SVIncCompil/Testcases/Icarus/ivltests/integer2le.v

/*
 * integer2le - a verilog test for integer less-or-equal conditional <=
 *
 * Copyright (C) 1999 Stephen G. Tell
 * Portions inspired by qmark.v by Steven Wilson (stevew@home.com)
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA
 */

module integer2le;

   integer a;
   integer b;
   integer c;
   reg error;
   
initial 
  begin
      error = 0;

      a = 1;
      if(a <= 2) 
        begin
	       b = 1;
        end 
      else 
        begin
	       $display("FAILED 1 <= 2");
	        error = 1;
        end 

      a = 2;

      if(a <= 2) 
        begin
	       b = 1;
        end 
      else 
        begin
	       $display("FAILED 2 <= 2");
	        error = 1;
        end 

      a = 3;

      if(a <= 2) 
        begin
	       $display("FAILED 3 <= 2");
	        error = 1;
        end 

       c = 0;
       a = 10;
       for(b = 0; a <= 5; b = b + 1) 
         begin
	       b = b + a;
	       c = c + 1;
	       if(c > 10) 
             begin
	           $display("FAILED (infinite loop) a=%d b=%d", a, b);
	            error = 1;
	           $finish;
	        end
         end
      if(b != 0) 
         begin
	        $display("FAILED forloop a=%d b=%d", a, b);
	        error = 1;
         end
      if(a != 10) 
         begin
	        $display("FAILED forloop a=%d b=%d", a, b);
	        error = 1;
         end

      b = 0;
      c = 0;
      for(a = 0; a <= 5; a = a + 1)
         begin
	       b = b + a;
	       c = c + 1;
	       if(c > 10)
              begin
	            $display("FAILED (infinite loop) a=%d b=%d", a, b);
	            error = 1;
	            $finish;
	         end
         end

      if(b != 15) 
         begin
	        $display("FAILED forloop b=%d expected 15", b);
	        error = 1;
         end
      
      if(error == 0)
	     $display("PASSED");

      $finish;
   end // initial begin
   
endmodule