1-- C45531P.DEP
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-- OBJECTIVE:
26--     CHECK THAT THE OPERATOR "/" PRODUCES CORRECT RESULTS
27--     FOR MIXED FIXED POINT AND INTEGER TYPES USING 3 SUBTESTS.
28--       THIS TEST REQUIRES MIN_WORD_LENGTH = 48.
29--       THIS TEST USES VALUES OF DELTA WHICH ARE GREATER THAN OR
30--       EQUAL TO 0.5.
31--
32--     TEST CASES ARE:
33--       A) FIXED / INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
34--       B) FIXED / INTEGER WITH NUMERATOR MODEL NUMBER AND RESULT NOT.
35--       C) FIXED / INTEGER FOR NON-MODEL NUMBERS.
36--
37--     REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
38--     WITH RANGE <, =, AND > THAN 1.0 AND
39--     WITH DELTA <, =, AND > THAN 1.0.
40
41-- APPLICABILITY CRITERIA:
42--     THIS TEST IS APPLICABLE FOR IMPLEMENTATIONS WHICH HAVE A
43--     'MAX_MANTISSA OF 47 OR GREATER.
44
45--     IF 'MAX_MANTISSA >= 47 IS NOT SUPPORTED THEN THE DECLARATION OF
46--     'TYPE FX_OP5' MUST BE REJECTED.
47
48-- HISTORY:
49--     NTW 09/08/86 CREATED ORIGINAL TEST.
50--     RJW 11/05/86 REVISED COMMENTS.
51--     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
52--     BCB 04/27/90 REVISED APPLICABILITY CRITERIA.
53
54WITH REPORT;
55PROCEDURE C45531P IS
56
57     USE REPORT;
58
59     MIN_WORD_LENGTH : CONSTANT := 48;
60     FULL_SCALE      : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
61     FORTH           : CONSTANT := FULL_SCALE / 4;
62     RNG1            : CONSTANT := FULL_SCALE * 0.5;
63     TYPE FX_0P5  IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5;
64                                                        -- N/A => ERROR.
65     TYPE FX_1    IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0;
66     TYPE FX_RNG1 IS DELTA RNG1
67                    RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1);
68
69BEGIN TEST ("C45531P", "MIXED FIXED POINT AND INTEGER ""/"" "
70                     & "FOR DELTA <, =, > 1.0");
71
72     --------------------------------------------------
73
74     -- CASE A) FIXED / INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
75
76A:   DECLARE
77          A              : FX_0P5  := 0.0;
78          B              : INTEGER := 0;
79          RESULT_VALUE   : FX_0P5  := 0.0;
80          LOWEST_ACCEPTABLE_VALUE  : FX_0P5 := FX_0P5 (1.5);
81          HIGHEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (1.5);
82     BEGIN
83          IF EQUAL (3, 3) THEN
84               A := FX_0P5 (7.5);                 -- A MODEL NUMBER
85               B := 5;
86          END IF;
87
88          RESULT_VALUE := A / B;
89
90          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
91             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
92               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
93                    &  "FOR FIXED / INTEGER "
94                    &  "WHEN ALL VALUES ARE MODEL NUMBERS");
95          END IF;
96     END A;
97
98     --------------------------------------------------
99
100     -- CASE B) FIXED / INTEGER WITH NUMERATOR MODEL NUMBER, RESULT NOT
101
102B:   DECLARE
103          A              : FX_1    := 0.0;
104          B              : INTEGER := 0;
105          RESULT_VALUE   : FX_1    := 0.0;
106          LOWEST_ACCEPTABLE_VALUE  :  FX_1
107                                   := FX_1 (FORTH );
108          HIGHEST_ACCEPTABLE_VALUE :  FX_1
109                                   := FX_1 (FORTH + 1);
110     BEGIN
111          IF EQUAL (3, 3) THEN
112               A := FX_1 (3 * FORTH + 1);         -- A MODEL NUMBER
113               B := 3;
114          END IF;
115
116          RESULT_VALUE := A / B;
117
118          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
119             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
120               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
121                    &  "FOR FIXED / INTEGER WITH NUMERATOR MODEL "
122                    &  "NUMBER, RESULT NOT");
123
124          END IF;
125     END B;
126
127     --------------------------------------------------
128
129     -- CASE C) FIXED / INTEGER FOR NON-MODEL NUMBERS
130
131C:   DECLARE
132          A              : FX_RNG1 := 0.0;
133          B              : INTEGER := 0;
134          RESULT_VALUE   : FX_RNG1 := 0.0;
135          LOWEST_ACCEPTABLE_VALUE  :  FX_RNG1
136                                   := FX_RNG1 (RNG1 * FORTH );
137          HIGHEST_ACCEPTABLE_VALUE :  FX_RNG1
138                                   := FX_RNG1 (RNG1 * (FORTH + 1) );
139     BEGIN
140          IF EQUAL (3, 3) THEN                    -- A NOT MODEL NUMBER
141               A := FX_RNG1 (3 * (RNG1 * FORTH + 0.5) );
142               B := 3;
143          END IF;
144
145          RESULT_VALUE := A / B;
146
147          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
148             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
149               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
150                    &  "FOR FIXED / INTEGER FOR NON-MODEL NUMBERS");
151          END IF;
152     END C;
153
154     --------------------------------------------------
155
156
157     RESULT;
158
159END C45531P;
160