1 /* Implementation of the EOSHIFT intrinsic
2 Copyright 2002, 2005, 2007, 2009 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 3 of the License, or (at your option) any later version.
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 General Public License for more details.
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
26 #include "libgfortran.h"
32 #if defined (HAVE_GFC_INTEGER_8)
35 eoshift1 (gfc_array_char
* const restrict ret
,
36 const gfc_array_char
* const restrict array
,
37 const gfc_array_i8
* const restrict h
,
38 const char * const restrict pbound
,
39 const GFC_INTEGER_8
* const restrict pwhich
,
40 const char * filler
, index_type filler_len
)
42 /* r.* indicates the return array. */
43 index_type rstride
[GFC_MAX_DIMENSIONS
];
48 /* s.* indicates the source array. */
49 index_type sstride
[GFC_MAX_DIMENSIONS
];
54 /* h.* indicates the shift array. */
55 index_type hstride
[GFC_MAX_DIMENSIONS
];
57 const GFC_INTEGER_8
*hptr
;
59 index_type count
[GFC_MAX_DIMENSIONS
];
60 index_type extent
[GFC_MAX_DIMENSIONS
];
69 /* The compiler cannot figure out that these are set, initialize
70 them to avoid warnings. */
75 size
= GFC_DESCRIPTOR_SIZE(array
);
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
++)
96 ub
= GFC_DESCRIPTOR_EXTENT(array
,i
) - 1;
101 str
= GFC_DESCRIPTOR_EXTENT(ret
,i
-1)
102 * GFC_DESCRIPTOR_STRIDE(ret
,i
-1);
104 GFC_DIMENSION_SET(ret
->dim
[i
], 0, ub
, str
);
110 if (size0 ((array_t
*) ret
) == 0)
115 for (dim
= 0; dim
< GFC_DESCRIPTOR_RANK (array
); dim
++)
119 roffset
= GFC_DESCRIPTOR_STRIDE_BYTES(ret
,dim
);
122 soffset
= GFC_DESCRIPTOR_STRIDE_BYTES(array
,dim
);
125 len
= GFC_DESCRIPTOR_EXTENT(array
,dim
);
130 extent
[n
] = GFC_DESCRIPTOR_EXTENT(array
,dim
);
131 rstride
[n
] = GFC_DESCRIPTOR_STRIDE_BYTES(ret
,dim
);
132 sstride
[n
] = GFC_DESCRIPTOR_STRIDE_BYTES(array
,dim
);
134 hstride
[n
] = GFC_DESCRIPTOR_STRIDE(h
,n
);
145 dim
= GFC_DESCRIPTOR_RANK (array
);
146 rstride0
= rstride
[0];
147 sstride0
= sstride
[0];
148 hstride0
= hstride
[0];
155 /* Do the shift for this dimension. */
157 if (( sh
>= 0 ? sh
: -sh
) > len
)
163 delta
= (sh
>= 0) ? sh
: -sh
;
167 src
= &sptr
[delta
* soffset
];
173 dest
= &rptr
[delta
* roffset
];
175 for (n
= 0; n
< len
- delta
; n
++)
177 memcpy (dest
, src
, size
);
188 memcpy (dest
, pbound
, size
);
197 memset (dest
, filler
[0], size
);
199 for (i
= 0; i
< size
; i
+= filler_len
)
200 memcpy (&dest
[i
], filler
, filler_len
);
205 /* Advance to the next section. */
211 while (count
[n
] == extent
[n
])
213 /* When we get to the end of a dimension, reset it and increment
214 the next dimension. */
216 /* We could precalculate these products, but this is a less
217 frequently used path so probably not worth it. */
218 rptr
-= rstride
[n
] * extent
[n
];
219 sptr
-= sstride
[n
] * extent
[n
];
220 hptr
-= hstride
[n
] * extent
[n
];
224 /* Break out of the loop. */
239 void eoshift1_8 (gfc_array_char
* const restrict
,
240 const gfc_array_char
* const restrict
,
241 const gfc_array_i8
* const restrict
, const char * const restrict
,
242 const GFC_INTEGER_8
* const restrict
);
243 export_proto(eoshift1_8
);
246 eoshift1_8 (gfc_array_char
* const restrict ret
,
247 const gfc_array_char
* const restrict array
,
248 const gfc_array_i8
* const restrict h
,
249 const char * const restrict pbound
,
250 const GFC_INTEGER_8
* const restrict pwhich
)
252 eoshift1 (ret
, array
, h
, pbound
, pwhich
, "\0", 1);
256 void eoshift1_8_char (gfc_array_char
* const restrict
,
258 const gfc_array_char
* const restrict
,
259 const gfc_array_i8
* const restrict
,
260 const char * const restrict
,
261 const GFC_INTEGER_8
* const restrict
,
262 GFC_INTEGER_4
, GFC_INTEGER_4
);
263 export_proto(eoshift1_8_char
);
266 eoshift1_8_char (gfc_array_char
* const restrict ret
,
267 GFC_INTEGER_4 ret_length
__attribute__((unused
)),
268 const gfc_array_char
* const restrict array
,
269 const gfc_array_i8
* const restrict h
,
270 const char * const restrict pbound
,
271 const GFC_INTEGER_8
* const restrict pwhich
,
272 GFC_INTEGER_4 array_length
__attribute__((unused
)),
273 GFC_INTEGER_4 bound_length
__attribute__((unused
)))
275 eoshift1 (ret
, array
, h
, pbound
, pwhich
, " ", 1);
279 void eoshift1_8_char4 (gfc_array_char
* const restrict
,
281 const gfc_array_char
* const restrict
,
282 const gfc_array_i8
* const restrict
,
283 const char * const restrict
,
284 const GFC_INTEGER_8
* const restrict
,
285 GFC_INTEGER_4
, GFC_INTEGER_4
);
286 export_proto(eoshift1_8_char4
);
289 eoshift1_8_char4 (gfc_array_char
* const restrict ret
,
290 GFC_INTEGER_4 ret_length
__attribute__((unused
)),
291 const gfc_array_char
* const restrict array
,
292 const gfc_array_i8
* const restrict h
,
293 const char * const restrict pbound
,
294 const GFC_INTEGER_8
* const restrict pwhich
,
295 GFC_INTEGER_4 array_length
__attribute__((unused
)),
296 GFC_INTEGER_4 bound_length
__attribute__((unused
)))
298 static const gfc_char4_t space
= (unsigned char) ' ';
299 eoshift1 (ret
, array
, h
, pbound
, pwhich
,
300 (const char *) &space
, sizeof (gfc_char4_t
));