blob: 5c059f1bc6dd33643c0c4d436075aac1af8e8309 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
-- 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: tc25.vhd,v 1.2 2001-10-26 16:29:48 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
ENTITY c04s02b00x00p10n02i00025ent IS
END c04s02b00x00p10n02i00025ent;
ARCHITECTURE c04s02b00x00p10n02i00025arch OF c04s02b00x00p10n02i00025ent 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 to 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 := -1;
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 := 2;
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:c04s02b00x00p10n02i00025"
severity NOTE;
assert ( k=0 and l=0 )
report "***FAILED TEST: c04s02b00x00p10n02i00025 - 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 c04s02b00x00p10n02i00025arch;
|
