1-- C45531B.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-- 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 = 12.
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-- HISTORY:
41--     NTW 09/08/86 CREATED ORIGINAL TEST.
42--     RJW 11/05/86 REVISED COMMENTS.
43--     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
44--     BCB 04/27/90 REVISED APPLICABILITY CRITERIA.
45--     BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR
46--                  LINE.  CHANGED EXTENSION FROM '.DEP' TO '.ADA'.
47
48WITH REPORT;
49PROCEDURE C45531B IS
50
51     USE REPORT;
52
53     MIN_WORD_LENGTH : CONSTANT := 12;
54     FULL_SCALE      : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
55     FORTH           : CONSTANT := FULL_SCALE / 4;
56     DEL1            : CONSTANT := 0.5 / FULL_SCALE;
57     DEL2            : CONSTANT := 2.0 * DEL1;
58     DEL4            : CONSTANT := 4.0 * DEL1;
59     TYPE FX_0P5 IS DELTA DEL1 * 1 RANGE -0.5 .. 0.5 - DEL1 * 1;
60     TYPE FX_1   IS DELTA DEL1 * 2 RANGE -1.0 .. 1.0 - DEL1 * 2;
61     TYPE FX_2   IS DELTA DEL1 * 4 RANGE -2.0 .. 2.0 - DEL1 * 4;
62
63BEGIN TEST ("C45531B", "MIXED FIXED POINT AND INTEGER ""/"" "
64                     & "FOR RANGE <, =, > 1.0");
65
66     --------------------------------------------------
67
68     -- CASE A) FIXED / INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
69
70A:   DECLARE
71          A              : FX_0P5  := 0.0;
72          B              : INTEGER := 0;
73          RESULT_VALUE   : FX_0P5  := 0.0;
74          LOWEST_ACCEPTABLE_VALUE  : FX_0P5 := FX_0P5 (3 * DEL1);
75          HIGHEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (3 * DEL1);
76     BEGIN
77          IF EQUAL (3, 3) THEN
78               A := FX_0P5 (15 * DEL1);           -- A MODEL NUMBER
79               B := 5;
80          END IF;
81
82          RESULT_VALUE := A / B;
83
84          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
85             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
86               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
87                    &  "FOR FIXED / INTEGER "
88                    &  "WHEN ALL VALUES ARE MODEL NUMBERS");
89          END IF;
90     END A;
91
92     --------------------------------------------------
93
94     -- CASE B) FIXED / INTEGER WITH NUMERATOR MODEL NUMBER, RESULT NOT
95
96B:   DECLARE
97          A              : FX_1    := 0.0;
98          B              : INTEGER := 0;
99          RESULT_VALUE   : FX_1    := 0.0;
100          LOWEST_ACCEPTABLE_VALUE  :  FX_1
101                                   := FX_1 (DEL2 * FORTH );
102          HIGHEST_ACCEPTABLE_VALUE :  FX_1
103                                   := FX_1 (DEL2 * (FORTH + 1) );
104     BEGIN
105          IF EQUAL (3, 3) THEN                    -- A IS A MODEL NUMBER
106               A := FX_1 (DEL2 * (3 * FORTH + 1) );
107               B := 3;
108          END IF;
109
110          RESULT_VALUE := A / B;
111
112          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
113             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
114               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
115                    &  "FOR FIXED / INTEGER WITH NUMERATOR MODEL "
116                    &  "NUMBER, RESULT NOT");
117
118          END IF;
119     END B;
120
121     --------------------------------------------------
122
123     -- CASE C) FIXED / INTEGER FOR NON-MODEL NUMBERS
124
125C:   DECLARE
126          A              : FX_2    := 0.0;
127          B              : INTEGER := 0;
128          RESULT_VALUE   : FX_2    := 0.0;
129          LOWEST_ACCEPTABLE_VALUE  :  FX_2
130                                   := FX_2 (DEL4 * FORTH );
131          HIGHEST_ACCEPTABLE_VALUE :  FX_2
132                                   := FX_2 (DEL4 * (FORTH + 1) );
133     BEGIN
134          IF EQUAL (3, 3) THEN                    -- A NOT MODEL NUMBER
135               A := FX_2 (3 * (DEL4 * FORTH + DEL1) );
136               B := 3;
137          END IF;
138
139          RESULT_VALUE := A / B;
140
141          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
142             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
143               FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
144                    &  "FOR FIXED / INTEGER FOR NON-MODEL NUMBERS");
145          END IF;
146     END C;
147
148     --------------------------------------------------
149
150
151     RESULT;
152
153END C45531B;
154