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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: tc2266.vhd,v 1.2 2001-10-26 16:29:46 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
ENTITY c07s02b06x00p11n01i02266ent IS
END c07s02b06x00p11n01i02266ent;
ARCHITECTURE c07s02b06x00p11n01i02266arch OF c07s02b06x00p11n01i02266ent IS
BEGIN
TESTING: PROCESS
-- Local declarations.
variable A, B : INTEGER;
variable OKtest : INTEGER := 0;
BEGIN
-- Test integer division.
-- 1. Both positive.
for A in 0 to 20 loop
for B in 1 to 20 loop
if NOT(((-A)/B) = -(A/B)) then
OKtest := 1;
end if;
assert (((-A)/B) = -(A/B))
report "Integer Division operation has failed for positive integers.";
if NOT((A/(-B)) = -(A/B)) then
OKtest := 1;
end if;
assert ((A/(-B)) = -(A/B))
report "Integer Division operation has failed for positive integers.";
end loop;
end loop;
-- 2. A negative, B positive.
for A in -1 downto -20 loop
for B in 1 to 20 loop
if NOT(((-A)/B) = -(A/B)) then
OKtest := 1;
end if;
assert (((-A)/B) = -(A/B))
report "Integer Division operation has failed for positive integers.";
if NOT((A/(-B)) = -(A/B)) then
OKtest := 1;
end if;
assert ((A/(-B)) = -(A/B))
report "Integer Division operation has failed for positive integers.";
end loop;
end loop;
-- 3. A positive, B negative.
for A in 0 to 20 loop
for B in -1 downto -20 loop
if NOT(((-A)/B) = -(A/B)) then
OKtest := 1;
end if;
assert (((-A)/B) = -(A/B))
report "Integer Division operation has failed for positive integers.";
if NOT((A/(-B)) = -(A/B)) then
OKtest := 1;
end if;
assert ((A/(-B)) = -(A/B))
report "Integer Division operation has failed for positive integers.";
end loop;
end loop;
-- 4. Both negative.
for A in -1 downto -20 loop
for B in -1 downto -20 loop
if NOT(((-A)/B) = -(A/B)) then
OKtest := 1;
end if;
assert (((-A)/B) = -(A/B))
report "Integer Division operation has failed for positive integers.";
if NOT((A/(-B)) = -(A/B)) then
OKtest := 1;
end if;
assert ((A/(-B)) = -(A/B))
report "Integer Division operation has failed for positive integers.";
end loop;
end loop;
wait for 5 ns;
assert NOT(OKtest = 0)
report "***PASSED TEST: c07s02b06x00p11n01i02266"
severity NOTE;
assert (OKtest = 0)
report "***FAILED TEST: c07s02b06x00p11n01i02266 - Integer division should satisfy the following identity: (-A)/B = -(A/B) = A/(-B)."
severity ERROR;
wait;
END PROCESS TESTING;
END c07s02b06x00p11n01i02266arch;
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