Dプログラミング-ビット演算子

D言語でサポートされているビット演算子は、次の表にリストされています。変数Aが60を保持し、変数Bが13を保持すると仮定します-

Operator	Description	Example
&	Binary AND Operator copies a bit to the result if it exists in both operands.	(A & B) will give 12, Means 0000 1100.
		Binary OR Operator copies a bit if it exists in either operand.
(A	B) gives 61. Means 0011 1101.	^
Binary XOR Operator copies the bit if it is set in one operand but not both.	(A ^ B) gives 49. Means 0011 0001	~
Binary Ones Complement Operator is unary and has the effect of 'flipping' bits.	(~A ) gives -61. Means 1100 0011 in 2’s complement form.	<<
Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand.	A << 2 give 240. Means 1111 0000	>>

例

Dプログラミング言語で使用可能なすべてのビット演算子を理解するには、次の例を試してください-

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 %d\n", c );

   c = a | b;      /*61 = 0011 1101*/
   writefln("Line 2 - Value of c is %d\n", c );

   c = a ^ b;      /*49 = 0011 0001*/
   writefln("Line 3 - Value of c is %d\n", c );

   c = ~a;         /*-61 = 1100 0011 */
   writefln("Line 4 - Value of c is %d\n", c );

   c = a << 2;    /*240 = 1111 0000*/
   writefln("Line 5 - Value of c is %d\n", c );

   c = a >> 2;    /*15 = 0000 1111*/
   writefln("Line 6 - Value of c is %d\n", c );

   return 0;
}

上記のプログラムをコンパイルして実行すると、次の結果が生成されます-

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

D-programming-bitwise-operators

Dプログラミング-ビット演算子

例