DSP Builder for Intel® FPGAs (Advanced Blockset): Handbook

ID 683337
Date 12/04/2023
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

14.4.5. AddSub

The AddSub block produces either the sum (a + b) or the difference (a – b) depending on the input you select (1 for add; 0 for subtract).
Note: For single-precision inputs and designs targeting any device with a floating-point DSP block, the block uses a mixture of resources including the DSP blocks in floating-point mode.
Table 164.  Port Interface for the AddSub Block
Signal Direction Type Description Vector Complex
a Input Single or double Operand 1 Yes Yes
b Input Single or double Operand 2 Yes Yes
add Input Boolean Select input Yes Yes
q Output Single or double Result Yes Yes