Can a Verilog function take a boolean argument?

I've got a Verilog function that I'd like to behave slightly differently depending on the value of a boolean argument, an argument whose value can be either (true) or (false). I tried:

  module sid ();

function integer execOp; input integer left; input integer right; input boolean add; begin execOp = add ? left + right : left * right; end endfunction


Then when I use Icarus to simulate it I get:
  D:\Hf\Verilog\Unpacked\Common>\Icarus\bin\iverilog -g2009 -o sid.out syntax error error: Syntax error defining function.


Line 6 is the line where I declare variable (add). Is there a way to pass a boolean argument to a function, or am I going to have to declare an (enum) that has values (true) and (false)?

Reply to
Kevin Simonson
Loading thread data ...

There is no "Boolean" type in Verilog, as far as I know. The default type is a 1-bit register that is fairly equivalent. If you just delete the word "boolean" from your example, it should work.

Reply to
Kevin Neilson

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.