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--- 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;
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