There are component libraries, though they're usually much lower level than an ALU. For example Synopsys Designware: https://www.synopsys.com/dw/buildingblock.

There are component libraries, though they're usually much lower level than an ALU. For example Synopsys Designware: https://www.synopsys.com/dw/buildingblock.php https://www.synopsys.com/dw/buildingblock.php