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Table 1 Reversible logic gates

From: Design of a reversible single precision floating point subtractor

SI.No	Gate	Block diagram	Function
1.	Feynman		P = A
1.	Feynman		Q = A ⊕ B
2.	Toffoli		P = A
			Q = B
			R = AB ⊕ C
3.	URG		P = (A + B) ⊕ C
			Q = B
			R = AB ⊕ C
4.	TR		P = A
			Q = A ⊕ B
			R = AB′ ⊕ C
5.	BJN		P = A
			Q = B
			R = (A + B) ⊕ C
6.	Fredkin		P = A
			Q = A’B + AC
			R = AB + A’C
7.	Peres		P = A
			Q = A ⊕ B
			R = AB ⊕ C
8.	M		P = A
			Q = (A ⊕ B)′
			R = AB′ ⊕ C
9.	L		P = A
			Q = B
			R = (A + B)′ ⊕ C

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