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1 | -- Copyright 2004-2025 Free Software Foundation, Inc. | |
2 | -- | |
3 | -- This program is free software; you can redistribute it and/or modify | |
4 | -- it under the terms of the GNU General Public License as published by | |
5 | -- the Free Software Foundation; either version 3 of the License, or | |
6 | -- (at your option) any later version. | |
7 | -- | |
8 | -- This program is distributed in the hope that it will be useful, | |
9 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | -- GNU General Public License for more details. | |
12 | -- | |
13 | -- You should have received a copy of the GNU General Public License | |
14 | -- along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | ||
16 | with System; | |
17 | with Pck; use Pck; | |
18 | ||
19 | procedure Fixed_Points is | |
20 | ||
21 | ------------ | |
22 | -- Test 1 -- | |
23 | ------------ | |
24 | ||
25 | -- Fixed point subtypes | |
26 | ||
27 | type Base_Fixed_Point_Type is | |
28 | delta 1.0 / 16.0 | |
29 | range -2147483648 * 1.0 / 16.0 .. 2147483647 * 1.0 / 16.0; | |
30 | ||
31 | subtype Fixed_Point_Subtype is | |
32 | Base_Fixed_Point_Type range -50.0 .. 50.0; | |
33 | ||
34 | type New_Fixed_Point_Type is | |
35 | new Base_Fixed_Point_Type range -50.0 .. 50.0; | |
36 | ||
37 | Base_Object : Base_Fixed_Point_Type := -50.0; | |
38 | Subtype_Object : Fixed_Point_Subtype := -50.0; | |
39 | New_Type_Object : New_Fixed_Point_Type := -50.0; | |
40 | ||
41 | ||
42 | ------------ | |
43 | -- Test 2 -- | |
44 | ------------ | |
45 | ||
46 | -- Overprecise delta | |
47 | ||
48 | Overprecise_Delta : constant := 0.135791357913579; | |
49 | -- delta whose significant figures cannot be stored into a long. | |
50 | ||
51 | type Overprecise_Fixed_Point is | |
52 | delta Overprecise_Delta range 0.0 .. 200.0; | |
53 | for Overprecise_Fixed_Point'Small use Overprecise_Delta; | |
54 | ||
55 | Overprecise_Object : Overprecise_Fixed_Point := | |
56 | Overprecise_Fixed_Point'Small; | |
57 | ||
58 | FP5_Var : FP5_Type := 3 * Delta5; | |
59 | ||
60 | ||
61 | Another_Delta : constant := 1.0/(2**63); | |
62 | type Another_Type is delta Another_Delta range -1.0 .. (1.0 - Another_Delta); | |
63 | for Another_Type'small use Another_Delta; | |
64 | for Another_Type'size use 64; | |
65 | Another_Fixed : Another_Type := Another_Delta * 5; | |
66 | ||
67 | Semicircle_Delta : constant := 1.0/(2**31); | |
68 | type Semicircle_Type is delta Semicircle_Delta range -1.0 .. (1.0 - Semicircle_Delta); | |
69 | for Semicircle_Type'small use Semicircle_Delta; | |
70 | for Semicircle_Type'size use 32; | |
71 | Object_Fixed : Semicircle_Type := Semicircle_Delta * 5; | |
72 | ||
73 | begin | |
74 | Base_Object := 1.0/16.0; -- Set breakpoint here | |
75 | Subtype_Object := 1.0/16.0; | |
76 | New_Type_Object := 1.0/16.0; | |
77 | Overprecise_Object := Overprecise_Fixed_Point'Small * 2; | |
78 | Do_Nothing (FP1_Var'Address); | |
79 | Do_Nothing (FP2_Var'Address); | |
80 | Do_Nothing (FP3_Var'Address); | |
81 | Do_Nothing (FP4_Var'Address); | |
82 | Do_Nothing (FP5_Var'Address); | |
83 | Do_Nothing (Another_Fixed'Address); | |
84 | Do_Nothing (Object_Fixed'Address); | |
85 | end Fixed_Points; |