1-- C58004C.ADA
2
3--                             Grant of Unlimited Rights
4--
5--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
6--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
7--     unlimited rights in the software and documentation contained herein.
8--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
9--     this public release, the Government intends to confer upon all
10--     recipients unlimited rights  equal to those held by the Government.
11--     These rights include rights to use, duplicate, release or disclose the
12--     released technical data and computer software in whole or in part, in
13--     any manner and for any purpose whatsoever, and to have or permit others
14--     to do so.
15--
16--                                    DISCLAIMER
17--
18--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
19--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
20--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
21--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
22--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
23--     PARTICULAR PURPOSE OF SAID MATERIAL.
24--*
25-- CHECK THAT THE RETURN STATEMENT WORKS FOR RECURSIVE SUBPROGRAMS,
26--    BOTH FUNCTIONS AND PROCEDURES.
27
28-- DCB 2/8/80
29-- SPS 3/7/83
30-- JBG 5/17/83
31
32WITH REPORT;
33PROCEDURE C58004C IS
34
35     USE REPORT;
36
37     I1, I2 : INTEGER := 0;   -- INITIAL VALUE IS IMMATERIAL
38
39     PROCEDURE FACTORIALP (IP1 : IN INTEGER; IP2 : IN OUT INTEGER) IS
40
41     BEGIN
42          IF IP1 = 1 THEN
43               IP2 := 1;
44               RETURN;
45          ELSE FACTORIALP (IP1 - 1, IP2);
46               IP2 := IP1 * IP2;
47               RETURN;
48          END IF;
49
50          IP2 := 0;
51
52     END FACTORIALP;
53
54     FUNCTION FACTORIALF (IF1 : INTEGER) RETURN INTEGER IS
55
56     BEGIN
57          IF IF1 = 1 THEN RETURN (1);
58          END IF;
59
60          RETURN (IF1 * FACTORIALF(IF1 - 1) );
61
62     END FACTORIALF;
63
64BEGIN
65     TEST ("C58004C", "CHECK THAT THE RETURN STATEMENT WORKS FOR" &
66           " RECURSIVE FUNCTIONS AND PROCEDURES");
67
68     I1 := FACTORIALF (5);
69
70     IF I1 /= 120 THEN
71           FAILED ("RETURN STATEMENT IN RECURSIVE FUNCTION NOT " &
72                   "WORKING");
73     END IF;
74
75     FACTORIALP (5, I2);
76
77     IF I2 = 0 THEN
78          FAILED ("RETURN STATEMENT IN RECURSIVE PROCEDURE NOT " &
79                  "WORKING");
80     ELSIF I2 /= 120 THEN
81          FAILED
82          ("RETURN STMT IN RECURSIVE PROCEDURE NOT WORKING CORRECTLY");
83     END IF;
84
85     RESULT;
86END C58004C;
87