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-- CXG2024.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
-- and binary fixed point numbers that result in a
-- decimal fixed point type produce acceptable results.
--
-- TEST DESCRIPTION:
-- Multiplication and division of mixed binary and decimal
-- values are performed. Identity functions are used so
-- that the operands of the expressions will not be seen
-- as static by the compiler.
--
-- 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:
-- 4 Apr 96 SAIC Initial release for 2.1
-- 17 Aug 96 SAIC Removed checks for close results
--
--!
with System;
with Report;
procedure CXG2024 is
procedure Do_Check is
Num_Digits : constant := 9;
type Pennies is delta 0.01 digits Num_Digits;
type Dollars is delta 1.0 digits Num_Digits;
type Signed_Sixteenths is delta 0.0625
range -2.0 ** (System.Max_Mantissa-5) ..
2.0 ** (System.Max_Mantissa-5) - 1.0;
type Unsigned_Sixteenths is delta 0.0625
range 0.0 .. 2.0 ** (System.Max_Mantissa-4) - 1.0;
P1 : Pennies;
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 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;
function US (X : Unsigned_Sixteenths) return Unsigned_Sixteenths is
begin
if Report.Ident_Bool (True) then
return X;
else
return 321.0; -- never executed
end if;
end US;
function SS (X : Signed_Sixteenths) return Signed_Sixteenths is
begin
if Report.Ident_Bool (True) then
return X;
else
return 321.0; -- never executed
end if;
end SS;
begin
P1 := P(0.05) * SS(-200.0);
if P1 /= -10.00 then
Report.Failed ("1 - expected -10.00 got " & Pennies'Image (P1));
end if;
D1 := P(0.05) * SS(-100.0);
if D1 /= -5.00 then
Report.Failed ("2 - expected -5.00 got " & Dollars'Image (D1));
end if;
P1 := P(0.05) * US(200.0);
if P1 /= 10.00 then
Report.Failed ("3 - expected 10.00 got " & Pennies'Image (P1));
end if;
D1 := P(-0.05) * US(100.0);
if D1 /= -5.00 then
Report.Failed ("4 - expected -5.00 got " & Dollars'Image (D1));
end if;
P1 := P(0.05) / US(1.0);
if P1 /= 0.05 then
Report.Failed ("6 - expected 0.05 got " & Pennies'Image (P1));
end if;
-- check rounding
D1 := Dollars'Round (Pennies (P(-101.00) / US(2.0)));
if D1 /= -51.00 then
Report.Failed ("11 - expected -51.00 got " & Dollars'Image (D1));
end if;
D1 := Dollars'Round (Pennies (P(101.00) / US(2.0)));
if D1 /= 51.00 then
Report.Failed ("12 - expected 51.00 got " & Dollars'Image (D1));
end if;
D1 := Dollars'Round (Pennies (SS(-101.00) / P(2.0)));
if D1 /= -51.00 then
Report.Failed ("13 - expected -51.00 got " & Dollars'Image (D1));
end if;
D1 := Dollars'Round (Pennies (US(101.00) / P(2.0)));
if D1 /= 51.00 then
Report.Failed ("14 - expected 51.00 got " & Dollars'Image (D1));
end if;
P1 := P(-102.03) / SS(-0.5);
if P1 /= 204.06 then
Report.Failed ("15 - expected 204.06 got " & Pennies'Image (P1));
end if;
exception
when others =>
Report.Failed ("unexpected exception in Do_Check");
end Do_Check;
begin -- main
Report.Test ("CXG2024",
"Check the accuracy of multiplication and division" &
" of mixed decimal and binary fixed point numbers");
Do_Check;
Report.Result;
end CXG2024;
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