Fsharp-bitwise-operators

F＃-ビット演算子

ビットごとの演算子はビットに対して機能し、ビットごとの操作を実行します。 &&&（ビットごとのAND）、|||の真理値表（ビットごとのOR）、および^{^}（ビットごとの排他的OR）は次のとおりです-

p	q	p &&& q	p
	q	p ^ q	0	0
0	0	0	0	1
0	1	1	1	1
1	1	0	1	0

A = 60であると仮定します。およびB = 13;今バイナリ形式では、次のようになります-

A = 0011 1100

B = 0000 1101

A &&& B = 0000 1100

A ||| B = 0011 1101

A ^{^} B = 0011 0001

_~ A = 1100 0011

F＃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, which is 0000 1100
	Binary OR Operator copies a bit if it exists in either operand.	(A
		B) will give 61, which is 0011 1101
^	Binary XOR Operator copies the bit if it is set in one operand but not both.	(A ^ B) will give 49, which is 0011 0001
~	Binary Ones Complement Operator is unary and has the effect of 'flipping' bits.	(~A) will give -61, which is 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 will give 240 which is 1111 0000
>>>	Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand.	A >>> 2 will give 15 which is 0000 1111

例

let a : int32 = 60//60 = 0011 1100
let b : int32 = 13//13 = 0000 1101
let mutable c : int32 = 0

c <- a &&& b//12 = 0000 1100
printfn "Line 1 - Value of c is %d" c

c <- a ||| b//61 = 0011 1101
printfn "Line 2 - Value of c is %d" c

c <- a ^^^ b//49 = 0011 0001
printfn "Line 3 - Value of c is %d" c

c <- ~~~a//-61 = 1100 0011
printfn "Line 4 - Value of c is %d" c

c <- a <<< 2//240 = 1111 0000
printfn "Line 5 - Value of c is %d" c

c <- a >>> 2//15 = 0000 1111
printfn "Line 6 - Value of c is %d" c

あなたがプログラムをコンパイルして実行すると、次の出力が得られます-

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 49
Line 5 - Value of c is 240
Line 6 - Value of c is 15