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476b894c AW |
1 | /* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003,2004, 2005, 2006, 2009 Free Software Foundation, Inc. |
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 | ||
84 | int | |
85 | scm_is_uniform_vector (SCM obj) | |
86 | { | |
87 | scm_t_array_handle h; | |
88 | int ret = 0; | |
89 | ||
90 | if (scm_is_generalized_vector (obj)) | |
91 | { | |
92 | scm_generalized_vector_get_handle (obj, &h); | |
93 | ret = SCM_ARRAY_ELEMENT_TYPE_IS_UNBOXED (h.element_type); | |
94 | scm_array_handle_release (&h); | |
95 | } | |
96 | return ret; | |
97 | } | |
98 | ||
99 | size_t | |
100 | scm_c_uniform_vector_length (SCM uvec) | |
101 | { | |
102 | scm_t_array_handle h; | |
103 | size_t len; | |
104 | ssize_t inc; | |
105 | ||
106 | scm_uniform_vector_elements (uvec, &h, &len, &inc); | |
107 | scm_array_handle_release (&h); | |
108 | return len; | |
109 | } | |
110 | ||
111 | SCM_DEFINE (scm_uniform_vector_p, "uniform-vector?", 1, 0, 0, | |
112 | (SCM obj), | |
113 | "Return @code{#t} if @var{obj} is a uniform vector.") | |
114 | #define FUNC_NAME s_scm_uniform_vector_p | |
115 | { | |
116 | return scm_from_bool (scm_is_uniform_vector (obj)); | |
117 | } | |
118 | #undef FUNC_NAME | |
119 | ||
120 | SCM_DEFINE (scm_uniform_vector_element_type, "uniform-vector-element-type", 1, 0, 0, | |
121 | (SCM v), | |
f5a51cae | 122 | "Return the type of the elements in the uniform vector, @var{v}.") |
476b894c AW |
123 | #define FUNC_NAME s_scm_uniform_vector_element_type |
124 | { | |
125 | scm_t_array_handle h; | |
476b894c | 126 | SCM ret; |
f5a51cae AW |
127 | |
128 | if (!scm_is_uniform_vector (v)) | |
129 | scm_wrong_type_arg_msg (FUNC_NAME, SCM_ARG1, v, "uniform vector"); | |
130 | scm_array_get_handle (v, &h); | |
476b894c AW |
131 | ret = scm_array_handle_element_type (&h); |
132 | scm_array_handle_release (&h); | |
133 | return ret; | |
134 | } | |
135 | #undef FUNC_NAME | |
136 | ||
137 | SCM_DEFINE (scm_uniform_vector_element_size, "uniform-vector-element-size", 1, 0, 0, | |
138 | (SCM v), | |
139 | "Return the number of bytes allocated to each element in the\n" | |
140 | "uniform vector, @var{v}.") | |
141 | #define FUNC_NAME s_scm_uniform_vector_element_size | |
142 | { | |
143 | scm_t_array_handle h; | |
144 | size_t len; | |
145 | ssize_t inc; | |
146 | SCM ret; | |
147 | scm_uniform_vector_elements (v, &h, &len, &inc); | |
148 | ret = scm_from_size_t (scm_array_handle_uniform_element_size (&h)); | |
149 | scm_array_handle_release (&h); | |
150 | return ret; | |
151 | } | |
152 | #undef FUNC_NAME | |
153 | ||
154 | SCM | |
155 | scm_c_uniform_vector_ref (SCM v, size_t idx) | |
156 | { | |
f5a51cae AW |
157 | if (!scm_is_uniform_vector (v)) |
158 | scm_wrong_type_arg_msg (NULL, 0, v, "uniform vector"); | |
159 | return scm_c_generalized_vector_ref (v, idx); | |
476b894c AW |
160 | } |
161 | ||
162 | SCM_DEFINE (scm_uniform_vector_ref, "uniform-vector-ref", 2, 0, 0, | |
163 | (SCM v, SCM idx), | |
164 | "Return the element at index @var{idx} of the\n" | |
165 | "homogenous numeric vector @var{v}.") | |
166 | #define FUNC_NAME s_scm_uniform_vector_ref | |
167 | { | |
168 | return scm_c_uniform_vector_ref (v, scm_to_size_t (idx)); | |
169 | } | |
170 | #undef FUNC_NAME | |
171 | ||
172 | void | |
173 | scm_c_uniform_vector_set_x (SCM v, size_t idx, SCM val) | |
174 | { | |
f5a51cae AW |
175 | if (!scm_is_uniform_vector (v)) |
176 | scm_wrong_type_arg_msg (NULL, 0, v, "uniform vector"); | |
177 | scm_c_generalized_vector_set_x (v, idx, val); | |
476b894c AW |
178 | } |
179 | ||
180 | SCM_DEFINE (scm_uniform_vector_set_x, "uniform-vector-set!", 3, 0, 0, | |
181 | (SCM v, SCM idx, SCM val), | |
182 | "Set the element at index @var{idx} of the\n" | |
183 | "homogenous numeric vector @var{v} to @var{val}.") | |
184 | #define FUNC_NAME s_scm_uniform_vector_set_x | |
185 | { | |
186 | scm_c_uniform_vector_set_x (v, scm_to_size_t (idx), val); | |
187 | return SCM_UNSPECIFIED; | |
188 | } | |
189 | #undef FUNC_NAME | |
190 | ||
191 | SCM_DEFINE (scm_uniform_vector_to_list, "uniform-vector->list", 1, 0, 0, | |
192 | (SCM uvec), | |
193 | "Convert the uniform numeric vector @var{uvec} to a list.") | |
194 | #define FUNC_NAME s_scm_uniform_vector_to_list | |
195 | { | |
f5a51cae AW |
196 | if (!scm_is_uniform_vector (uvec)) |
197 | scm_wrong_type_arg_msg (FUNC_NAME, SCM_ARG1, uvec, "uniform vector"); | |
198 | return scm_generalized_vector_to_list (uvec); | |
476b894c AW |
199 | } |
200 | #undef FUNC_NAME | |
201 | ||
202 | const void * | |
203 | scm_uniform_vector_elements (SCM uvec, | |
204 | scm_t_array_handle *h, | |
205 | size_t *lenp, ssize_t *incp) | |
206 | { | |
207 | return scm_uniform_vector_writable_elements (uvec, h, lenp, incp); | |
208 | } | |
209 | ||
210 | void * | |
211 | scm_uniform_vector_writable_elements (SCM uvec, | |
212 | scm_t_array_handle *h, | |
213 | size_t *lenp, ssize_t *incp) | |
214 | { | |
215 | void *ret; | |
216 | scm_generalized_vector_get_handle (uvec, h); | |
217 | /* FIXME nonlocal exit */ | |
218 | ret = scm_array_handle_uniform_writable_elements (h); | |
219 | if (lenp) | |
220 | { | |
221 | scm_t_array_dim *dim = scm_array_handle_dims (h); | |
222 | *lenp = dim->ubnd - dim->lbnd + 1; | |
223 | *incp = dim->inc; | |
224 | } | |
225 | return ret; | |
226 | } | |
227 | ||
228 | SCM_DEFINE (scm_uniform_vector_length, "uniform-vector-length", 1, 0, 0, | |
229 | (SCM v), | |
230 | "Return the number of elements in the uniform vector @var{v}.") | |
231 | #define FUNC_NAME s_scm_uniform_vector_length | |
232 | { | |
233 | return scm_from_size_t (scm_c_uniform_vector_length (v)); | |
234 | } | |
235 | #undef FUNC_NAME | |
236 | ||
237 | ||
238 | void | |
239 | scm_init_uniform (void) | |
240 | { | |
241 | #include "libguile/uniform.x" | |
242 | } | |
243 | ||
244 | /* | |
245 | Local Variables: | |
246 | c-file-style: "gnu" | |
247 | End: | |
248 | */ |