Oring of ifdef

SystemVerilog
1

I want to write or of ifdef
I have tried 2 possible ways as below :

  1. `ifdef (A || B)
  2. `ifdef (A or B)
  3. `ifdef A || B
  4. ifdef A || ifdef B

Can you please suggest how can I do oring of ifdef?

Thanks in advance
Regards

2 
`ifdef A
  `define AorB
`elsif B
  `define AorB
`endif
`idfef AorB
  ...
`endif

You would nest the `ifdef to define AandB

3 
module temp;

initial begin

`ifdef FULL_RATE
  $display("I am in full rate");
`endif

`ifdef HALF_RATE or QURD_RATE
  $display("I am in else part");
`endif

end  
endmodule

Here I am passing define [FULL_RATE or HALF_RATE or QUAD_RATE] through command line argument.
Now above mentioned line
`ifdef HALF_RATE or QURD_RATE
giving us compilation error as below

– Compiling module temp
** Error: temp.sv(7): near “or”: syntax error, unexpected or

Our requirement :
when we pass HALF_RATE or QUAD_RATE same piece of code should get execute.

4

In reply to Niyati:

I already answered your question.

Replace A with HALF_RATE, B with QUAD_RATE, and AorB with HALForQUAD_RATE

5

In reply to dave_59:

But
`ifdef HALF_RATE or QURD_RATE
giving us compilation error as below

– Compiling module temp
** Error: temp.sv(7): near “or”: syntax error, unexpected or

6

In reply to Niyati:

module temp;
 
initial begin
 
`ifdef FULL_RATE
  $display("I am in full rate");
`endif
 
`ifdef HALF_RATE
  `define HALForQUAD_RATE
`elsif QUAD_RATE
  `define HALForQUAD_RATE
`endif
`ifdef HALForQUAD_RATE
  $display("I am in else part");
`endif
 
end
endmodule
7

In reply to :

show some code.

8

In reply to dave_59:

`ifdef A
`define AorB
`elsif B
`define AorB
`endif
`idfef AorB
...
`endif

You would nest the `ifdef to define AandB

So you mean, we need to replicate the code twice? :(((

Isn’t there any shortcut available?

9

In reply to 1978bubun:
There is no replication of SV code, just the `define AorB.

10

In reply to dave_59:

In reply to 1978bubun:
There is no replication of SV code, just the `define AorB.

Got it…so basically it’s a two layered define…thanks