iverilog/ivtest/ivltests/idiv2.v

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/*
* Copyright (c) 2000 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 is a check of the implementation of division and multiplication
* within more complex expressions.
*/
module test;
task mod;
input [31:0] a;
input [15:0] b;
output [31:0] out;
begin
out = a-(a/b)*b;
end
endtask
reg [31:0] result,c, nl;
initial begin
c = 13; nl = 3;
mod(c, nl, result);
$display("13 %% 3 = %d", result);
if (result !== 32'h00_00_00_01) begin
$display("FAILED -- result is %b", result);
$finish;
end
$display("PASSED");
end
endmodule