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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [ada/] [acats/] [tests/] [c3/] [c3a0010.a] - Blame information for rev 294

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1 294 jeremybenn
-- C3A0010.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 an access-to-subprogram type in a generic instance may be
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--      used to declare access-to-subprogram objects which invoke subprograms
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--      in the instance.
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--
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-- TEST DESCRIPTION:
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--      Declare a numeric type in the visible part of a generic package.
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--      Declare two different math procedures that can be referred to by
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--      the access to procedure type.
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--
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--      In the main program, instantiate the generic.  Declare an access
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--      to procedure type.  Call each procedure indirectly by dereferencing
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--      the access value.
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--
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--
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-- CHANGE HISTORY:
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--      06 Dec 94   SAIC    ACVC 2.0
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--      05 APR 96   SAIC    Header correction for 2.1
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--
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--!
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generic
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   type Real_Num is digits <>;
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package C3A0010_0 is
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   -- Type accesses to any math procedure
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   type Math_Procedure_Ptr is access procedure
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       (First_Num, Second_Num : in  Real_Num;
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        Result_Num            : out Real_Num);
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   procedure Add      (First_Num, Second_Num : in  Real_Num;
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                       Result_Num            : out Real_Num);
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   procedure Subtract (First_Num, Second_Num : in  Real_Num;
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                       Result_Num            : out Real_Num);
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end C3A0010_0;
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-----------------------------------------------------------------------------
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package body C3A0010_0 is
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   procedure Add (First_Num, Second_Num : in  Real_Num;
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                  Result_Num            : out Real_Num) is
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   begin
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      Result_Num := First_Num + Second_Num;
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   end Add;
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   procedure Subtract (First_Num, Second_Num : in  Real_Num;
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                       Result_Num            : out Real_Num) is
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   begin
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      Result_Num := First_Num - Second_Num;
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   end Subtract;
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end C3A0010_0;
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-----------------------------------------------------------------------------
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with Report;
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with C3A0010_0;
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procedure C3A0010 is
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   type Real is digits 2;
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   subtype Math_Float is Real range -10.0 .. 10.0;
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   package Math_Pk is new C3A0010_0 (Real_Num => Math_Float);
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   Math_Access : Math_Pk.Math_Procedure_Ptr;
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   Total_Num   : Math_Float := 0.0;
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   First_Num   : Math_Float := 1.0;
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   Second_Num  : Math_Float := 2.0;
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   procedure Max( A_Num, B_Num: in Math_Float; Result : out Math_Float ) is
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   begin
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      if A_Num > B_Num then
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        Result := A_Num;
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      else
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        Result := B_Num;
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      end if;
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   end Max;
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   procedure Due_Process( Process: Math_Pk.Math_Procedure_Ptr ) is
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   begin
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     Process(First_Num, Second_Num, Total_Num);
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   end Due_Process;
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begin
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   Report.Test ("C3A0010", "Check that an access-to-subprogram type in a "
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                         & "generic instance may be used to declare "
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                         & "access-to-subprogram objects which invoke "
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                         & "subprograms in the instance");
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-- Check for correct defaulting
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   if Math_Pk."/="( Math_Access, null) then
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     Report.Failed("subprogram access type object not initialized to null");
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   end if;
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   Math_Access := Math_Pk.Add'Access;
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   -- Invoking Add procedure designated by access value
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   Due_Process( Math_Access );
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   If Total_Num /= 3.0 then
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      Report.Failed ("Incorrect Add result");
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   end if;
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   Math_Access := Math_Pk.Subtract'Access;
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   Due_Process( Math_Access );
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   If Total_Num /= -1.0 then
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      Report.Failed ("Incorrect Subtract result");
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   end if;
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   Math_Access := Max'Access;
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   Due_Process( Math_Access );
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   If Total_Num /= 2.0 then
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      Report.Failed ("Incorrect Max result");
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   end if;
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   Report.Result;
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end C3A0010;

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