74F181 Datasheet, Philips

* Provides 16 arithmetic operation: add, subtract, compare, and double; plus 12 other arithmetic operations PIN CONFIGURATION B0 1 A0 S3 S2 S1 S0 Cn M 2 3 4 5 6 7 8.

The 74F181 is a 4-bit high-speed parallel Arithmetic Logic Unit (ALU). Controlled by the four Function Select inputs (S0
  –S3) and the Mode Control input (M), it can perform all the 16 possible logic operations or 16 different arithmeti.