-- CXF2002.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 the multiplying operators for a decimal fixed point type
-- return values that are integral multiples of the small of the type.
-- Check the case where the operand and result types are the same.
--
-- Check that if the mathematical result is between multiples of the
-- small of the result type, the result is truncated toward zero.
-- Check that if the attribute 'Round is applied to the mathematical
-- result, however, the result is rounded to the nearest multiple of
-- the small (away from zero if the result is midway between two
-- multiples of the small).
--
-- TEST DESCRIPTION:
-- Two decimal fixed point types are declared, one with a Machine_Radix
-- value of 2, and one with a value of 10. For each type, checks are
-- performed on the following operations, where the operand and result
-- types are the same:
--
-- - Multiplication.
-- - Multiplication, where the attribute 'Round is applied to the
-- result.
-- - Division.
-- - Division, where the attribute 'Round is applied to the result.
--
-- Each operation is performed within a loop, where one operand is
-- always the same variable. After the loop completes, the cumulative
-- total contained in this variable is compared with the expected
-- result.
--
-- APPLICABILITY CRITERIA:
-- This test is only applicable for a compiler attempting validation
-- for the Information Systems Annex.
--
--
-- CHANGE HISTORY:
-- 27 Mar 96 SAIC Prerelease version for ACVC 2.1.
--
--!
generic
type Decimal_Fixed is delta <> digits <>;
package CXF2002_0 is
procedure Multiply_And_Truncate (Balance : in out Decimal_Fixed;
Factor : in Decimal_Fixed);
procedure Divide_And_Truncate (Balance : in out Decimal_Fixed;
Divisor : in Decimal_Fixed);
procedure Multiply_And_Round (Balance : in out Decimal_Fixed;
Factor : in Decimal_Fixed);
procedure Divide_And_Round (Balance : in out Decimal_Fixed;
Divisor : in Decimal_Fixed);
end CXF2002_0;
--==================================================================--
package body CXF2002_0 is
procedure Multiply_And_Truncate (Balance : in out Decimal_Fixed;
Factor : in Decimal_Fixed) is
Interest : Decimal_Fixed;
begin
Interest := Factor * Balance; -- Fixed-fixed multiplication.
Balance := Balance + Interest;
end Multiply_And_Truncate;
procedure Divide_And_Truncate (Balance : in out Decimal_Fixed;
Divisor : in Decimal_Fixed) is
Interest : Decimal_Fixed;
begin
Interest := Balance / Divisor; -- Fixed-fixed division.
Balance := Balance + Interest;
end Divide_And_Truncate;
procedure Multiply_And_Round (Balance : in out Decimal_Fixed;
Factor : in Decimal_Fixed) is
Interest : Decimal_Fixed;
begin
-- Fixed-fixed multiplication.
Interest := Decimal_Fixed'Round ( Factor * Balance );
Balance := Balance + Interest;
end Multiply_And_Round;
procedure Divide_And_Round (Balance : in out Decimal_Fixed;
Divisor : in Decimal_Fixed) is
Interest : Decimal_Fixed;
begin
-- Fixed-fixed division.
Interest := Decimal_Fixed'Round ( Balance / Divisor );
Balance := Balance + Interest;
end Divide_And_Round;
end CXF2002_0;
--==================================================================--
package CXF2002_1 is
type Money_Radix2 is delta 0.01 digits 11; -- range -999,999,999.99 ..
for Money_Radix2'Machine_Radix use 2; -- +999,999,999.99
type Money_Radix10 is delta 0.01 digits 11; -- range -999,999,999.99 ..
for Money_Radix10'Machine_Radix use 10; -- +999,999,999.99
end CXF2002_1;
--==================================================================--
with CXF2002_0;
with CXF2002_1;
with Report;
procedure CXF2002 is
Loop_Count : constant := 300;
type Loop_Range is range 1 .. Loop_Count;
begin
Report.Test ("CXF2002", "Check decimal multiplication and division, and " &
"'Round, where the operand and result types are " &
"the same");
---=---=---=---=---=---=---=---=---=---=---
RADIX_2_SUBTESTS:
declare
package Radix_2 is new CXF2002_0 (CXF2002_1.Money_Radix2);
use type CXF2002_1.Money_Radix2;
begin
RADIX_2_MULTIPLICATION:
declare
Rate : constant CXF2002_1.Money_Radix2 := 0.12;
Period : constant Integer := 12;
Factor : CXF2002_1.Money_Radix2 := Rate / Period;
Initial : constant CXF2002_1.Money_Radix2 := 100_000.00;
Trunc_Expected : constant CXF2002_1.Money_Radix2 := 1_978_837.50;
Round_Expected : constant CXF2002_1.Money_Radix2 := 1_978_846.75;
Balance : CXF2002_1.Money_Radix2;
begin
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_2.Multiply_And_Truncate (Balance, Factor);
end loop;
if Balance /= Trunc_Expected then
Report.Failed ("Wrong result: Radix 2 multiply and truncate");
end if;
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_2.Multiply_And_Round (Balance, Factor);
end loop;
if Balance /= Round_Expected then
Report.Failed ("Wrong result: Radix 2 multiply and round");
end if;
---=---=---=---=---=---=---
end RADIX_2_MULTIPLICATION;
RADIX_2_DIVISION:
declare
Rate : constant CXF2002_1.Money_Radix2 := 0.25;
Period : constant Integer := 12;
Factor : CXF2002_1.Money_Radix2 := Rate / Period;
Divisor : constant CXF2002_1.Money_Radix2 := 1.0 / Factor;
Initial : constant CXF2002_1.Money_Radix2 := 5_500.36;
Trunc_Expected : constant CXF2002_1.Money_Radix2 := 2_091_332.87;
Round_Expected : constant CXF2002_1.Money_Radix2 := 2_091_436.88;
Balance : CXF2002_1.Money_Radix2;
begin
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_2.Divide_And_Truncate (Balance, Divisor);
end loop;
if Balance /= Trunc_Expected then
Report.Failed ("Wrong result: Radix 2 divide and truncate");
end if;
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_2.Divide_And_Round (Balance, Divisor);
end loop;
if Balance /= Round_Expected then
Report.Failed ("Wrong result: Radix 2 divide and round");
end if;
---=---=---=---=---=---=---
end RADIX_2_DIVISION;
end RADIX_2_SUBTESTS;
---=---=---=---=---=---=---=---=---=---=---
RADIX_10_SUBTESTS:
declare
package Radix_10 is new CXF2002_0 (CXF2002_1.Money_Radix10);
use type CXF2002_1.Money_Radix10;
begin
RADIX_10_MULTIPLICATION:
declare
Rate : constant CXF2002_1.Money_Radix10 := 0.37;
Period : constant Integer := 12;
Factor : CXF2002_1.Money_Radix10 := Rate / Period;
Initial : constant CXF2002_1.Money_Radix10 := 459.33;
Trunc_Expected : constant CXF2002_1.Money_Radix10 := 3_259_305.54;
Round_Expected : constant CXF2002_1.Money_Radix10 := 3_260_544.11;
Balance : CXF2002_1.Money_Radix10;
begin
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_10.Multiply_And_Truncate (Balance, Factor);
end loop;
if Balance /= Trunc_Expected then
Report.Failed ("Wrong result: Radix 10 multiply and truncate");
end if;
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_10.Multiply_And_Round (Balance, Factor);
end loop;
if Balance /= Round_Expected then
Report.Failed ("Wrong result: Radix 10 multiply and round");
end if;
---=---=---=---=---=---=---
end RADIX_10_MULTIPLICATION;
RADIX_10_DIVISION:
declare
Rate : constant CXF2002_1.Money_Radix10 := 0.15;
Period : constant Integer := 12;
Factor : CXF2002_1.Money_Radix10 := Rate / Period;
Divisor : constant CXF2002_1.Money_Radix10 := 1.0 / Factor;
Initial : constant CXF2002_1.Money_Radix10 := 29_842.08;
Trunc_Expected : constant CXF2002_1.Money_Radix10 := 590_519.47;
Round_Expected : constant CXF2002_1.Money_Radix10 := 590_528.98;
Balance : CXF2002_1.Money_Radix10;
begin
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_10.Divide_And_Truncate (Balance, Divisor);
end loop;
if Balance /= Trunc_Expected then
Report.Failed ("Wrong result: Radix 10 divide and truncate");
end if;
---=---=---=---=---=---=---
Balance := Initial;
for I in Loop_Range loop
Radix_10.Divide_And_Round (Balance, Divisor);
end loop;
if Balance /= Round_Expected then
Report.Failed ("Wrong result: Radix 10 divide and round");
end if;
---=---=---=---=---=---=---
end RADIX_10_DIVISION;
end RADIX_10_SUBTESTS;
---=---=---=---=---=---=---=---=---=---=---
Report.Result;
end CXF2002;