1-- C46024A.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 FLOATING POINT CONVERSIONS WHEN THE TARGET TYPE IS A
27--     FIXED POINT TYPE, FOR DIGITS 5.
28
29-- HISTORY:
30--     JET 02/19/88  CREATED ORIGINAL TEST.
31
32WITH REPORT; USE REPORT;
33
34PROCEDURE C46024A IS
35
36     TYPE FLOAT5 IS DIGITS 5;
37     TYPE FIX1 IS DELTA 2#0.01# RANGE -16#20.0# .. 16#20.0#;
38     TYPE FIX2 IS DELTA 2#0.0001# RANGE -16#80.0# .. 16#80.0#;
39     TYPE FIX3 IS DELTA 2#0.000001# RANGE -16#200.0# .. 16#200.0#;
40
41     F5, F5A, F5B : FLOAT5;
42
43     GENERIC
44          TYPE F IS DELTA <>;
45     FUNCTION IDENTG (A : F) RETURN F;
46
47     FUNCTION IDENTG (A : F) RETURN F IS
48     BEGIN
49          RETURN A + F(IDENT_INT(0));
50     END IDENTG;
51
52     FUNCTION IDENT1 IS NEW IDENTG(FIX1);
53     FUNCTION IDENT2 IS NEW IDENTG(FIX2);
54     FUNCTION IDENT3 IS NEW IDENTG(FIX3);
55
56BEGIN
57     TEST ("C46024A", "CHECK FLOATING POINT CONVERSIONS WHEN THE " &
58                      "TARGET TYPE IS A FIXED POINT TYPE, FOR " &
59                      "5-DIGIT PRECISION");
60
61     IF FIX1(FLOAT5'(2#0.1000_0000_0000_0000_00#E-1)) /=
62        IDENT1(2#0.01#) THEN
63          FAILED ("INCORRECT RESULT FROM CONVERSION (1)");
64     END IF;
65
66     IF FIX1(FLOAT5'(-2#0.1111_1110_0000_0000_00#E5)) /=
67        IDENT1(-2#1_1111.11#) THEN
68          FAILED ("INCORRECT RESULT FROM CONVERSION (2)");
69     END IF;
70
71     IF FIX1(FLOAT5'(-2#0.1010_0111_1111_1111_11#E4)) <
72        IDENT1(-2#1010.10#) OR
73        FIX1(FLOAT5'(-2#0.1010_0111_1111_1111_11#E4)) >
74        IDENT1(-2#1010.01#) THEN
75          FAILED ("INCORRECT RESULT FROM CONVERSION (3)");
76     END IF;
77
78     IF FIX2(FLOAT5'(-2#0.1000_0000_0000_0000_00#E-3)) /=
79        IDENT2(-2#0.0001#) THEN
80          FAILED ("INCORRECT RESULT FROM CONVERSION (4)");
81     END IF;
82
83     IF FIX2(FLOAT5'(2#0.1111_1111_1110_0000_00#E7)) /=
84        IDENT2(2#111_1111.1111#) THEN
85          FAILED ("INCORRECT RESULT FROM CONVERSION (5)");
86     END IF;
87
88     F5 := 2#0.1010_1010_1010_1010_10#E5;
89     IF FIX2(F5) < IDENT2(2#1_0101.0101#) OR
90        FIX2(F5) > IDENT2(2#1_0101.0110#) THEN
91          FAILED ("INCORRECT RESULT FROM CONVERSION (6)");
92     END IF;
93
94     IF FIX3(FLOAT5'(2#0.1000_0000_0000_0000_00#E-5)) /=
95        IDENT3(2#0.000001#) THEN
96          FAILED ("INCORRECT RESULT FROM CONVERSION (7)");
97     END IF;
98
99     IF FIX3(FLOAT5'(-2#0.1111_1111_1111_1110_00#E9)) /=
100        IDENT3(-2#1_1111_1111.1111_11#) THEN
101          FAILED ("INCORRECT RESULT FROM CONVERSION (8)");
102     END IF;
103
104     F5 := -2#0.1010_1010_1010_1010_10#E8;
105     IF FIX3(F5) < IDENT3(-2#1010_1010.1010_11#) OR
106        FIX3(F5) > IDENT3(-2#1010_1010.1010_10#) THEN
107          FAILED ("INCORRECT RESULT FROM CONVERSION (9)");
108     END IF;
109
110     F5A := 2#0.1010_1010_1010_1010_10#E4;
111     F5B := 2#0.1010_1010_1010_1010_10#E5;
112
113     IF FIX1(F5A) = IDENT1(2#1010.11#)   AND
114        FIX1(-F5A) = IDENT1(-2#1010.11#) AND
115        FIX1(F5B) = IDENT1(2#1_0101.01#) AND
116        FIX1(-F5B) = IDENT1(-2#1_0101.01#) THEN
117          COMMENT ("CONVERSION ROUNDS TO NEAREST");
118     ELSIF FIX1(F5A) = IDENT1(2#1010.10#) AND
119           FIX1(-F5B) = IDENT1(-2#1_0101.10#) THEN
120          COMMENT ("CONVERSION ROUNDS TO LEAST FIXED-POINT VALUE");
121     ELSIF FIX1(F5B) = IDENT1(2#1_0101.10#) AND
122           FIX1(-F5A) = IDENT1(-2#1010.10#) THEN
123          COMMENT ("CONVERSION ROUNDS TO GREATEST FIXED-POINT VALUE");
124     ELSIF FIX1(F5A) = IDENT1(2#1010.10#) AND
125           FIX1(-F5A) = IDENT1(-2#1010.10#) THEN
126          COMMENT ("CONVERSION ROUNDS TOWARD ZERO");
127     ELSIF FIX1(F5B) = IDENT1(2#1_0101.10#) AND
128           FIX1(-F5B) = IDENT1(-2#1_0101.10#) THEN
129          COMMENT ("CONVERSION ROUNDS AWAY FROM ZERO");
130     ELSE
131          COMMENT ("UNABLE TO DETERMINE CONVERSION PATTERN");
132     END IF;
133
134     RESULT;
135
136END C46024A;
137