1 `/* Implementation of the EOSHIFT intrinsic
2 Copyright 2002, 2005 Free Software Foundation, Inc.
3 Contributed by Paul Brook <paul@nowt.org>
5 This file is part of the GNU Fortran 95 runtime library (libgfortran).
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.
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
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.
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. */
35 #include "libgfortran.h"'
38 `#if defined (HAVE_'atype_name`)'
41 eoshift1 (gfc_array_char * const restrict ret,
42 const gfc_array_char * const restrict array,
43 const atype * const restrict h,
44 const char * const restrict pbound,
45 const atype_name * const restrict pwhich,
46 index_type size, char filler)
48 /* r.* indicates the return array. */
49 index_type rstride[GFC_MAX_DIMENSIONS];
54 /* s.* indicates the source array. */
55 index_type sstride[GFC_MAX_DIMENSIONS];
60 ` /* h.* indicates the shift array. */'
61 index_type hstride[GFC_MAX_DIMENSIONS];
63 const atype_name *hptr;
65 index_type count[GFC_MAX_DIMENSIONS];
66 index_type extent[GFC_MAX_DIMENSIONS];
74 /* The compiler cannot figure out that these are set, initialize
75 them to avoid warnings. */
88 if (ret->data == NULL)
92 ret->data = internal_malloc_size (size * size0 ((array_t *)array));
94 ret->dtype = array->dtype;
95 for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
97 ret->dim[i].lbound = 0;
98 ret->dim[i].ubound = array->dim[i].ubound - array->dim[i].lbound;
101 ret->dim[i].stride = 1;
103 ret->dim[i].stride = (ret->dim[i-1].ubound + 1) * ret->dim[i-1].stride;
108 for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
112 roffset = ret->dim[dim].stride * size;
115 soffset = array->dim[dim].stride * size;
118 len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
123 extent[n] = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
124 rstride[n] = ret->dim[dim].stride * size;
125 sstride[n] = array->dim[dim].stride * size;
127 hstride[n] = h->dim[n].stride;
138 dim = GFC_DESCRIPTOR_RANK (array);
139 rstride0 = rstride[0];
140 sstride0 = sstride[0];
141 hstride0 = hstride[0];
148 ` /* Do the shift for this dimension. */'
150 if (( sh >= 0 ? sh : -sh ) > len)
156 delta = (sh >= 0) ? sh: -sh;
160 src = &sptr[delta * soffset];
166 dest = &rptr[delta * roffset];
168 for (n = 0; n < len - delta; n++)
170 memcpy (dest, src, size);
181 memcpy (dest, pbound, size);
187 memset (dest, filler, size);
191 /* Advance to the next section. */
197 while (count[n] == extent[n])
199 /* When we get to the end of a dimension, reset it and increment
200 the next dimension. */
202 /* We could precalculate these products, but this is a less
203 frequently used path so proabably not worth it. */
204 rptr -= rstride[n] * extent[n];
205 sptr -= sstride[n] * extent[n];
206 hptr -= hstride[n] * extent[n];
210 /* Break out of the loop. */
225 void eoshift1_`'atype_kind (gfc_array_char * const restrict,
226 const gfc_array_char * const restrict,
227 const atype * const restrict, const char * const restrict,
228 const atype_name * const restrict);
229 export_proto(eoshift1_`'atype_kind);
232 eoshift1_`'atype_kind (gfc_array_char * const restrict ret,
233 const gfc_array_char * const restrict array,
234 const atype * const restrict h,
235 const char * const restrict pbound,
236 const atype_name * const restrict pwhich)
238 eoshift1 (ret, array, h, pbound, pwhich, GFC_DESCRIPTOR_SIZE (array), 0);
241 void eoshift1_`'atype_kind`'_char (gfc_array_char * const restrict,
243 const gfc_array_char * const restrict,
244 const atype * const restrict,
245 const char * const restrict,
246 const atype_name * const restrict,
247 GFC_INTEGER_4, GFC_INTEGER_4);
248 export_proto(eoshift1_`'atype_kind`'_char);
251 eoshift1_`'atype_kind`'_char (gfc_array_char * const restrict ret,
252 GFC_INTEGER_4 ret_length __attribute__((unused)),
253 const gfc_array_char * const restrict array,
254 const atype * const restrict h,
255 const char * const restrict pbound,
256 const atype_name * const restrict pwhich,
257 GFC_INTEGER_4 array_length,
258 GFC_INTEGER_4 bound_length __attribute__((unused)))
260 eoshift1 (ret, array, h, pbound, pwhich, array_length, ' ');