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|
-- CXG2023.A
--
-- Grant of Unlimited Rights
--
-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
-- unlimited rights in the software and documentation contained herein.
-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
-- this public release, the Government intends to confer upon all
-- recipients unlimited rights equal to those held by the Government.
-- These rights include rights to use, duplicate, release or disclose the
-- released technical data and computer software in whole or in part, in
-- any manner and for any purpose whatsoever, and to have or permit others
-- to do so.
--
-- DISCLAIMER
--
-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
-- PARTICULAR PURPOSE OF SAID MATERIAL.
--*
--
-- OBJECTIVE:
-- Check that multiplication and division of decimal fixed point
-- numbers produce exact results.
--
-- TEST DESCRIPTION:
-- Check that multiplication and division of decimal fixed point
-- numbers produce exact results.
--
-- SPECIAL REQUIREMENTS
-- The Strict Mode for the numerical accuracy must be
-- selected. The method by which this mode is selected
-- is implementation dependent.
--
-- APPLICABILITY CRITERIA:
-- This test applies only to implementations supporting the
-- Numerics Annex.
-- This test only applies to the Strict Mode for numerical
-- accuracy.
-- This test applies only to implementations supporting
-- decimal fixed point types of at least 9 digits.
--
--
-- CHANGE HISTORY:
-- 3 Apr 96 SAIC Initial release for 2.1
--
--!
with System;
with Report;
procedure CXG2023 is
Verbose : constant Boolean := False;
procedure Check_1 is
Num_Digits : constant := 6;
type Pennies is delta 0.01 digits Num_Digits;
type Franklins is delta 100.0 digits Num_Digits;
type Dollars is delta 1.0 digits Num_Digits;
P1 : Pennies;
F1 : Franklins;
D1 : Dollars;
-- optimization thwarting functions
function P (X : Pennies) return Pennies is
begin
if Report.Ident_Bool (True) then
return X;
else
return 3.21; -- never executed
end if;
end P;
function F (X : Franklins) return Franklins is
begin
if Report.Ident_Bool (True) then
return X;
else
return 32100.0; -- never executed
end if;
end F;
function D (X : Dollars) return Dollars is
begin
if Report.Ident_Bool (True) then
return X;
else
return 321.0; -- never executed
end if;
end D;
begin
-- multiplication where one operand is universal real
P1 := P(0.05) * 200.0;
if P1 /= 10.00 then
Report.Failed ("1 - expected 10.00 got " & Pennies'Image (P1));
end if;
D1 := P(0.05) * 100.0;
if D1 /= 5.00 then
Report.Failed ("2 - expected 5.00 got " & Dollars'Image (D1));
end if;
F1 := P(0.05) * 50_000.0;
if F1 /= 2500.00 then
Report.Failed ("3 - expected 2500.0 got " & Franklins'Image (F1));
end if;
-- multiplication where both operands are decimal fixed
P1 := P(0.05) * D(-200.0);
if P1 /= -10.00 then
Report.Failed ("4 - expected -10.00 got " & Pennies'Image (P1));
end if;
D1 := P(0.05) * P(-100.0);
if D1 /= -5.00 then
Report.Failed ("5 - expected -5.00 got " & Dollars'Image (D1));
end if;
F1 := P(-0.05) * F(50_000.0);
if F1 /= -2500.00 then
Report.Failed ("6 - expected -2500.0 got " & Franklins'Image (F1));
end if;
-- division where one operand is universal real
P1 := P(0.05) / 0.001;
if P1 /= 50.00 then
Report.Failed ("7 - expected 50.00 got " & Pennies'Image (P1));
end if;
D1 := D(1000.0) / 3.0;
if D1 /= 333.00 then
Report.Failed ("8 - expected 333.00 got " & Dollars'Image (D1));
end if;
F1 := P(1234.56) / 0.0001;
if F1 /= 12345600.00 then
Report.Failed ("9 - expected 12345600.0 got " & Franklins'Image (F1));
end if;
-- division where both operands are decimal fixed
P1 := P(0.05) / D(1.0);
if P1 /= 0.05 then
Report.Failed ("10 - expected 0.05 got " & Pennies'Image (P1));
end if;
-- check for truncation toward 0
D1 := P(-101.00) / P(2.0);
if D1 /= -50.00 then
Report.Failed ("11 - expected -50.00 got " & Dollars'Image (D1));
end if;
P1 := P(-102.03) / P(-0.5);
if P1 /= 204.06 then
Report.Failed ("12 - expected 204.06 got " & Pennies'Image (P1));
end if;
F1 := P(876.54) / P(0.03);
if F1 /= 29200.00 then
Report.Failed ("13 - expected 29200.0 got " & Franklins'Image (F1));
end if;
exception
when others =>
Report.Failed ("unexpected exception in Check_1");
end Check_1;
generic
type Pennies is delta<> digits<>;
type Dollars is delta<> digits<>;
type Franklins is delta<> digits<>;
procedure Generic_Check;
procedure Generic_Check is
-- the following code is copied directly from the
-- above procedure Check_1
P1 : Pennies;
F1 : Franklins;
D1 : Dollars;
-- optimization thwarting functions
function P (X : Pennies) return Pennies is
begin
if Report.Ident_Bool (True) then
return X;
else
return 3.21; -- never executed
end if;
end P;
function F (X : Franklins) return Franklins is
begin
if Report.Ident_Bool (True) then
return X;
else
return 32100.0; -- never executed
end if;
end F;
function D (X : Dollars) return Dollars is
begin
if Report.Ident_Bool (True) then
return X;
else
return 321.0; -- never executed
end if;
end D;
begin
-- multiplication where one operand is universal real
P1 := P(0.05) * 200.0;
if P1 /= 10.00 then
Report.Failed ("1 - expected 10.00 got " & Pennies'Image (P1));
end if;
D1 := P(0.05) * 100.0;
if D1 /= 5.00 then
Report.Failed ("2 - expected 5.00 got " & Dollars'Image (D1));
end if;
F1 := P(0.05) * 50_000.0;
if F1 /= 2500.00 then
Report.Failed ("3 - expected 2500.0 got " & Franklins'Image (F1));
end if;
-- multiplication where both operands are decimal fixed
P1 := P(0.05) * D(-200.0);
if P1 /= -10.00 then
Report.Failed ("4 - expected -10.00 got " & Pennies'Image (P1));
end if;
D1 := P(0.05) * P(-100.0);
if D1 /= -5.00 then
Report.Failed ("5 - expected -5.00 got " & Dollars'Image (D1));
end if;
F1 := P(-0.05) * F(50_000.0);
if F1 /= -2500.00 then
Report.Failed ("6 - expected -2500.0 got " & Franklins'Image (F1));
end if;
-- division where one operand is universal real
P1 := P(0.05) / 0.001;
if P1 /= 50.00 then
Report.Failed ("7 - expected 50.00 got " & Pennies'Image (P1));
end if;
D1 := D(1000.0) / 3.0;
if D1 /= 333.00 then
Report.Failed ("8 - expected 333.00 got " & Dollars'Image (D1));
end if;
F1 := P(1234.56) / 0.0001;
if F1 /= 12345600.00 then
Report.Failed ("9 - expected 12345600.0 got " & Franklins'Image (F1));
end if;
-- division where both operands are decimal fixed
P1 := P(0.05) / D(1.0);
if P1 /= 0.05 then
Report.Failed ("10 - expected 0.05 got " & Pennies'Image (P1));
end if;
-- check for truncation toward 0
D1 := P(-101.00) / P(2.0);
if D1 /= -50.00 then
Report.Failed ("11 - expected -50.00 got " & Dollars'Image (D1));
end if;
P1 := P(-102.03) / P(-0.5);
if P1 /= 204.06 then
Report.Failed ("12 - expected 204.06 got " & Pennies'Image (P1));
end if;
F1 := P(876.54) / P(0.03);
if F1 /= 29200.00 then
Report.Failed ("13 - expected 29200.0 got " & Franklins'Image (F1));
end if;
end Generic_Check;
procedure Check_G6 is
Num_Digits : constant := 6;
type Pennies is delta 0.01 digits Num_Digits;
type Franklins is delta 100.0 digits Num_Digits;
type Dollars is delta 1.0 digits Num_Digits;
procedure G is new Generic_Check (Pennies, Dollars, Franklins);
begin
G;
end Check_G6;
procedure Check_G9 is
Num_Digits : constant := 9;
type Pennies is delta 0.01 digits Num_Digits;
type Franklins is delta 100.0 digits Num_Digits;
type Dollars is delta 1.0 digits Num_Digits;
procedure G is new Generic_Check (Pennies, Dollars, Franklins);
begin
G;
end Check_G9;
begin -- main
Report.Test ("CXG2023",
"Check the accuracy of multiplication and division" &
" of decimal fixed point numbers");
if Verbose then
Report.Comment ("starting Check_1");
end if;
Check_1;
if Verbose then
Report.Comment ("starting Check_G6");
end if;
Check_G6;
if Verbose then
Report.Comment ("starting Check_G9");
end if;
Check_G9;
Report.Result;
end CXG2023;
|
