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-- CD30004.A

--

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--     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

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--

--                                    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

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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

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--*

--

-- OBJECTIVE:

--

--

--      Check that the unspecified Size of static discrete

--      subtypes is the number of bits needed to represent each value

--      belonging to the subtype using an unbiased representation, where

--      space for a sign bit is provided only in the event the subtype

--      contains negative values.  Check that for first subtypes specified

--      Sizes are supported reflecting this representation. [ARM 95 13.3(55)].

--

-- TEST DESCRIPTION:

--      This test defines a few types that should have distinctly recognizable

--      sizes.  A packed record which should result in very specific bits

--      sizes for it's components is used to check the first part of the

--      objective. The second part of the objective is checked by giving

--      sizes for a similar set of types.

--

-- APPLICABILITY CRITERIA:

--      All implementations must attempt to compile this test.

--

--      For implementations validating against Systems Programming Annex (C):

--        this test must execute and report PASSED.

--

--      For implementations not validating against Annex C:

--        this test may report compile time errors at one or more points

--        indicated by "-- ANX-C RQMT", in which case it may be graded as inapplicable.

--        Otherwise, the test must execute and report PASSED.

--

-- CHANGE HISTORY:

--      22 JUL 95   SAIC   Initial version

--      06 MAY 96   SAIC   Revised for 2.1

--      26 FEB 97   PWB.CTA Added pragma Pack for type Check_Record

--      16 FEB 98   EDS    Modified Documentation.

--      06 JUL 99   RLB    Repaired comments, removed junk test cases.

--                         Added test cases to test that appropriate Size

--                         clauses are allowed.

--!

----------------------------------------------------------------- CD30004_0

package CD30004_0 is

--      Check that the unspecified Size of static discrete and fixed point

--      subtypes are the number of bits needed to represent each value

--      belonging to the subtype using an unbiased representation, where

--      space for a sign bit is provided only in the event the subtype

--      contains negative values.  Check that for first subtypes specified

--      Sizes are supported reflecting this representation.

  type Bits_2 is ( Zeroth_Bit, Fiercest_Bit, Secants_Bit, Threadless_Bit );

  type Bits_3 is range 0..2**3-1;

  type Bits_5 is range -2**4+1..2**4-1;  -- allow for 1's comp

  type Bits_14 is mod 2**14;

  type Check_Record is

  record

    B14 : Bits_14;

    B2  : Bits_2;

    B3  : Bits_3;

    B5  : Bits_5;

    C   : Character;

  end record;

  pragma Pack ( Check_Record );

  procedure TC_Check_Values;

  procedure TC_Check_Specified_Sizes;

end CD30004_0;

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

with Report;

with Impdef;

package body CD30004_0 is

  procedure TC_Check_Values is

  begin

    if Bits_2'Size /= 2 then

      if Impdef.Validating_Annex_C then

         Report.Failed("Bits_2'Size not 2 bits");

      else -- Recommended levels of support are not binding.

         Report.Comment("Bits_2'Size not 2 bits");

      end if;

    end if;

    if Bits_14'Size /= 14 then

      if Impdef.Validating_Annex_C then

         Report.Failed("Bits_14'Size not 14 bits");

      else

         Report.Comment("Bits_14'Size not 14 bits");

      end if;

    end if;

    if Bits_3'Size /= 3 then

      if Impdef.Validating_Annex_C then

         Report.Failed("Bits_3'Size not 3 bits");

      else

         Report.Comment("Bits_3'Size not 3 bits");

      end if;

    end if;

    if Bits_5'Size /= 5 then

      if Impdef.Validating_Annex_C then

         Report.Failed("Bits_5'Size not 5 bits");

      else

         Report.Comment("Bits_5'Size not 5 bits");

      end if;

    end if;

    if Character'Size /= 8 then

      Report.Failed("Character'Size not 8 bits");

    end if;

    if Wide_Character'Size /= 16 then

      Report.Failed("Wide_Character'Size not 16 bits");

    end if;

  end TC_Check_Values;

  type Spec_Bits_2 is ( Zeroth_Bit, Fiercest_Bit, Secants_Bit, Threadless_Bit );

  for Spec_Bits_2'Size use 2;                            -- ANX-C RQMT.

  type Spec_Bits_3 is range 0..2**3-1;

  for Spec_Bits_3'Size use 3;                            -- ANX-C RQMT.

  type Spec_Bits_5 is range -2**4+1..2**4-1;  -- allow for 1's comp

  for Spec_Bits_5'Size use 5;                            -- ANX-C RQMT.

  type Spec_Bits_14 is mod 2**14;

  for Spec_Bits_14'Size use 14;                          -- ANX-C RQMT.

  type Spec_Record is new Check_Record;

  for Spec_Record'Size use 64;                           -- ANX-C RQMT.

  procedure TC_Check_Specified_Sizes is

  begin

    if Spec_Record'Size /= 64 then

      Report.Failed("Spec_Record'Size not 64 bits");

    end if;

    if Spec_Bits_2'Size /= 2 then

      Report.Failed("Spec_Bits_2'Size not 2 bits");

    end if;

    if Spec_Bits_14'Size /= 14 then

      Report.Failed("Spec_Bits_14'Size not 14 bits");

    end if;

    if Spec_Bits_3'Size /= 3 then

      Report.Failed("Spec_Bits_3'Size not 3 bits");

    end if;

    if Spec_Bits_5'Size /= 5 then

      Report.Failed("Spec_Bits_5'Size not 5 bits");

    end if;

  end TC_Check_Specified_Sizes;

end CD30004_0;

------------------------------------------------------------------- CD30004

with Report;

with CD30004_0;

procedure CD30004 is

begin  -- Main test procedure.

  Report.Test ("CD30004", "Check that the unspecified Size of static " &

               "discrete and fixed point subtypes is the number of bits " &

               "needed to represent each value belonging to the subtype " &

               "using an unbiased representation, where space for a sign " &

               "bit is provided only in the event the subtype contains " &

               "negative values.  Check that for first subtypes " &

               "specified Sizes are supported reflecting this " &

               "representation.");

  CD30004_0.TC_Check_Values;

  CD30004_0.TC_Check_Specified_Sizes;

  Report.Result;

end CD30004;