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-- CXF2005.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 one operand is of the predefined type Integer.

--

-- TEST DESCRIPTION:

--      Two decimal fixed point types A and B are declared, one with a

--      Machine_Radix value of 2, and one with a value of 10. A variable of

--      each type is multiplied repeatedly by a series of different Integer

--      values. A cumulative result is kept and compared to an expected

--      final result. Similar checks are performed for division.

--

-- APPLICABILITY CRITERIA:

--      This test is only applicable for a compiler attempting validation

--      for the Information Systems Annex.

--

--

-- CHANGE HISTORY:

--      28 Mar 96   SAIC    Prerelease version for ACVC 2.1.

--

--!

generic

   type Decimal_Fixed  is delta <> digits <>;

package CXF2005_0 is

   function Multiply (Operand  : Decimal_Fixed;

                      Interval : Integer) return Decimal_Fixed;

   function Divide   (Operand  : Decimal_Fixed;

                      Interval : Integer) return Decimal_Fixed;

end CXF2005_0;

     --==================================================================--

package body CXF2005_0 is

   function Multiply (Operand  : Decimal_Fixed;

                      Interval : Integer) return Decimal_Fixed is

   begin

      return Operand * Interval;  -- Fixed-Integer multiplication.

   end Multiply;

   function Divide (Operand  : Decimal_Fixed;

                    Interval : Integer) return Decimal_Fixed is

   begin

      return Operand / Interval;  -- Fixed-Integer division.

   end Divide;

end CXF2005_0;

     --==================================================================--

package CXF2005_1 is

               ---=---=---=---=---=---=---=---=---=---=---

   type Interest_Rate is delta 0.001 range 0.0 .. 1_000.0;

   for Interest_Rate'Small use 0.001;            -- Power of 10.

               ---=---=---=---=---=---=---=---=---=---=---

   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

   function Factor (Rate     : Interest_Rate;

                    Interval : Integer) return Money_Radix2;

               ---=---=---=---=---=---=---=---=---=---=---

   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

   function Factor (Rate   : Interest_Rate;

                    Interval : Integer) return Money_Radix10;

               ---=---=---=---=---=---=---=---=---=---=---

end CXF2005_1;

     --==================================================================--

package body CXF2005_1 is

               ---=---=---=---=---=---=---=---=---=---=---

   function Factor (Rate   : Interest_Rate;

                    Interval : Integer) return Money_Radix2 is

   begin

      return Money_Radix2( Rate / Interval );

   end Factor;

               ---=---=---=---=---=---=---=---=---=---=---

   function Factor (Rate   : Interest_Rate;

                    Interval : Integer) return Money_Radix10 is

   begin

      return Money_Radix10( Rate / Interval );

   end Factor;

               ---=---=---=---=---=---=---=---=---=---=---

end CXF2005_1;

     --==================================================================--

with CXF2005_0;

with CXF2005_1;

with Report;

procedure CXF2005 is

   Loop_Count : constant := 25_000;

   type Loop_Range is range 1 .. Loop_Count;

begin

   Report.Test ("CXF2005", "Check decimal multiplication and division, " &

                           "where one operand type is Integer");

               ---=---=---=---=---=---=---=---=---=---=---

   RADIX_2_SUBTESTS:

   declare

      package Radix_2 is new CXF2005_0 (CXF2005_1.Money_Radix2);

      use type CXF2005_1.Money_Radix2;

   begin

      RADIX_2_MULTIPLICATION:

      declare

         Rate           : constant CXF2005_1.Interest_Rate := 0.127;

         Period         : constant Integer                 := 12;

         Expected       : constant CXF2005_1.Money_Radix2  := 2_624.88;

         Balance        :          CXF2005_1.Money_Radix2  := 1_000.00;

         Operand        :          CXF2005_1.Money_Radix2;

         Increment      :          CXF2005_1.Money_Radix2;

         Interval       :          Integer;

      begin

         for I in Loop_Range loop

            Interval  := (Integer(I) mod Period) + 1;  -- Range from 1 to 12.

            Operand   := CXF2005_1.Factor (Rate, Period);

            Increment := Radix_2.Multiply (Operand, Interval);

            Balance   := Balance + Increment;

         end loop;

         if Balance /= Expected then

            Report.Failed ("Error: Radix 2 multiply");

         end if;

      end RADIX_2_MULTIPLICATION;

      RADIX_2_DIVISION:

      declare

         Rate           : constant CXF2005_1.Interest_Rate := 0.377;

         Period         : constant Integer                 := 12;

         Expected       : constant CXF2005_1.Money_Radix2  :=  36_215.58;

         Balance        :          CXF2005_1.Money_Radix2  := 456_985.01;

         Operand        :          CXF2005_1.Money_Radix2;

         Increment      :          CXF2005_1.Money_Radix2;

         Interval       :          Integer;

      begin

         for I in Loop_Range loop

            Interval  := (Integer(I+1000) mod (200*Period)) + 1; -- 1 .. 2400.

            Operand   := CXF2005_1.Factor (Rate, Period);

            Increment := Radix_2.Divide (Balance, Interval);

            Balance   := Balance - (Operand * Increment);

         end loop;

         if Balance /= Expected then

            Report.Failed ("Error: Radix 2 divide");

         end if;

      end RADIX_2_DIVISION;

   end RADIX_2_SUBTESTS;

               ---=---=---=---=---=---=---=---=---=---=---

   RADIX_10_SUBTESTS:

   declare

      package Radix_10 is new CXF2005_0 (CXF2005_1.Money_Radix10);

      use type CXF2005_1.Money_Radix10;

   begin

      RADIX_10_MULTIPLICATION:

      declare

         Rate           : constant CXF2005_1.Interest_Rate := 0.721;

         Period         : constant Integer                 := 12;

         Expected       : constant CXF2005_1.Money_Radix10 := 9_875.62;

         Balance        :          CXF2005_1.Money_Radix10 :=   126.34;

         Operand        :          CXF2005_1.Money_Radix10;

         Increment      :          CXF2005_1.Money_Radix10;

         Interval       :          Integer;

      begin

         for I in Loop_Range loop

            Interval  := (Integer(I) mod Period) + 1;  -- Range from 1 to 12.

            Operand   := CXF2005_1.Factor (Rate, Period);

            Increment := Radix_10.Multiply (Operand, Interval);

            Balance   := Balance + Increment;

         end loop;

         if Balance /= Expected then

            Report.Failed ("Error: Radix 10 multiply");

         end if;

      end RADIX_10_MULTIPLICATION;

      RADIX_10_DIVISION:

      declare

         Rate           : constant CXF2005_1.Interest_Rate := 0.547;

         Period         : constant Integer                 := 12;

         Expected       : constant CXF2005_1.Money_Radix10 :=  26_116.37;

         Balance        :          CXF2005_1.Money_Radix10 := 770_082.46;

         Operand        :          CXF2005_1.Money_Radix10;

         Increment      :          CXF2005_1.Money_Radix10;

         Interval       :          Integer;

      begin

         for I in Loop_Range loop

            Interval  := (Integer(I+1000) mod (200*Period)) + 1; -- 1 .. 2400.

            Operand   := CXF2005_1.Factor (Rate, Period);

            Increment := Radix_10.Divide (Balance, Interval);

            Balance   := Balance - (Operand * Increment);

         end loop;

         if Balance /= Expected then

            Report.Failed ("Error: Radix 10 divide");

         end if;

      end RADIX_10_DIVISION;

   end RADIX_10_SUBTESTS;

               ---=---=---=---=---=---=---=---=---=---=---

   Report.Result;

end CXF2005;