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-- C3A0002.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 access to subprogram type can be used to select and
-- invoke procedures with appropriate arguments dynamically.
--
-- TEST DESCRIPTION:
-- Declare an access to procedure type in a package specification.
-- Declare three different log procedures that can be referred to by
-- the access to procedure type.
--
-- In the main program, call each procedure indirectly by dereferencing
-- the access value.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 05 APR 96 SAIC RM reference change for 2.1
--
--
--!
package C3A0002_0 is
TC_Call_Tag : Natural := 0;
Return_Num : Float := 0.0;
-- Type accesses to any log procedure
type Log_Procedure_Ptr is access procedure
(Angle : in Float);
procedure Log_Calc_Fast (Angle : in Float);
procedure Log_Calc_Acc (Angle : in Float);
procedure Log_Calc_Table (Angle : in Float);
end C3A0002_0;
-----------------------------------------------------------------------------
package body C3A0002_0 is
procedure Log_Calc_Fast (Angle : in Float) is
begin
TC_Call_Tag := 1;
Return_Num := Angle;
end Log_Calc_Fast;
procedure Log_Calc_Acc (Angle : in Float) is
begin
TC_Call_Tag := 2;
Return_Num := Angle;
end Log_Calc_Acc;
procedure Log_Calc_Table (Angle : in Float) is
begin
TC_Call_Tag := 3;
Return_Num := Angle;
end Log_Calc_Table;
end C3A0002_0;
-----------------------------------------------------------------------------
with Report;
with C3A0002_0;
procedure C3A0002 is
Log_Access : C3A0002_0.Log_Procedure_Ptr;
Theta : Float := 0.0;
begin
Report.Test ("C3A0002", "Check that access to subprogram type can be "
& "used to select and invoke procedures with "
& "appropriate arguments dynamically" );
Log_Access := C3A0002_0.Log_Calc_Fast'Access;
-- Invoking Log procedure designated by access value
Log_Access (Theta);
If C3A0002_0.TC_Call_Tag /= 1 or C3A0002_0.Return_Num /= 0.0 then
Report.Failed ("Incorrect Log_Calc_Fast result");
end if;
Theta := 1.0;
Log_Access := C3A0002_0.Log_Calc_Acc'Access;
-- Invoking Log procedure designated by access value
Log_Access (Theta);
If C3A0002_0.TC_Call_Tag /= 2 or C3A0002_0.Return_Num /= 1.0 then
Report.Failed ("Incorrect Log_Calc_Acc result");
end if;
Theta := -1.0;
Log_Access := C3A0002_0.Log_Calc_Table'Access;
-- Invoking Log procedure designated by access value
Log_Access (Theta);
If C3A0002_0.TC_Call_Tag /= 3 or C3A0002_0.Return_Num /= -1.0 then
Report.Failed ("Incorrect Log_Calc_Table result");
end if;
Report.Result;
end C3A0002;
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