verilator/test_regress/t/t_udp_noname.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2012 by Wilson Snyder.

module t (/*AUTOARG*/
   // Inputs
   clk
   );
   input clk;

   reg  a;
   wire  o;
   udp (o, a);

   integer cyc;  initial cyc=0;

   // Test loop
   always @ (posedge clk) begin
      cyc <= cyc + 1;
      a <= cyc[0];
      if (cyc==0) begin
      end
      else if (cyc<90) begin
	 if (a != !cyc[0]) $stop;
      end
      else if (cyc==99) begin
	 $write("*-* All Finished *-*\n");
	 $finish;
      end
   end

endmodule

primitive udp(o,a);
   output o;
   input  a;
`ifdef verilator
   wire   o = ~a;
`else
   table
      //o a
      0 :  1;
      1 :  0;
   endtable
`endif
endprimitive