1-- C45531O.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 4 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) INTEGER * FIXED WHEN ALL VALUES ARE MODEL NUMBERS.
34--       B) FIXED * INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
35--       C) INTEGER * FIXED FOR NON-MODEL NUMBERS.
36--       D) FIXED * INTEGER FOR NON-MODEL NUMBERS.
37--
38--     REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
39--     WITH RANGE <, =, AND > THAN 1.0 AND
40--     WITH DELTA <, =, AND > THAN 1.0.
41
42-- APPLICABILITY CRITERIA:
43--     THIS TEST IS APPLICABLE FOR IMPLEMENTATIONS WHICH HAVE A
44--     'MAX_MANTISSA OF 47 OR GREATER.
45
46--     IF 'MAX_MANTISSA >= 47 IS NOT SUPPORTED THEN THE DECLARATION OF
47--     'TYPE FX_OP5' MUST BE REJECTED.
48
49-- HISTORY:
50--     NTW 09/08/86 CREATED ORIGINAL TEST.
51--     RJW 11/05/86 REVISED COMMENTS.
52--     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
53--     BCB 04/27/90 REVISED APPLICABILITY CRITERIA.
54
55WITH REPORT;
56PROCEDURE C45531O IS
57
58     USE REPORT;
59
60     MIN_WORD_LENGTH : CONSTANT := 48;
61     FULL_SCALE      : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
62     FORTH           : CONSTANT := FULL_SCALE / 4;
63     RNG1            : CONSTANT := FULL_SCALE * 0.5;
64     TYPE FX_0P5  IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5;
65                                                        -- N/A => ERROR.
66     TYPE FX_1    IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0;
67     TYPE FX_RNG1 IS DELTA RNG1
68                    RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1);
69
70BEGIN TEST ("C45531O", "MIXED FIXED POINT AND INTEGER ""*"" "
71                    &  "FOR DELTA <, =, > 1.0");
72
73     --------------------------------------------------
74
75     -- CASE A) INTEGER * FIXED WHEN ALL VALUES ARE MODEL NUMBERS.
76
77A:   DECLARE
78          A              : INTEGER := 0;
79          B              : FX_0P5  := 0.0;
80          RESULT_VALUE   : FX_0P5  := 0.0;
81          LOWEST_ACCEPTABLE_VALUE  : FX_0P5 := FX_0P5 (7.5);
82          HIGHEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (7.5);
83     BEGIN
84          IF EQUAL (3, 3) THEN
85               A := 3;
86               B := FX_0P5 (2.5);               -- A MODEL NUMBER
87          END IF;
88
89          RESULT_VALUE := A * B;
90
91          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
92             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
93               FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
94                    &  "FOR INTEGER * FIXED "
95                    &  "WHEN ALL VALUES ARE MODEL NUMBERS");
96          END IF;
97     END A;
98
99     --------------------------------------------------
100
101     -- CASE B) FIXED * INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
102
103B:   DECLARE
104          A              : FX_1    := 0.0;
105          B              : INTEGER := 0;
106          RESULT_VALUE   : FX_1    := 0.0;
107          LOWEST_ACCEPTABLE_VALUE  : FX_1 := FX_1 (3 * FORTH);
108          HIGHEST_ACCEPTABLE_VALUE : FX_1 := FX_1 (3 * FORTH);
109     BEGIN
110          IF EQUAL (3, 3) THEN
111               A := FX_1 (FULL_SCALE / 8);        -- A MODEL NUMBER
112               B := 6;
113          END IF;
114
115          RESULT_VALUE := A * B;
116
117          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
118             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
119               FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
120                    &  "FOR FIXED * INTEGER "
121                    &  "WHEN ALL VALUES ARE MODEL NUMBERS");
122          END IF;
123     END B;
124
125     --------------------------------------------------
126
127     -- CASE C) INTEGER * FIXED FOR NON-MODEL NUMBERS.
128
129C:   DECLARE
130          A              : INTEGER := 0;
131          B              : FX_RNG1 := 0.0;
132          RESULT_VALUE   : FX_RNG1 := 0.0;
133          LOW_COUNT     : CONSTANT := (3 * (FORTH + 0) );
134          HIGH_COUNT    : CONSTANT := (3 * (FORTH + 1) );
135          LOWEST_ACCEPTABLE_VALUE  :  FX_RNG1
136                                   := FX_RNG1 (RNG1 * LOW_COUNT );
137          HIGHEST_ACCEPTABLE_VALUE :  FX_RNG1
138                                   := FX_RNG1 (RNG1 * HIGH_COUNT);
139     BEGIN
140          IF EQUAL (3, 3) THEN        -- B NOT A MODEL NUMBER
141               A := 3;
142               B := FX_RNG1 (RNG1 * FORTH + 0.5);
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 INTEGER * FIXED FOR NON-MODEL NUMBERS");
151
152          END IF;
153     END C;
154
155     --------------------------------------------------
156
157     -- CASE D) FIXED * INTEGER FOR NON-MODEL NUMBERS.
158
159D:   DECLARE
160          A              : FX_RNG1 := 0.0;
161          B              : INTEGER := 0;
162          RESULT_VALUE   : FX_RNG1 := 0.0;
163          LOW_COUNT     : CONSTANT := (3 * (FORTH + 0) );
164          HIGH_COUNT    : CONSTANT := (3 * (FORTH + 1) );
165          LOWEST_ACCEPTABLE_VALUE  :  FX_RNG1
166                                   := FX_RNG1 (RNG1 * LOW_COUNT );
167          HIGHEST_ACCEPTABLE_VALUE :  FX_RNG1
168                                   := FX_RNG1 (RNG1 * HIGH_COUNT);
169     BEGIN
170          IF EQUAL (3, 3) THEN        -- A NOT A MODEL NUMBER
171               A := FX_RNG1 (RNG1 * FORTH + 0.5);
172               B := 3;
173          END IF;
174
175          RESULT_VALUE := A * B;
176
177          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
178             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
179               FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
180                    &  "FOR FIXED * INTEGER FOR NON-MODEL NUMBERS");
181          END IF;
182     END D;
183
184     --------------------------------------------------
185
186
187     RESULT;
188
189END C45531O;
190