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Table 2 Truth table of Reversible Gate 1 (RG1)

From: Design of a reversible single precision floating point subtractor

A

B

C

P

Q

R

0

0

0

1

0

0

0

0

1

1

0

1

0

1

0

0

0

0

0

1

1

0

1

1

1

0

0

1

1

1

1

0

1

1

1

0

1

1

0

0

0

1

1

1

1

0

1

0