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-- C64005B.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 A SUBPROGRAM CAN BE CALLED RECURSIVELY AND THAT NON-LOCAL
-- VARIABLES AND CONSTANTS ARE PROPERLY ACCESSED FROM WITHIN RECURSIVE
-- INVOCATIONS.
-- CPP 7/2/84
WITH REPORT; USE REPORT;
PROCEDURE C64005B IS
COUNT : INTEGER := 0;
TWENTY : CONSTANT INTEGER := 20;
C1 : CONSTANT INTEGER := 1;
G1, G2, G3 : INTEGER := 0;
G4, G5 : INTEGER := 0;
PROCEDURE R (A1 : INTEGER; A2 : IN OUT INTEGER; A3 : OUT INTEGER)
IS
C1 : CONSTANT INTEGER := 5;
TEN : CONSTANT INTEGER := 10;
J1, J2 : INTEGER := 1;
J3 : INTEGER := 0;
PROCEDURE RECURSE (P1 : INTEGER; P2 : IN OUT INTEGER) IS
C1 : INTEGER := 2;
BEGIN -- RECURSE
C1 := IDENT_INT (10);
IF P1 < TWENTY THEN
RECURSE (P1 + C1, G2);
G1 := G1 + C64005B.C1;
G3 := G3 + P1;
P2 := P2 + IDENT_INT(2);
A2 := A2 + IDENT_INT(1);
J2 := J2 + R.C1;
END IF;
END RECURSE;
BEGIN -- R
IF A2 < TEN THEN
A2 := A2 + C1;
RECURSE (0, J1);
J3 := J3 + TEN;
COUNT := COUNT + 1;
COMMENT ("ON PASS # " & INTEGER'IMAGE(COUNT));
COMMENT ("VALUE OF A2 IS " & INTEGER'IMAGE(A2));
COMMENT ("VALUE OF J3 IS " & INTEGER'IMAGE(J3));
R (0, A2, J3);
J3 := J3 + A2;
END IF;
A3 := J1 + J3;
END R;
BEGIN
TEST("C64005B", "RECURSIVE SUBPROGRAMS WITH ALL KINDS " &
"OF DATA ACCESS");
R (0, G4, G5);
IF (COUNT /= 2) OR (G1 /= 4) OR
(G2 /= 4) OR (G3 /= 20) OR
(G4 /= 14) OR (G5 /= 35) THEN
FAILED ("RECURSIVE INVOCATIONS' DATA ACCESS IS NOT" &
" WORKING CORRECTLY");
END IF;
COMMENT ("VALUE OF COUNT IS " & INTEGER'IMAGE(COUNT));
COMMENT ("VALUE OF G1 IS " & INTEGER'IMAGE(G1));
COMMENT ("VALUE OF G2 IS " & INTEGER'IMAGE(G2));
COMMENT ("VALUE OF G3 IS " & INTEGER'IMAGE(G3));
COMMENT ("VALUE OF G4 IS " & INTEGER'IMAGE(G4));
COMMENT ("VALUE OF G5 IS " & INTEGER'IMAGE(G5));
RESULT;
EXCEPTION
WHEN PROGRAM_ERROR =>
FAILED ("PROGRAM_ERROR RAISED");
COMMENT ("VALUE OF COUNT IS " & INTEGER'IMAGE(COUNT));
COMMENT ("VALUE OF G1 IS " & INTEGER'IMAGE(G1));
COMMENT ("VALUE OF G2 IS " & INTEGER'IMAGE(G2));
COMMENT ("VALUE OF G3 IS " & INTEGER'IMAGE(G3));
COMMENT ("VALUE OF G4 IS " & INTEGER'IMAGE(G4));
COMMENT ("VALUE OF G5 IS " & INTEGER'IMAGE(G5));
RESULT;
END C64005B;
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