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c4aca3b9 | 1 | /* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003,2004, 2005, 2006, 2009, 2010, 2013, 2014 Free Software Foundation, Inc. |
476b894c AW |
2 | * |
3 | * This library is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU Lesser General Public License | |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public | |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
16 | * 02110-1301 USA | |
17 | */ | |
18 | ||
19 | ||
20 | \f | |
21 | ||
22 | #ifdef HAVE_CONFIG_H | |
23 | # include <config.h> | |
24 | #endif | |
25 | ||
476b894c AW |
26 | #include "libguile/_scm.h" |
27 | #include "libguile/__scm.h" | |
28 | ||
29 | #include "libguile/uniform.h" | |
30 | ||
31 | ||
32 | const size_t scm_i_array_element_type_sizes[SCM_ARRAY_ELEMENT_TYPE_LAST + 1] = { | |
33 | 0, | |
34 | 0, | |
35 | 1, | |
36 | 8, | |
37 | 8, 8, | |
38 | 16, 16, | |
39 | 32, 32, | |
40 | 64, 64, | |
41 | 32, 64, | |
42 | 64, 128 | |
43 | }; | |
44 | ||
476b894c AW |
45 | size_t |
46 | scm_array_handle_uniform_element_size (scm_t_array_handle *h) | |
47 | { | |
48 | size_t ret = scm_i_array_element_type_sizes[h->element_type]; | |
49 | if (ret && ret % 8 == 0) | |
50 | return ret / 8; | |
f5a51cae AW |
51 | else if (ret) |
52 | scm_wrong_type_arg_msg (NULL, 0, h->array, "byte-aligned uniform array"); | |
53 | else | |
54 | scm_wrong_type_arg_msg (NULL, 0, h->array, "uniform array"); | |
55 | } | |
56 | ||
57 | size_t | |
58 | scm_array_handle_uniform_element_bit_size (scm_t_array_handle *h) | |
59 | { | |
60 | size_t ret = scm_i_array_element_type_sizes[h->element_type]; | |
61 | if (ret) | |
62 | return ret; | |
476b894c AW |
63 | else |
64 | scm_wrong_type_arg_msg (NULL, 0, h->array, "uniform array"); | |
65 | } | |
66 | ||
67 | const void * | |
68 | scm_array_handle_uniform_elements (scm_t_array_handle *h) | |
69 | { | |
70 | return scm_array_handle_uniform_writable_elements (h); | |
71 | } | |
72 | ||
73 | void * | |
74 | scm_array_handle_uniform_writable_elements (scm_t_array_handle *h) | |
75 | { | |
76 | size_t esize; | |
77 | scm_t_uint8 *ret; | |
78 | ||
79 | esize = scm_array_handle_uniform_element_size (h); | |
80 | ret = ((scm_t_uint8*) h->writable_elements) + h->base * esize; | |
81 | return ret; | |
82 | } | |
83 | ||
476b894c AW |
84 | void |
85 | scm_init_uniform (void) | |
86 | { | |
87 | #include "libguile/uniform.x" | |
88 | } | |
89 | ||
90 | /* | |
91 | Local Variables: | |
92 | c-file-style: "gnu" | |
93 | End: | |
94 | */ |