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-- Copyright (C) 2001 Bill Billowitch.
-- Some of the work to develop this test suite was done with Air Force
-- support. The Air Force and Bill Billowitch assume no
-- responsibilities for this software.
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs 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 of the License, or (at
-- your option) any later version.
-- VESTs 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 VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: tc26.vhd,v 1.2 2001-10-26 16:29:49 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
ENTITY c04s02b00x00p10n02i00026ent IS
END c04s02b00x00p10n02i00026ent;
ARCHITECTURE c04s02b00x00p10n02i00026arch OF c04s02b00x00p10n02i00026ent IS
BEGIN
TESTING: PROCESS
-- Define an ascending subtype.
subtype ASC_B is INTEGER range 0 to 1;
subtype ASC is ASC_B;
-- Define a descending subtype.
subtype DES_B is INTEGER range 1 downto 0;
subtype DES is DES_B;
-- Define a 'previous value' variable.
variable PREV : INTEGER;
variable k : integer := 0;
variable l : integer := 0;
BEGIN
-- Test the direction of the ascending range.
PREV := 0;
for I in ASC loop
if (I >= PREV) then
PREV := I;
else
k := 1;
end if;
end loop;
-- Test the direction of the descending range.
PREV := 1;
for I in DES loop
if (I <= PREV) then
PREV := I;
else
l := 1;
end if;
end loop;
assert NOT( k=0 and l=0 )
report "***PASSED TEST: c04s02b00x00p10n02i00026"
severity NOTE;
assert ( k=0 and l=0 )
report "***FAILED TEST: c04s02b00x00p10n02i00026 - The direction of a discrete subtype indication is the same as that of the denoted subtype in the absence of an explicit type constraint."
severity ERROR;
wait;
END PROCESS TESTING;
END c04s02b00x00p10n02i00026arch;
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