1 /* Implementation of the EOSHIFT intrinsic
2 Copyright 2002, 2005, 2007 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. */
31 #include "libgfortran.h"
37 #if defined (HAVE_GFC_INTEGER_16)
40 eoshift3 (gfc_array_char
* const restrict ret
,
41 const gfc_array_char
* const restrict array
,
42 const gfc_array_i16
* const restrict h
,
43 const gfc_array_char
* const restrict bound
,
44 const GFC_INTEGER_16
* const restrict pwhich
,
45 index_type size
, const char * filler
, index_type filler_len
)
47 /* r.* indicates the return array. */
48 index_type rstride
[GFC_MAX_DIMENSIONS
];
53 /* s.* indicates the source array. */
54 index_type sstride
[GFC_MAX_DIMENSIONS
];
59 /* h.* indicates the shift array. */
60 index_type hstride
[GFC_MAX_DIMENSIONS
];
62 const GFC_INTEGER_16
*hptr
;
63 /* b.* indicates the bound array. */
64 index_type bstride
[GFC_MAX_DIMENSIONS
];
68 index_type count
[GFC_MAX_DIMENSIONS
];
69 index_type extent
[GFC_MAX_DIMENSIONS
];
77 /* The compiler cannot figure out that these are set, initialize
78 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
;
111 for (dim
= 0; dim
< GFC_DESCRIPTOR_RANK (array
); dim
++)
115 roffset
= ret
->dim
[dim
].stride
* size
;
118 soffset
= array
->dim
[dim
].stride
* size
;
121 len
= array
->dim
[dim
].ubound
+ 1 - array
->dim
[dim
].lbound
;
126 extent
[n
] = array
->dim
[dim
].ubound
+ 1 - array
->dim
[dim
].lbound
;
127 rstride
[n
] = ret
->dim
[dim
].stride
* size
;
128 sstride
[n
] = array
->dim
[dim
].stride
* size
;
130 hstride
[n
] = h
->dim
[n
].stride
;
132 bstride
[n
] = bound
->dim
[n
].stride
* size
;
144 if (bound
&& bstride
[0] == 0)
147 dim
= GFC_DESCRIPTOR_RANK (array
);
148 rstride0
= rstride
[0];
149 sstride0
= sstride
[0];
150 hstride0
= hstride
[0];
151 bstride0
= bstride
[0];
162 /* Do the shift for this dimension. */
164 if (( sh
>= 0 ? sh
: -sh
) > len
)
170 delta
= (sh
>= 0) ? sh
: -sh
;
174 src
= &sptr
[delta
* soffset
];
180 dest
= &rptr
[delta
* roffset
];
182 for (n
= 0; n
< len
- delta
; n
++)
184 memcpy (dest
, src
, size
);
195 memcpy (dest
, bptr
, size
);
204 memset (dest
, filler
[0], size
);
206 for (i
= 0; i
< size
; i
+= filler_len
)
207 memcpy (&dest
[i
], filler
, filler_len
);
212 /* Advance to the next section. */
219 while (count
[n
] == extent
[n
])
221 /* When we get to the end of a dimension, reset it and increment
222 the next dimension. */
224 /* We could precalculate these products, but this is a less
225 frequently used path so probably not worth it. */
226 rptr
-= rstride
[n
] * extent
[n
];
227 sptr
-= sstride
[n
] * extent
[n
];
228 hptr
-= hstride
[n
] * extent
[n
];
229 bptr
-= bstride
[n
] * extent
[n
];
233 /* Break out of the loop. */
249 extern void eoshift3_16 (gfc_array_char
* const restrict
,
250 const gfc_array_char
* const restrict
,
251 const gfc_array_i16
* const restrict
,
252 const gfc_array_char
* const restrict
,
253 const GFC_INTEGER_16
*);
254 export_proto(eoshift3_16
);
257 eoshift3_16 (gfc_array_char
* const restrict ret
,
258 const gfc_array_char
* const restrict array
,
259 const gfc_array_i16
* const restrict h
,
260 const gfc_array_char
* const restrict bound
,
261 const GFC_INTEGER_16
* const restrict pwhich
)
263 eoshift3 (ret
, array
, h
, bound
, pwhich
, GFC_DESCRIPTOR_SIZE (array
),
268 extern void eoshift3_16_char (gfc_array_char
* const restrict
,
270 const gfc_array_char
* const restrict
,
271 const gfc_array_i16
* const restrict
,
272 const gfc_array_char
* const restrict
,
273 const GFC_INTEGER_16
* const restrict
,
274 GFC_INTEGER_4
, GFC_INTEGER_4
);
275 export_proto(eoshift3_16_char
);
278 eoshift3_16_char (gfc_array_char
* const restrict ret
,
279 GFC_INTEGER_4 ret_length
__attribute__((unused
)),
280 const gfc_array_char
* const restrict array
,
281 const gfc_array_i16
* const restrict h
,
282 const gfc_array_char
* const restrict bound
,
283 const GFC_INTEGER_16
* const restrict pwhich
,
284 GFC_INTEGER_4 array_length
,
285 GFC_INTEGER_4 bound_length
__attribute__((unused
)))
287 eoshift3 (ret
, array
, h
, bound
, pwhich
, array_length
, " ", 1);
291 extern void eoshift3_16_char4 (gfc_array_char
* const restrict
,
293 const gfc_array_char
* const restrict
,
294 const gfc_array_i16
* const restrict
,
295 const gfc_array_char
* const restrict
,
296 const GFC_INTEGER_16
* const restrict
,
297 GFC_INTEGER_4
, GFC_INTEGER_4
);
298 export_proto(eoshift3_16_char4
);
301 eoshift3_16_char4 (gfc_array_char
* const restrict ret
,
302 GFC_INTEGER_4 ret_length
__attribute__((unused
)),
303 const gfc_array_char
* const restrict array
,
304 const gfc_array_i16
* const restrict h
,
305 const gfc_array_char
* const restrict bound
,
306 const GFC_INTEGER_16
* const restrict pwhich
,
307 GFC_INTEGER_4 array_length
,
308 GFC_INTEGER_4 bound_length
__attribute__((unused
)))
310 static const gfc_char4_t space
= (unsigned char) ' ';
311 eoshift3 (ret
, array
, h
, bound
, pwhich
, array_length
* sizeof (gfc_char4_t
),
312 (const char *) &space
, sizeof (gfc_char4_t
));