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1 d93979b7 Arnaud Dieumegard
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-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
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-- This file is part of VESTs (Vhdl tESTs).
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-- VESTs is free software; you can redistribute it and/or modify it
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-- under the terms of the GNU General Public License as published by the
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-- Free Software Foundation; either version 2 of the License, or (at
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-- your option) any later version. 
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-- VESTs is distributed in the hope that it will be useful, but WITHOUT
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-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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-- FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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-- for more details. 
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-- You should have received a copy of the GNU General Public License
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-- along with VESTs; if not, write to the Free Software Foundation,
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-- Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
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-- ---------------------------------------------------------------------
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--
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-- $Id: ch_03_fg_03_08.vhd,v 1.3 2001-10-26 16:29:33 paw Exp $
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-- $Revision: 1.3 $
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--
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-- ---------------------------------------------------------------------
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entity max3 is
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  port ( a, b, c : in integer;  z : out integer );
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end entity max3;
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architecture check_error of max3 is
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begin
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  maximizer : process (a, b, c)
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    variable result : integer;
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  begin
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    if a > b then
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      if a > c then
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        result := a;
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      else
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        result := a;  -- Oops!  Should be: result := c;
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      end if;
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    elsif  b > c then
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      result := b;
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    else
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      result := c;
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    end if;
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    assert result >= a and result >= b and result >= c
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      report "inconsistent result for maximum"
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      severity failure;
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    z <= result;
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  end process maximizer;
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end architecture check_error;