1 | /* |
2 | * Copyright © 2012 Intel Corporation |
3 | * |
4 | * Permission is hereby granted, free of charge, to any person obtaining |
5 | * a copy of this software and associated documentation files (the |
6 | * "Software"), to deal in the Software without restriction, including |
7 | * without limitation the rights to use, copy, modify, merge, publish, |
8 | * distribute, sublicense, and/or sell copies of the Software, and to |
9 | * permit persons to whom the Software is furnished to do so, subject to |
10 | * the following conditions: |
11 | * |
12 | * The above copyright notice and this permission notice (including the |
13 | * next paragraph) shall be included in all copies or substantial |
14 | * portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
17 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
19 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
20 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
21 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
23 | * SOFTWARE. |
24 | */ |
25 | |
26 | #include <stdlib.h> |
27 | #include <stdio.h> |
28 | #include <assert.h> |
29 | #include "wayland-private.h" |
30 | #include "test-runner.h" |
31 | |
32 | TEST(fixed_double_conversions) |
33 | { |
34 | wl_fixed_t f; |
35 | double d; |
36 | |
37 | d = 62.125; |
38 | f = wl_fixed_from_double(d); |
39 | fprintf(stderr, format: "double %lf to fixed %x\n" , d, f); |
40 | assert(f == 0x3e20); |
41 | |
42 | d = -1200.625; |
43 | f = wl_fixed_from_double(d); |
44 | fprintf(stderr, format: "double %lf to fixed %x\n" , d, f); |
45 | assert(f == -0x4b0a0); |
46 | |
47 | f = random(); |
48 | d = wl_fixed_to_double(f); |
49 | fprintf(stderr, format: "fixed %x to double %lf\n" , f, d); |
50 | assert(d == f / 256.0); |
51 | |
52 | f = 0x012030; |
53 | d = wl_fixed_to_double(f); |
54 | fprintf(stderr, format: "fixed %x to double %lf\n" , f, d); |
55 | assert(d == 288.1875); |
56 | |
57 | f = 0x70000000; |
58 | d = wl_fixed_to_double(f); |
59 | fprintf(stderr, format: "fixed %x to double %lf\n" , f, d); |
60 | assert(d == f / 256); |
61 | |
62 | f = -0x012030; |
63 | d = wl_fixed_to_double(f); |
64 | fprintf(stderr, format: "fixed %x to double %lf\n" , f, d); |
65 | assert(d == -288.1875); |
66 | |
67 | f = 0x80000000; |
68 | d = wl_fixed_to_double(f); |
69 | fprintf(stderr, format: "fixed %x to double %lf\n" , f, d); |
70 | assert(d == f / 256); |
71 | } |
72 | |
73 | TEST(fixed_int_conversions) |
74 | { |
75 | wl_fixed_t f; |
76 | int i; |
77 | |
78 | i = 62; |
79 | f = wl_fixed_from_int(i); |
80 | assert(f == 62 * 256); |
81 | |
82 | i = -2080; |
83 | f = wl_fixed_from_int(i); |
84 | assert(f == -2080 * 256); |
85 | |
86 | f = 0x277013; |
87 | i = wl_fixed_to_int(f); |
88 | assert(i == 0x2770); |
89 | |
90 | f = -0x5044; |
91 | i = wl_fixed_to_int(f); |
92 | assert(i == -0x50); |
93 | } |
94 | |