1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
-- C35A05D.ADA
-- Grant of Unlimited Rights
--
-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
-- unlimited rights in the software and documentation contained herein.
-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
-- this public release, the Government intends to confer upon all
-- recipients unlimited rights equal to those held by the Government.
-- These rights include rights to use, duplicate, release or disclose the
-- released technical data and computer software in whole or in part, in
-- any manner and for any purpose whatsoever, and to have or permit others
-- to do so.
--
-- DISCLAIMER
--
-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
-- PARTICULAR PURPOSE OF SAID MATERIAL.
--*
-- CHECK THAT FOR FIXED POINT TYPES THE FORE AND AFT ATTRIBUTES YIELD
-- THE CORRECT VALUES.
-- CASE D: TYPES TYPICAL OF APPLICATIONS USING FIXED POINT ARITHMETIC.
-- WRG 8/14/86
WITH REPORT; USE REPORT;
PROCEDURE C35A05D IS
PI : CONSTANT := 3.14159_26535_89793_23846;
TWO_PI : CONSTANT := 2 * PI;
HALF_PI : CONSTANT := PI / 2;
MM : CONSTANT := 23;
-- THE NAME OF EACH TYPE OR SUBTYPE ENDS WITH THAT TYPE'S
-- 'MANTISSA VALUE.
TYPE MICRO_ANGLE_ERROR_M15 IS
DELTA 16.0 RANGE -(2.0 ** 19) .. 2.0 ** 19;
TYPE TRACK_RANGE_M15 IS
DELTA 0.125 RANGE -(2.0 ** 12) .. 2.0 ** 12;
TYPE SECONDS_MM IS
DELTA 2.0 ** (8 - MM) RANGE -(2.0 ** 8) .. 2.0 ** 8;
TYPE RANGE_CELL_MM IS
DELTA 2.0 ** (-5)
RANGE -(2.0 ** (MM - 5) ) .. 2.0 ** (MM - 5);
TYPE PIXEL_M10 IS DELTA 1.0 / 1024.0 RANGE 0.0 .. 1.0;
TYPE RULER_M8 IS DELTA 1.0 / 16.0 RANGE 0.0 .. 12.0;
TYPE HOURS_M16 IS DELTA 24.0 * 2.0 ** (-15) RANGE 0.0 .. 24.0;
TYPE MILES_M16 IS DELTA 3000.0 * 2.0 ** (-15) RANGE 0.0 .. 3000.0;
TYPE SYMMETRIC_DEGREES_M7 IS
DELTA 2.0 RANGE -180.0 .. 180.0;
TYPE NATURAL_DEGREES_M15 IS
DELTA 2.0 ** (-6) RANGE 0.0 .. 360.0;
TYPE SYMMETRIC_RADIANS_M16 IS
DELTA PI * 2.0 ** (-15) RANGE -PI .. PI;
TYPE NATURAL_RADIANS_M8 IS
DELTA TWO_PI * 2.0 ** ( -7) RANGE 0.0 .. TWO_PI;
-------------------------------------------------------------------
SUBTYPE ST_MILES_M8 IS MILES_M16
DELTA 3000.0 * 2.0 ** (-15) RANGE 0.0 .. 10.0;
SUBTYPE ST_NATURAL_DEGREES_M11 IS NATURAL_DEGREES_M15
DELTA 0.25 RANGE 0.0 .. 360.0;
SUBTYPE ST_SYMMETRIC_RADIANS_M8 IS SYMMETRIC_RADIANS_M16
DELTA HALF_PI * 2.0 ** (-7) RANGE -HALF_PI .. HALF_PI;
-------------------------------------------------------------------
PROCEDURE CHECK_FORE_AND_AFT
(NAME : STRING;
ACTUAL_FORE : INTEGER; CORRECT_FORE : POSITIVE;
ACTUAL_AFT : INTEGER; CORRECT_AFT : POSITIVE) IS
BEGIN
IF ACTUAL_FORE /= IDENT_INT (CORRECT_FORE) THEN
FAILED (NAME & "'FORE =" & INTEGER'IMAGE(ACTUAL_FORE) );
END IF;
IF ACTUAL_AFT /= IDENT_INT (CORRECT_AFT) THEN
FAILED (NAME & "'AFT =" & INTEGER'IMAGE(ACTUAL_AFT) );
END IF;
END CHECK_FORE_AND_AFT;
BEGIN
TEST ("C35A05D", "CHECK THAT FOR FIXED POINT TYPES THE FORE AND " &
"AFT ATTRIBUTES YIELD THE CORRECT VALUES - " &
"TYPICAL TYPES");
CHECK_FORE_AND_AFT ("MICRO_ANGLE_ERROR_M15",
MICRO_ANGLE_ERROR_M15'FORE, 7,
MICRO_ANGLE_ERROR_M15'AFT, 1);
CHECK_FORE_AND_AFT ("TRACK_RANGE_M15", TRACK_RANGE_M15'FORE, 5,
TRACK_RANGE_M15'AFT, 1);
CHECK_FORE_AND_AFT ("SECONDS_MM", SECONDS_MM'FORE, 4,
SECONDS_MM'AFT, 5);
CHECK_FORE_AND_AFT ("RANGE_CELL_MM", RANGE_CELL_MM'FORE, 7,
RANGE_CELL_MM'AFT, 2);
CHECK_FORE_AND_AFT ("PIXEL_M10", PIXEL_M10'FORE, 2,
PIXEL_M10'AFT, 4);
CHECK_FORE_AND_AFT ("RULER_M8", RULER_M8'FORE, 3,
RULER_M8'AFT, 2);
CHECK_FORE_AND_AFT ("HOURS_M16", HOURS_M16'FORE, 3,
HOURS_M16'AFT, 4);
CHECK_FORE_AND_AFT ("MILES_M16", MILES_M16'FORE, 5,
MILES_M16'AFT, 2);
CHECK_FORE_AND_AFT ("SYMMETRIC_DEGREES_M7",
SYMMETRIC_DEGREES_M7'FORE, 4,
SYMMETRIC_DEGREES_M7'AFT, 1);
CHECK_FORE_AND_AFT ("NATURAL_DEGREES_M15",
NATURAL_DEGREES_M15'FORE, 4,
NATURAL_DEGREES_M15'AFT, 2);
CHECK_FORE_AND_AFT ("SYMMETRIC_RADIANS_M16",
SYMMETRIC_RADIANS_M16'FORE, 2,
SYMMETRIC_RADIANS_M16'AFT, 5);
CHECK_FORE_AND_AFT ("NATURAL_RADIANS_M8",
NATURAL_RADIANS_M8'FORE, 2,
NATURAL_RADIANS_M8'AFT, 2);
CHECK_FORE_AND_AFT ("ST_MILES_M8", ST_MILES_M8'FORE, 3,
ST_MILES_M8'AFT, 2);
CHECK_FORE_AND_AFT ("ST_NATURAL_DEGREES_M11",
ST_NATURAL_DEGREES_M11'FORE, 4,
ST_NATURAL_DEGREES_M11'AFT, 1);
CHECK_FORE_AND_AFT ("ST_SYMMETRIC_RADIANS_M8",
ST_SYMMETRIC_RADIANS_M8'FORE, 2,
ST_SYMMETRIC_RADIANS_M8'AFT, 2);
RESULT;
END C35A05D;
|
