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644cb69f | 1 | /* Implementation of the COUNT intrinsic |
36ae8a61 | 2 | Copyright 2002, 2007 Free Software Foundation, Inc. |
644cb69f FXC |
3 | Contributed by Paul Brook <paul@nowt.org> |
4 | ||
5 | This file is part of the GNU Fortran 95 runtime library (libgfortran). | |
6 | ||
7 | Libgfortran is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU General Public | |
9 | License as published by the Free Software Foundation; either | |
10 | version 2 of the License, or (at your option) any later version. | |
11 | ||
12 | In addition to the permissions in the GNU General Public License, the | |
13 | Free Software Foundation gives you unlimited permission to link the | |
14 | compiled version of this file into combinations with other programs, | |
15 | and to distribute those combinations without any restriction coming | |
16 | from the use of this file. (The General Public License restrictions | |
17 | do apply in other respects; for example, they cover modification of | |
18 | the file, and distribution when not linked into a combine | |
19 | executable.) | |
20 | ||
21 | Libgfortran is distributed in the hope that it will be useful, | |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
25 | ||
26 | You should have received a copy of the GNU General Public | |
27 | License along with libgfortran; see the file COPYING. If not, | |
28 | write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
29 | Boston, MA 02110-1301, USA. */ | |
30 | ||
36ae8a61 | 31 | #include "libgfortran.h" |
644cb69f FXC |
32 | #include <stdlib.h> |
33 | #include <assert.h> | |
644cb69f FXC |
34 | |
35 | ||
36 | #if defined (HAVE_GFC_LOGICAL_4) && defined (HAVE_GFC_INTEGER_16) | |
37 | ||
38 | ||
64acfd99 JB |
39 | extern void count_16_l4 (gfc_array_i16 * const restrict, |
40 | gfc_array_l4 * const restrict, const index_type * const restrict); | |
644cb69f FXC |
41 | export_proto(count_16_l4); |
42 | ||
43 | void | |
64acfd99 JB |
44 | count_16_l4 (gfc_array_i16 * const restrict retarray, |
45 | gfc_array_l4 * const restrict array, | |
46 | const index_type * const restrict pdim) | |
644cb69f FXC |
47 | { |
48 | index_type count[GFC_MAX_DIMENSIONS]; | |
49 | index_type extent[GFC_MAX_DIMENSIONS]; | |
50 | index_type sstride[GFC_MAX_DIMENSIONS]; | |
51 | index_type dstride[GFC_MAX_DIMENSIONS]; | |
64acfd99 JB |
52 | const GFC_LOGICAL_4 * restrict base; |
53 | GFC_INTEGER_16 * restrict dest; | |
644cb69f FXC |
54 | index_type rank; |
55 | index_type n; | |
56 | index_type len; | |
57 | index_type delta; | |
58 | index_type dim; | |
59 | ||
60 | /* Make dim zero based to avoid confusion. */ | |
61 | dim = (*pdim) - 1; | |
62 | rank = GFC_DESCRIPTOR_RANK (array) - 1; | |
63 | ||
644cb69f FXC |
64 | len = array->dim[dim].ubound + 1 - array->dim[dim].lbound; |
65 | delta = array->dim[dim].stride; | |
66 | ||
67 | for (n = 0; n < dim; n++) | |
68 | { | |
69 | sstride[n] = array->dim[n].stride; | |
70 | extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound; | |
80ee04b9 TK |
71 | |
72 | if (extent[n] < 0) | |
73 | extent[n] = 0; | |
644cb69f FXC |
74 | } |
75 | for (n = dim; n < rank; n++) | |
76 | { | |
77 | sstride[n] = array->dim[n + 1].stride; | |
78 | extent[n] = | |
79 | array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound; | |
80ee04b9 TK |
80 | |
81 | if (extent[n] < 0) | |
82 | extent[n] = 0; | |
644cb69f FXC |
83 | } |
84 | ||
85 | if (retarray->data == NULL) | |
86 | { | |
80ee04b9 TK |
87 | size_t alloc_size; |
88 | ||
644cb69f FXC |
89 | for (n = 0; n < rank; n++) |
90 | { | |
91 | retarray->dim[n].lbound = 0; | |
92 | retarray->dim[n].ubound = extent[n]-1; | |
93 | if (n == 0) | |
94 | retarray->dim[n].stride = 1; | |
95 | else | |
96 | retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1]; | |
97 | } | |
98 | ||
644cb69f FXC |
99 | retarray->offset = 0; |
100 | retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank; | |
80ee04b9 TK |
101 | |
102 | alloc_size = sizeof (GFC_INTEGER_16) * retarray->dim[rank-1].stride | |
103 | * extent[rank-1]; | |
104 | ||
105 | if (alloc_size == 0) | |
106 | { | |
107 | /* Make sure we have a zero-sized array. */ | |
108 | retarray->dim[0].lbound = 0; | |
109 | retarray->dim[0].ubound = -1; | |
110 | return; | |
111 | } | |
112 | else | |
113 | retarray->data = internal_malloc_size (alloc_size); | |
644cb69f FXC |
114 | } |
115 | else | |
116 | { | |
644cb69f | 117 | if (rank != GFC_DESCRIPTOR_RANK (retarray)) |
fd6590f8 | 118 | runtime_error ("rank of return array incorrect in" |
ccacefc7 TK |
119 | " COUNT intrinsic: is %ld, should be %ld", |
120 | (long int) (GFC_DESCRIPTOR_RANK (retarray)), | |
121 | (long int) rank); | |
fd6590f8 TK |
122 | |
123 | if (compile_options.bounds_check) | |
124 | { | |
125 | for (n=0; n < rank; n++) | |
126 | { | |
127 | index_type ret_extent; | |
128 | ||
129 | ret_extent = retarray->dim[n].ubound + 1 | |
130 | - retarray->dim[n].lbound; | |
131 | if (extent[n] != ret_extent) | |
132 | runtime_error ("Incorrect extent in return value of" | |
ccacefc7 TK |
133 | " COUNT intrinsic in dimension %ld:" |
134 | " is %ld, should be %ld", (long int) n + 1, | |
fd6590f8 TK |
135 | (long int) ret_extent, (long int) extent[n]); |
136 | } | |
137 | } | |
644cb69f FXC |
138 | } |
139 | ||
140 | for (n = 0; n < rank; n++) | |
141 | { | |
142 | count[n] = 0; | |
143 | dstride[n] = retarray->dim[n].stride; | |
144 | if (extent[n] <= 0) | |
145 | len = 0; | |
146 | } | |
147 | ||
148 | base = array->data; | |
149 | dest = retarray->data; | |
150 | ||
151 | while (base) | |
152 | { | |
64acfd99 | 153 | const GFC_LOGICAL_4 * restrict src; |
644cb69f FXC |
154 | GFC_INTEGER_16 result; |
155 | src = base; | |
156 | { | |
157 | ||
158 | result = 0; | |
159 | if (len <= 0) | |
160 | *dest = 0; | |
161 | else | |
162 | { | |
163 | for (n = 0; n < len; n++, src += delta) | |
164 | { | |
165 | ||
166 | if (*src) | |
167 | result++; | |
168 | } | |
169 | *dest = result; | |
170 | } | |
171 | } | |
172 | /* Advance to the next element. */ | |
173 | count[0]++; | |
174 | base += sstride[0]; | |
175 | dest += dstride[0]; | |
176 | n = 0; | |
177 | while (count[n] == extent[n]) | |
178 | { | |
179 | /* When we get to the end of a dimension, reset it and increment | |
180 | the next dimension. */ | |
181 | count[n] = 0; | |
182 | /* We could precalculate these products, but this is a less | |
5d7adf7a | 183 | frequently used path so probably not worth it. */ |
644cb69f FXC |
184 | base -= sstride[n] * extent[n]; |
185 | dest -= dstride[n] * extent[n]; | |
186 | n++; | |
187 | if (n == rank) | |
188 | { | |
189 | /* Break out of the look. */ | |
190 | base = NULL; | |
191 | break; | |
192 | } | |
193 | else | |
194 | { | |
195 | count[n]++; | |
196 | base += sstride[n]; | |
197 | dest += dstride[n]; | |
198 | } | |
199 | } | |
200 | } | |
201 | } | |
202 | ||
203 | #endif |