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1 | /* Implementation of the SUM intrinsic |
2 | Copyright 2002 Free Software Foundation, Inc. | |
3 | Contributed by Paul Brook <paul@nowt.org> | |
4 | ||
5 | This file is part of the GNU Fortran 95 runtime library (libgfor). | |
6 | ||
7 | Libgfortran is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU Lesser General Public | |
9 | License as published by the Free Software Foundation; either | |
10 | version 2.1 of the License, or (at your option) any later version. | |
11 | ||
12 | Libgfortran is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public | |
18 | License along with libgfor; see the file COPYING.LIB. If not, | |
19 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "config.h" | |
23 | #include <stdlib.h> | |
24 | #include <assert.h> | |
25 | #include "libgfortran.h" | |
26 | ||
27 | ||
28 | void | |
29 | __sum_i8 (gfc_array_i8 * retarray, gfc_array_i8 *array, index_type *pdim) | |
30 | { | |
31 | index_type count[GFC_MAX_DIMENSIONS - 1]; | |
32 | index_type extent[GFC_MAX_DIMENSIONS - 1]; | |
33 | index_type sstride[GFC_MAX_DIMENSIONS - 1]; | |
34 | index_type dstride[GFC_MAX_DIMENSIONS - 1]; | |
35 | GFC_INTEGER_8 *base; | |
36 | GFC_INTEGER_8 *dest; | |
37 | index_type rank; | |
38 | index_type n; | |
39 | index_type len; | |
40 | index_type delta; | |
41 | index_type dim; | |
42 | ||
43 | /* Make dim zero based to avoid confusion. */ | |
44 | dim = (*pdim) - 1; | |
45 | rank = GFC_DESCRIPTOR_RANK (array) - 1; | |
46 | assert (rank == GFC_DESCRIPTOR_RANK (retarray)); | |
47 | if (array->dim[0].stride == 0) | |
48 | array->dim[0].stride = 1; | |
49 | if (retarray->dim[0].stride == 0) | |
50 | retarray->dim[0].stride = 1; | |
51 | ||
52 | len = array->dim[dim].ubound + 1 - array->dim[dim].lbound; | |
53 | delta = array->dim[dim].stride; | |
54 | ||
55 | for (n = 0; n < dim; n++) | |
56 | { | |
57 | sstride[n] = array->dim[n].stride; | |
58 | extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound; | |
59 | } | |
60 | for (n = dim; n < rank; n++) | |
61 | { | |
62 | sstride[n] = array->dim[n + 1].stride; | |
63 | extent[n] = | |
64 | array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound; | |
65 | } | |
66 | ||
67 | for (n = 0; n < rank; n++) | |
68 | { | |
69 | count[n] = 0; | |
70 | dstride[n] = retarray->dim[n].stride; | |
71 | if (extent[n] <= 0) | |
72 | len = 0; | |
73 | } | |
74 | ||
75 | base = array->data; | |
76 | dest = retarray->data; | |
77 | ||
78 | while (base) | |
79 | { | |
80 | GFC_INTEGER_8 *src; | |
81 | GFC_INTEGER_8 result; | |
82 | src = base; | |
83 | { | |
84 | ||
85 | result = 0; | |
86 | if (len <= 0) | |
87 | *dest = 0; | |
88 | else | |
89 | { | |
90 | for (n = 0; n < len; n++, src += delta) | |
91 | { | |
92 | ||
93 | result += *src; | |
94 | } | |
95 | *dest = result; | |
96 | } | |
97 | } | |
98 | /* Advance to the next element. */ | |
99 | count[0]++; | |
100 | base += sstride[0]; | |
101 | dest += dstride[0]; | |
102 | n = 0; | |
103 | while (count[n] == extent[n]) | |
104 | { | |
105 | /* When we get to the end of a dimension, reset it and increment | |
106 | the next dimension. */ | |
107 | count[n] = 0; | |
108 | /* We could precalculate these products, but this is a less | |
109 | frequently used path so proabably not worth it. */ | |
110 | base -= sstride[n] * extent[n]; | |
111 | dest -= dstride[n] * extent[n]; | |
112 | n++; | |
113 | if (n == rank) | |
114 | { | |
115 | /* Break out of the look. */ | |
116 | base = NULL; | |
117 | break; | |
118 | } | |
119 | else | |
120 | { | |
121 | count[n]++; | |
122 | base += sstride[n]; | |
123 | dest += dstride[n]; | |
124 | } | |
125 | } | |
126 | } | |
127 | } | |
128 | ||
129 | void | |
130 | __msum_i8 (gfc_array_i8 * retarray, gfc_array_i8 * array, index_type *pdim, gfc_array_l4 * mask) | |
131 | { | |
132 | index_type count[GFC_MAX_DIMENSIONS - 1]; | |
133 | index_type extent[GFC_MAX_DIMENSIONS - 1]; | |
134 | index_type sstride[GFC_MAX_DIMENSIONS - 1]; | |
135 | index_type dstride[GFC_MAX_DIMENSIONS - 1]; | |
136 | index_type mstride[GFC_MAX_DIMENSIONS - 1]; | |
137 | GFC_INTEGER_8 *dest; | |
138 | GFC_INTEGER_8 *base; | |
139 | GFC_LOGICAL_4 *mbase; | |
140 | int rank; | |
141 | int dim; | |
142 | index_type n; | |
143 | index_type len; | |
144 | index_type delta; | |
145 | index_type mdelta; | |
146 | ||
147 | dim = (*pdim) - 1; | |
148 | rank = GFC_DESCRIPTOR_RANK (array) - 1; | |
149 | assert (rank == GFC_DESCRIPTOR_RANK (retarray)); | |
150 | if (array->dim[0].stride == 0) | |
151 | array->dim[0].stride = 1; | |
152 | if (retarray->dim[0].stride == 0) | |
153 | retarray->dim[0].stride = 1; | |
154 | ||
155 | len = array->dim[dim].ubound + 1 - array->dim[dim].lbound; | |
156 | if (len <= 0) | |
157 | return; | |
158 | delta = array->dim[dim].stride; | |
159 | mdelta = mask->dim[dim].stride; | |
160 | ||
161 | for (n = 0; n < dim; n++) | |
162 | { | |
163 | sstride[n] = array->dim[n].stride; | |
164 | mstride[n] = mask->dim[n].stride; | |
165 | extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound; | |
166 | } | |
167 | for (n = dim; n < rank; n++) | |
168 | { | |
169 | sstride[n] = array->dim[n + 1].stride; | |
170 | mstride[n] = mask->dim[n + 1].stride; | |
171 | extent[n] = | |
172 | array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound; | |
173 | } | |
174 | ||
175 | for (n = 0; n < rank; n++) | |
176 | { | |
177 | count[n] = 0; | |
178 | dstride[n] = retarray->dim[n].stride; | |
179 | if (extent[n] <= 0) | |
180 | return; | |
181 | } | |
182 | ||
183 | dest = retarray->data; | |
184 | base = array->data; | |
185 | mbase = mask->data; | |
186 | ||
187 | if (GFC_DESCRIPTOR_SIZE (mask) != 4) | |
188 | { | |
189 | /* This allows the same loop to be used for all logical types. */ | |
190 | assert (GFC_DESCRIPTOR_SIZE (mask) == 8); | |
191 | for (n = 0; n < rank; n++) | |
192 | mstride[n] <<= 1; | |
193 | mdelta <<= 1; | |
194 | mbase = (GFOR_POINTER_L8_TO_L4 (mbase)); | |
195 | } | |
196 | ||
197 | while (base) | |
198 | { | |
199 | GFC_INTEGER_8 *src; | |
200 | GFC_LOGICAL_4 *msrc; | |
201 | GFC_INTEGER_8 result; | |
202 | src = base; | |
203 | msrc = mbase; | |
204 | { | |
205 | ||
206 | result = 0; | |
207 | if (len <= 0) | |
208 | *dest = 0; | |
209 | else | |
210 | { | |
211 | for (n = 0; n < len; n++, src += delta, msrc += mdelta) | |
212 | { | |
213 | ||
214 | if (*msrc) | |
215 | result += *src; | |
216 | } | |
217 | *dest = result; | |
218 | } | |
219 | } | |
220 | /* Advance to the next element. */ | |
221 | count[0]++; | |
222 | base += sstride[0]; | |
223 | mbase += mstride[0]; | |
224 | dest += dstride[0]; | |
225 | n = 0; | |
226 | while (count[n] == extent[n]) | |
227 | { | |
228 | /* When we get to the end of a dimension, reset it and increment | |
229 | the next dimension. */ | |
230 | count[n] = 0; | |
231 | /* We could precalculate these products, but this is a less | |
232 | frequently used path so proabably not worth it. */ | |
233 | base -= sstride[n] * extent[n]; | |
234 | mbase -= mstride[n] * extent[n]; | |
235 | dest -= dstride[n] * extent[n]; | |
236 | n++; | |
237 | if (n == rank) | |
238 | { | |
239 | /* Break out of the look. */ | |
240 | base = NULL; | |
241 | break; | |
242 | } | |
243 | else | |
244 | { | |
245 | count[n]++; | |
246 | base += sstride[n]; | |
247 | mbase += mstride[n]; | |
248 | dest += dstride[n]; | |
249 | } | |
250 | } | |
251 | } | |
252 | } |