64 lines
1.7 KiB
Coq
64 lines
1.7 KiB
Coq
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/*
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* Copyright (c) 2000 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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/*
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* This program tests that signed registers are compared using signed
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* arithmetic.
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*/
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module main;
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reg signed [7:0] vala;
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reg signed [7:0] valb;
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reg [7:0] valc;
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initial begin
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vala = -1;
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valb = +1;
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valc = -1;
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if (vala >= valb) begin
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$display("FAILED -- vala(%b) is >= valb(%b)", vala, valb);
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$finish;
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end
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if (vala > valb) begin
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$display("FAILED -- vala(%b) is > valb(%b)", vala, valb);
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$finish;
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end
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if (valb <= vala) begin
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$display("FAILED -- valb(%b) is <= vala(%b)", valb, vala);
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$finish;
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end
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if (valb < vala) begin
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$display("FAILED -- valb(%b) is < vala(%b)", valb, vala);
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$finish;
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end
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if (valc <= valb) begin
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$display("FAILED -- valc(%b) is not > valb(%b)", valc, valb);
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$finish;
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end
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$display("PASSED");
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end // initial begin
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endmodule // main
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