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jeremybenn |
-- CXF2003.A
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--
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-- Grant of Unlimited Rights
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--
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-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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-- unlimited rights in the software and documentation contained herein.
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-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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-- this public release, the Government intends to confer upon all
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-- recipients unlimited rights equal to those held by the Government.
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-- These rights include rights to use, duplicate, release or disclose the
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-- released technical data and computer software in whole or in part, in
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-- any manner and for any purpose whatsoever, and to have or permit others
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-- to do so.
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--
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-- DISCLAIMER
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--
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-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- OBJECTIVE:
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-- Check that the multiplying operators for a decimal fixed point type
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-- return values that are integral multiples of the small of the type.
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-- Check the case where the two operands are of different decimal
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-- fixed point types.
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--
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-- Check that if the mathematical result is between multiples of the
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-- small of the result type, the result is truncated toward zero.
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-- Check that if the attribute 'Round is applied to the mathematical
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-- result, however, the result is rounded to the nearest multiple of
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-- the small (away from zero if the result is midway between two
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-- multiples of the small).
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--
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-- TEST DESCRIPTION:
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-- Two decimal fixed point types A and B are declared, one with a
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-- Machine_Radix value of 2, and one with a value of 10. A third decimal
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-- fixed point type C is declared with digits and delta values different
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-- from those of A and B. For type A (and B), checks are performed
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-- on the following operations, where one operand type is C, and the
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-- other operand type and the result type is A (or B):
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--
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-- - Multiplication.
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-- - Multiplication, where the attribute 'Round is applied to the
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-- result.
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-- - Division.
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-- - Division, where the attribute 'Round is applied to the result.
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--
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-- Each operation is performed within a loop, where one operand is
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-- always the same variable. After the loop completes, the cumulative
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-- total contained in this variable is compared with the expected
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-- result.
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--
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-- APPLICABILITY CRITERIA:
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-- This test is only applicable for a compiler attempting validation
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-- for the Information Systems Annex.
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--
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--
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-- CHANGE HISTORY:
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-- 22 Mar 96 SAIC Prerelease version for ACVC 2.1.
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--
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--!
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generic
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type Decimal_Fixed_1 is delta <> digits <>;
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type Decimal_Fixed_2 is delta <> digits <>;
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package CXF2003_0 is
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procedure Multiply_And_Truncate (Balance : in out Decimal_Fixed_1;
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Factor : in Decimal_Fixed_2);
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procedure Divide_And_Truncate (Balance : in out Decimal_Fixed_1;
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Divisor : in Decimal_Fixed_2);
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procedure Multiply_And_Round (Balance : in out Decimal_Fixed_1;
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Factor : in Decimal_Fixed_2);
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procedure Divide_And_Round (Balance : in out Decimal_Fixed_1;
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Divisor : in Decimal_Fixed_2);
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end CXF2003_0;
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--==================================================================--
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package body CXF2003_0 is
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procedure Multiply_And_Truncate (Balance : in out Decimal_Fixed_1;
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Factor : in Decimal_Fixed_2) is
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Interest : Decimal_Fixed_1;
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begin
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Interest := Factor * Balance; -- Fixed-fixed multiplication.
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Balance := Balance + Interest;
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end Multiply_And_Truncate;
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procedure Divide_And_Truncate (Balance : in out Decimal_Fixed_1;
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Divisor : in Decimal_Fixed_2) is
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Interest : Decimal_Fixed_1;
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begin
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Interest := Balance / Divisor; -- Fixed-fixed division.
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Balance := Balance + Interest;
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end Divide_And_Truncate;
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procedure Multiply_And_Round (Balance : in out Decimal_Fixed_1;
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Factor : in Decimal_Fixed_2) is
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Interest : Decimal_Fixed_1;
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begin
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-- Fixed-fixed multiplication.
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Interest := Decimal_Fixed_1'Round ( Factor * Balance );
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Balance := Balance + Interest;
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end Multiply_And_Round;
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procedure Divide_And_Round (Balance : in out Decimal_Fixed_1;
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Divisor : in Decimal_Fixed_2) is
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Interest : Decimal_Fixed_1;
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begin
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-- Fixed-fixed division.
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Interest := Decimal_Fixed_1'Round ( Balance / Divisor );
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Balance := Balance + Interest;
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end Divide_And_Round;
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end CXF2003_0;
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--==================================================================--
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package CXF2003_1 is
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type Money_Radix2 is delta 0.01 digits 11; -- range -999,999,999.99 ..
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for Money_Radix2'Machine_Radix use 2; -- +999,999,999.99
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type Money_Radix10 is delta 0.01 digits 11; -- range -999,999,999.99 ..
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for Money_Radix10'Machine_Radix use 10; -- +999,999,999.99
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type Interest_Rate is delta 0.00001 digits 9; -- range -9999.99999 ..
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-- +9999.99999
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end CXF2003_1;
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--==================================================================--
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with CXF2003_0;
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with CXF2003_1;
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with Report;
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procedure CXF2003 is
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Loop_Count : constant := 1825;
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type Loop_Range is range 1 .. Loop_Count;
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begin
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Report.Test ("CXF2003", "Check decimal multiplication and division, and " &
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"'Round, where the operand types are different");
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---=---=---=---=---=---=---=---=---=---=---
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RADIX_2_SUBTESTS:
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declare
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package Radix_2 is new CXF2003_0 (CXF2003_1.Money_Radix2,
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CXF2003_1.Interest_Rate);
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use type CXF2003_1.Money_Radix2;
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use type CXF2003_1.Interest_Rate;
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begin
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RADIX_2_MULTIPLICATION:
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declare
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Rate : CXF2003_1.Interest_Rate := 0.198;
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Period : Integer := 365;
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Factor : CXF2003_1.Interest_Rate := Rate / Period;
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Initial : constant CXF2003_1.Money_Radix2 := 1_000.00;
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Trunc_Expected : constant CXF2003_1.Money_Radix2 := 2_662.94;
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Round_Expected : constant CXF2003_1.Money_Radix2 := 2_678.34;
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Balance : CXF2003_1.Money_Radix2;
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begin
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_2.Multiply_And_Truncate (Balance, Factor);
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end loop;
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if Balance /= Trunc_Expected then
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Report.Failed ("Wrong result: Radix 2 multiply and truncate");
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end if;
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_2.Multiply_And_Round (Balance, Factor);
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end loop;
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if Balance /= Round_Expected then
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Report.Failed ("Wrong result: Radix 2 multiply and round");
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end if;
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---=---=---=---=---=---=---
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end RADIX_2_MULTIPLICATION;
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RADIX_2_DIVISION:
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declare
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Rate : CXF2003_1.Interest_Rate := 0.129;
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Period : Integer := 365;
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Factor : CXF2003_1.Interest_Rate := Rate / Period;
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Divisor : CXF2003_1.Interest_Rate := 1.0 / Factor;
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Initial : constant CXF2003_1.Money_Radix2 := 14_626.52;
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Trunc_Expected : constant CXF2003_1.Money_Radix2 := 27_688.26;
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Round_Expected : constant CXF2003_1.Money_Radix2 := 27_701.12;
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Balance : CXF2003_1.Money_Radix2;
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begin
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_2.Divide_And_Truncate (Balance, Divisor);
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end loop;
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if Balance /= Trunc_Expected then
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Report.Failed ("Wrong result: Radix 2 divide and truncate");
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end if;
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_2.Divide_And_Round (Balance, Divisor);
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end loop;
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if Balance /= Round_Expected then
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Report.Failed ("Wrong result: Radix 2 divide and round");
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end if;
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---=---=---=---=---=---=---
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end RADIX_2_DIVISION;
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end RADIX_2_SUBTESTS;
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---=---=---=---=---=---=---=---=---=---=---
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RADIX_10_SUBTESTS:
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declare
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package Radix_10 is new CXF2003_0 (CXF2003_1.Money_Radix10,
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CXF2003_1.Interest_Rate);
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use type CXF2003_1.Money_Radix10;
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use type CXF2003_1.Interest_Rate;
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begin
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RADIX_10_MULTIPLICATION:
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declare
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Rate : CXF2003_1.Interest_Rate := 0.063;
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Period : Integer := 365;
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Factor : CXF2003_1.Interest_Rate := Rate / Period;
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Initial : constant CXF2003_1.Money_Radix10 := 314_036.10;
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Trunc_Expected : constant CXF2003_1.Money_Radix10 := 428_249.48;
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Round_Expected : constant CXF2003_1.Money_Radix10 := 428_260.52;
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Balance : CXF2003_1.Money_Radix10;
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begin
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_10.Multiply_And_Truncate (Balance, Factor);
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end loop;
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if Balance /= Trunc_Expected then
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Report.Failed ("Wrong result: Radix 10 multiply and truncate");
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end if;
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_10.Multiply_And_Round (Balance, Factor);
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end loop;
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if Balance /= Round_Expected then
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Report.Failed ("Wrong result: Radix 10 multiply and round");
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end if;
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---=---=---=---=---=---=---
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end RADIX_10_MULTIPLICATION;
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RADIX_10_DIVISION:
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declare
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Rate : CXF2003_1.Interest_Rate := 0.273;
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Period : Integer := 365;
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Factor : CXF2003_1.Interest_Rate := Rate / Period;
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Divisor : CXF2003_1.Interest_Rate := 1.0 / Factor;
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Initial : constant CXF2003_1.Money_Radix10 := 25.72;
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Trunc_Expected : constant CXF2003_1.Money_Radix10 := 79.05;
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Round_Expected : constant CXF2003_1.Money_Radix10 := 97.46;
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Balance : CXF2003_1.Money_Radix10;
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begin
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_10.Divide_And_Truncate (Balance, Divisor);
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end loop;
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if Balance /= Trunc_Expected then
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Report.Failed ("Wrong result: Radix 10 divide and truncate");
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end if;
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---=---=---=---=---=---=---
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Balance := Initial;
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for I in Loop_Range loop
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Radix_10.Divide_And_Round (Balance, Divisor);
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end loop;
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if Balance /= Round_Expected then
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Report.Failed ("Wrong result: Radix 10 divide and round");
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end if;
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---=---=---=---=---=---=---
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end RADIX_10_DIVISION;
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end RADIX_10_SUBTESTS;
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---=---=---=---=---=---=---=---=---=---=---
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Report.Result;
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end CXF2003;
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