of c is %dn", c );
c = a ^ b; /* 49 = 0011 0001 */
writefln("Line 3 - Value of c is %dn", c );
c = ~a; /*-61 = 1100 0011 */
writefln("Line 4 - Value of c is %dn", c );
c = a << 2; /* 240 = 1111 0000 */
writefln("Line 5 - Value of c is %dn", c );
c = a >> 2; /* 15 = 0000 1111 */
writefln("Line 6 - Value of c is %dn", c );
return 0;
}
当编译并执行上面的程序它会产生以下结果：
Line 1 - Value of c is 12
Line 2 - Value of c is 61
Line 3 - Value of c is 49
Line 4 - Value of c is -61
Line 5 - Value of c is 240
Line 6 - Value of c is 15