| -- CD4031A.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. |
| --* |
| -- OBJECTIVE: |
| -- CHECK THAT WHEN A RECORD REPRESENTATION CLAUSE IS GIVEN FOR A |
| -- VARIANT RECORD TYPE, THEN COMPONENTS BELONGING TO DIFFERENT |
| -- VARIANTS CAN BE GIVEN OVERLAPPING STORAGE. |
| |
| -- HISTORY: |
| -- PWB 07/22/87 CREATED ORIGINAL TEST. |
| -- DHH 03/27/89 CHANGED EXTENSION FROM '.DEP' TO '.ADA' AND |
| -- ADDED CHECK FOR REPRESENTATION CLAUSE. |
| -- RJW 06/12/90 REMOVED REFERENCES TO LENGTH_CHECK. REVISED |
| -- COMMENTS. |
| -- JRL 10/13/96 Adjusted ranges in type definitions to allow 1's |
| -- complement machines to represent all values in |
| -- the specified number of bits. |
| |
| WITH REPORT; USE REPORT; |
| PROCEDURE CD4031A IS |
| |
| TYPE DISCRIMINAN IS RANGE -1 .. 1; |
| TYPE INT IS RANGE -3 .. 3; |
| TYPE LARGE_INT IS RANGE -7 .. 7; |
| |
| TYPE TEST_CLAUSE (DISC : DISCRIMINAN := 0) IS |
| RECORD |
| CASE DISC IS |
| WHEN 0 => |
| INTEGER_COMP : LARGE_INT; |
| WHEN OTHERS => |
| CH_COMP_1 : INT; |
| CH_COMP_2 : INT; |
| END CASE; |
| END RECORD; |
| |
| FOR TEST_CLAUSE USE |
| RECORD |
| DISC AT 0 |
| RANGE 0 .. 1; |
| INTEGER_COMP AT 0 |
| RANGE 2 .. 5; |
| CH_COMP_1 AT 0 |
| RANGE 2 .. 4; |
| CH_COMP_2 AT 0 |
| RANGE 5 .. 7; |
| END RECORD; |
| |
| TYPE TEST_CL1 IS NEW TEST_CLAUSE(DISC => 0); |
| TYPE TEST_CL2 IS NEW TEST_CLAUSE(DISC => 1); |
| TEST_RECORD : TEST_CL1; |
| TEST_RECORD1 : TEST_CL2; |
| |
| INTEGER_COMP_FIRST, |
| CH_COMP_1_FIRST : INTEGER; |
| |
| BEGIN |
| TEST ("CD4031A", "IN RECORD REPRESENTATION CLAUSES " & |
| "FOR VARIANT RECORD TYPES, " & |
| "COMPONENTS OF DIFFERENT VARIANTS " & |
| "CAN BE GIVEN OVERLAPPING STORAGE"); |
| |
| TEST_RECORD := (0, -7); |
| INTEGER_COMP_FIRST := TEST_RECORD.INTEGER_COMP'FIRST_BIT; |
| |
| TEST_RECORD1 := (1, -3, -3); |
| CH_COMP_1_FIRST := TEST_RECORD1.CH_COMP_1'FIRST_BIT; |
| |
| IF INTEGER_COMP_FIRST /= CH_COMP_1_FIRST THEN |
| FAILED ("COMPONENTS DO NOT BEGIN AT SAME POINT"); |
| END IF; |
| |
| RESULT; |
| END CD4031A; |