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-- C74211B.ADA

--                             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.

--*

-- CHECK THAT IMPLICITLY DECLARED INEQUALITY WHICH ACCOMPANIES AN

-- EXPLICIT DECLARATION OF EQUALITY HIDES OTHER IMPLICITLY DECLARED

-- HOMOGRAPHS, AND THAT DERIVED INEQUALITY HIDES PREDEFINED INEQUALITY.

-- DSJ 4/29/83

-- JBG 9/23/83

WITH REPORT;

PROCEDURE C74211B IS

     USE REPORT;

BEGIN

     TEST( "C74211B", "CHECK THAT HIDING OF IMPLICITLY DECLARED " &

                      "OPERATORS AND DERIVED SUBPROGRAMS IS DONE " &

                      "CORRECTLY REGARDLESS OF ORDER OF DECL'S");

     DECLARE

          PACKAGE P1 IS

               TYPE LT1 IS LIMITED PRIVATE;

               FUNCTION "="(L, R : LT1) RETURN BOOLEAN;

               FUNCTION LT1_VALUE_2 RETURN LT1;

               FUNCTION LT1_VALUE_4 RETURN LT1;

               TYPE LT2 IS LIMITED PRIVATE;

          PRIVATE

               TYPE LT1 IS RANGE 1 .. 10;

               TYPE LT2 IS RANGE 1 .. 10;

          END P1;

          USE P1;

          PACKAGE P2 IS

               TYPE LT3 IS LIMITED PRIVATE;

               TYPE LT4 IS NEW LT1;

          PRIVATE

               FUNCTION "=" (L, R : LT3) RETURN BOOLEAN;

               TYPE LT3 IS NEW LT1;

          END P2;

          USE P2;

          PACKAGE BODY P1 IS

               A , B : CONSTANT LT1 := 4;

               C , D : CONSTANT LT2 := 6;

               FUNCTION "=" (L, R : LT1) RETURN BOOLEAN IS

               BEGIN

                    RETURN INTEGER(L) /= INTEGER(R);

               END "=";

               FUNCTION LT1_VALUE_2 RETURN LT1 IS

               BEGIN

                    RETURN 2;

               END LT1_VALUE_2;

               FUNCTION LT1_VALUE_4 RETURN LT1 IS

               BEGIN

                    RETURN 4;

               END LT1_VALUE_4;

          BEGIN

               IF A = B THEN

                    FAILED ("PREDEFINED EQUALITY NOT HIDDEN BY " &

                            "EXPLICIT DECLARATION - LT1");

               END IF;

               IF C /= D  THEN

                    FAILED ("WRONG PREDEFINED OPERATION - T2");

               END IF;

          END P1;

          PACKAGE BODY P2 IS

               FUNCTION U RETURN LT3 IS

               BEGIN

                    RETURN LT1_VALUE_2;

               END U;

               FUNCTION V RETURN LT3 IS

               BEGIN

                    RETURN LT1_VALUE_4;

               END V;

               FUNCTION W RETURN LT4 IS

               BEGIN

                    RETURN LT1_VALUE_2;

               END W;

               FUNCTION X RETURN LT4 IS

               BEGIN

                    RETURN LT1_VALUE_4;

               END X;

               FUNCTION "=" (L, R : LT3) RETURN BOOLEAN IS

               BEGIN

                    RETURN NOT (LT1(L) = LT1(R));

               END "=";

          BEGIN

               IF NOT (U /= V) THEN

                    FAILED ("DERIVED SUBPROGRAM NOT HIDDEN BY " &

                            "IMPLICITLY DECLARED INEQUALITY " &

                            "FROM EXPLICITLY DECLARED EQUALITY");

               END IF;

               IF NOT (LT3(W) = U) THEN

                    FAILED ("DERIVED SUBPROGRAM NOT HIDDEN BY " &

                            "EXPLICIT DECLARATION - '=' ");

               END IF;

               IF W /= X THEN

                    FAILED ("PREDEFINED OPERATOR NOT HIDDEN BY " &

                            "DERIVED SUBPROGRAM - '/=' ");

               END IF;

               IF NOT ( X = W ) THEN

                    FAILED ("PREDEFINED OPERATOR NOT HIDDEN BY " &

                            "DERIVED SUBPROGRAM - '=' ");

               END IF;

          END P2;

     BEGIN

          NULL;

     END;

     RESULT;

END C74211B;