iverilog/ivtest/ivltests/const2.v

43 lines
1.3 KiB
Verilog

/*
* Copyright (c) 2002 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 of the License, 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*
* This test checks that signed comparisons of constants work
* properly in conditional expressions. These cases are of
* interest because they are evaluated at compile time, so
* that dead code can be skipped.
*/
module main;
initial begin
if ((0 < -255) || (0 > 255)) begin
$display("FAILED -- expression evaluated true");
$finish;
end
if ((0 <= -255) || (0 >= 255)) begin
$display("FAILED -- expression evaluated true");
$finish;
end
$display("PASSED");
end
endmodule // main