1-- C45531N.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 LESS THAN 0.5.
30--
31--     TEST CASES ARE:
32--       A) FIXED / INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
33--       B) FIXED / INTEGER WITH NUMERATOR MODEL NUMBER AND RESULT NOT.
34--       C) FIXED / INTEGER FOR NON-MODEL NUMBERS.
35--
36--     REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
37--     WITH RANGE <, =, AND > THAN 1.0 AND
38--     WITH DELTA <, =, AND > THAN 1.0.
39
40-- APPLICABILITY CRITERIA:
41--     THIS TEST IS APPLICABLE FOR IMPLEMENTATIONS WHICH HAVE A
42--     'MAX_MANTISSA OF 47 OR GREATER.
43
44--     IF 'MAX_MANTISSA >= 47 IS NOT SUPPORTED THEN THE DECLARATION OF
45--     'TYPE FX_OP5' MUST BE REJECTED.
46
47-- HISTORY:
48--     NTW 09/08/86 CREATED ORIGINAL TEST.
49--     RJW 11/05/86 REVISED COMMENTS.
50--     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
51--     BCB 04/27/90 REVISED APPLICABILITY CRITERIA.
52
53
54WITH REPORT;
55PROCEDURE C45531N 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     DEL1            : CONSTANT := 0.5 / FULL_SCALE;
63     DEL2            : CONSTANT := 2.0 * DEL1;
64     DEL4            : CONSTANT := 4.0 * DEL1;
65     TYPE FX_0P5 IS DELTA DEL1 * 1 RANGE -0.5 .. 0.5 - DEL1 * 1;
66                                                        -- N/A => ERROR.
67     TYPE FX_1   IS DELTA DEL1 * 2 RANGE -1.0 .. 1.0 - DEL1 * 2;
68     TYPE FX_2   IS DELTA DEL1 * 4 RANGE -2.0 .. 2.0 - DEL1 * 4;
69
70BEGIN TEST ("C45531N", "MIXED FIXED POINT AND INTEGER ""/"" "
71                     & "FOR RANGE <, =, > 1.0");
72
73     --------------------------------------------------
74
75     -- CASE A) FIXED / INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
76
77A:   DECLARE
78          A              : FX_0P5  := 0.0;
79          B              : INTEGER := 0;
80          RESULT_VALUE   : FX_0P5  := 0.0;
81          LOWEST_ACCEPTABLE_VALUE  : FX_0P5 := FX_0P5 (3 * DEL1);
82          HIGHEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (3 * DEL1);
83     BEGIN
84          IF EQUAL (3, 3) THEN
85               A := FX_0P5 (15 * DEL1);           -- A MODEL NUMBER
86               B := 5;
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 FIXED / INTEGER "
95                    &  "WHEN ALL VALUES ARE MODEL NUMBERS");
96          END IF;
97     END A;
98
99     --------------------------------------------------
100
101     -- CASE B) FIXED / INTEGER WITH NUMERATOR MODEL NUMBER, RESULT NOT
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
108                                   := FX_1 (DEL2 * FORTH );
109          HIGHEST_ACCEPTABLE_VALUE :  FX_1
110                                   := FX_1 (DEL2 * (FORTH + 1) );
111     BEGIN
112          IF EQUAL (3, 3) THEN                    -- A IS A MODEL NUMBER
113               A := FX_1 (DEL2 * (3 * FORTH + 1) );
114               B := 3;
115          END IF;
116
117          RESULT_VALUE := A / B;
118
119          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
120             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
121               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
122                    &  "FOR FIXED / INTEGER WITH NUMERATOR MODEL "
123                    &  "NUMBER, RESULT NOT");
124
125          END IF;
126     END B;
127
128     --------------------------------------------------
129
130     -- CASE C) FIXED / INTEGER FOR NON-MODEL NUMBERS
131
132C:   DECLARE
133          A              : FX_2    := 0.0;
134          B              : INTEGER := 0;
135          RESULT_VALUE   : FX_2    := 0.0;
136          LOWEST_ACCEPTABLE_VALUE  :  FX_2
137                                   := FX_2 (DEL4 * FORTH );
138          HIGHEST_ACCEPTABLE_VALUE :  FX_2
139                                   := FX_2 (DEL4 * (FORTH + 1) );
140     BEGIN
141          IF EQUAL (3, 3) THEN                    -- A NOT MODEL NUMBER
142               A := FX_2 (3 * (DEL4 * FORTH + DEL1) );
143               B := 3;
144          END IF;
145
146          RESULT_VALUE := A / B;
147
148          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
149             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
150               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
151                    &  "FOR FIXED / INTEGER FOR NON-MODEL NUMBERS");
152          END IF;
153     END C;
154
155     --------------------------------------------------
156
157
158     RESULT;
159
160END C45531N;
161