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 *ret, const gfc_array_char *array, const atype *h,
42 const char *pbound, const atype_name *pwhich, index_type size,
45 /* r.* indicates the return array. */
46 index_type rstride[GFC_MAX_DIMENSIONS];
51 /* s.* indicates the source array. */
52 index_type sstride[GFC_MAX_DIMENSIONS];
57 ` /* h.* indicates the shift array. */'
58 index_type hstride[GFC_MAX_DIMENSIONS];
60 const atype_name *hptr;
62 index_type count[GFC_MAX_DIMENSIONS];
63 index_type extent[GFC_MAX_DIMENSIONS];
71 /* The compiler cannot figure out that these are set, initialize
72 them to avoid warnings. */
85 if (ret->data == NULL)
89 ret->data = internal_malloc_size (size * size0 ((array_t *)array));
91 ret->dtype = array->dtype;
92 for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
94 ret->dim[i].lbound = 0;
95 ret->dim[i].ubound = array->dim[i].ubound - array->dim[i].lbound;
98 ret->dim[i].stride = 1;
100 ret->dim[i].stride = (ret->dim[i-1].ubound + 1) * ret->dim[i-1].stride;
105 for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
109 roffset = ret->dim[dim].stride * size;
112 soffset = array->dim[dim].stride * size;
115 len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
120 extent[n] = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
121 rstride[n] = ret->dim[dim].stride * size;
122 sstride[n] = array->dim[dim].stride * size;
124 hstride[n] = h->dim[n].stride;
135 dim = GFC_DESCRIPTOR_RANK (array);
136 rstride0 = rstride[0];
137 sstride0 = sstride[0];
138 hstride0 = hstride[0];
145 ` /* Do the shift for this dimension. */'
147 if (( sh >= 0 ? sh : -sh ) > len)
153 delta = (sh >= 0) ? sh: -sh;
157 src = &sptr[delta * soffset];
163 dest = &rptr[delta * roffset];
165 for (n = 0; n < len - delta; n++)
167 memcpy (dest, src, size);
178 memcpy (dest, pbound, size);
184 memset (dest, filler, size);
188 /* Advance to the next section. */
194 while (count[n] == extent[n])
196 /* When we get to the end of a dimension, reset it and increment
197 the next dimension. */
199 /* We could precalculate these products, but this is a less
200 frequently used path so proabably not worth it. */
201 rptr -= rstride[n] * extent[n];
202 sptr -= sstride[n] * extent[n];
203 hptr -= hstride[n] * extent[n];
207 /* Break out of the loop. */
222 void eoshift1_`'atype_kind (gfc_array_char *, const gfc_array_char *,
223 const atype *, const char *, const atype_name *);
224 export_proto(eoshift1_`'atype_kind);
227 eoshift1_`'atype_kind (gfc_array_char *ret, const gfc_array_char *array,
228 const atype *h, const char *pbound,
229 const atype_name *pwhich)
231 eoshift1 (ret, array, h, pbound, pwhich, GFC_DESCRIPTOR_SIZE (array), 0);
234 void eoshift1_`'atype_kind`'_char (gfc_array_char *, GFC_INTEGER_4,
235 const gfc_array_char *, const atype *,
236 const char *, const atype_name *,
237 GFC_INTEGER_4, GFC_INTEGER_4);
238 export_proto(eoshift1_`'atype_kind`'_char);
241 eoshift1_`'atype_kind`'_char (gfc_array_char *ret,
242 GFC_INTEGER_4 ret_length __attribute__((unused)),
243 const gfc_array_char *array, const atype *h,
244 const char *pbound, const atype_name *pwhich,
245 GFC_INTEGER_4 array_length,
246 GFC_INTEGER_4 bound_length
247 __attribute__((unused)))
249 eoshift1 (ret, array, h, pbound, pwhich, array_length, ' ');