/* Implementation of the EOSHIFT intrinsic
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright 2002, 2005, 2007 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran 95 runtime library (libgfortran).
You should have received a copy of the GNU General Public
License along with libgfortran; see the file COPYING. If not,
-write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
-#include "config.h"
+#include "libgfortran.h"
#include <stdlib.h>
#include <assert.h>
#include <string.h>
-#include "libgfortran.h"
-static const char zeros[16] =
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-extern void eoshift1_4 (const gfc_array_char *,
- const gfc_array_char *,
- const gfc_array_i4 *, const char *,
- const GFC_INTEGER_4 *);
-export_proto(eoshift1_4);
+#if defined (HAVE_GFC_INTEGER_4)
-void
-eoshift1_4 (const gfc_array_char *ret,
- const gfc_array_char *array,
- const gfc_array_i4 *h, const char *pbound,
- const GFC_INTEGER_4 *pwhich)
+static void
+eoshift1 (gfc_array_char * const restrict ret,
+ const gfc_array_char * const restrict array,
+ const gfc_array_i4 * const restrict h,
+ const char * const restrict pbound,
+ const GFC_INTEGER_4 * const restrict pwhich,
+ index_type size, const char * filler, index_type filler_len)
{
/* r.* indicates the return array. */
- index_type rstride[GFC_MAX_DIMENSIONS - 1];
+ index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type roffset;
char *rptr;
- char *dest;
+ char * restrict dest;
/* s.* indicates the source array. */
- index_type sstride[GFC_MAX_DIMENSIONS - 1];
+ index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
index_type soffset;
const char *sptr;
const char *src;
/* h.* indicates the shift array. */
- index_type hstride[GFC_MAX_DIMENSIONS - 1];
+ index_type hstride[GFC_MAX_DIMENSIONS];
index_type hstride0;
const GFC_INTEGER_4 *hptr;
- index_type count[GFC_MAX_DIMENSIONS - 1];
- index_type extent[GFC_MAX_DIMENSIONS - 1];
+ index_type count[GFC_MAX_DIMENSIONS];
+ index_type extent[GFC_MAX_DIMENSIONS];
index_type dim;
- index_type size;
index_type len;
index_type n;
int which;
GFC_INTEGER_4 sh;
GFC_INTEGER_4 delta;
+ /* The compiler cannot figure out that these are set, initialize
+ them to avoid warnings. */
+ len = 0;
+ soffset = 0;
+ roffset = 0;
+
if (pwhich)
which = *pwhich - 1;
else
which = 0;
- if (!pbound)
- pbound = zeros;
-
- size = GFC_DESCRIPTOR_SIZE (ret);
-
extent[0] = 1;
count[0] = 0;
- size = GFC_DESCRIPTOR_SIZE (array);
+
+ if (ret->data == NULL)
+ {
+ int i;
+
+ ret->data = internal_malloc_size (size * size0 ((array_t *)array));
+ ret->offset = 0;
+ ret->dtype = array->dtype;
+ for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
+ {
+ ret->dim[i].lbound = 0;
+ ret->dim[i].ubound = array->dim[i].ubound - array->dim[i].lbound;
+
+ if (i == 0)
+ ret->dim[i].stride = 1;
+ else
+ ret->dim[i].stride = (ret->dim[i-1].ubound + 1) * ret->dim[i-1].stride;
+ }
+ }
+ else
+ {
+ if (size0 ((array_t *) ret) == 0)
+ return;
+ }
+
n = 0;
for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
{
{
/* Do the shift for this dimension. */
sh = *hptr;
- delta = (sh >= 0) ? sh: -sh;
+ if (( sh >= 0 ? sh : -sh ) > len)
+ {
+ delta = len;
+ sh = len;
+ }
+ else
+ delta = (sh >= 0) ? sh: -sh;
+
if (sh > 0)
{
src = &sptr[delta * soffset];
dest = rptr;
n = delta;
- while (n--)
- {
- memcpy (dest, pbound, size);
- dest += roffset;
- }
+ if (pbound)
+ while (n--)
+ {
+ memcpy (dest, pbound, size);
+ dest += roffset;
+ }
+ else
+ while (n--)
+ {
+ index_type i;
+
+ if (filler_len == 1)
+ memset (dest, filler[0], size);
+ else
+ for (i = 0; i < size; i += filler_len)
+ memcpy (&dest[i], filler, filler_len);
+
+ dest += roffset;
+ }
/* Advance to the next section. */
rptr += rstride0;
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
- frequently used path so proabably not worth it. */
+ frequently used path so probably not worth it. */
rptr -= rstride[n] * extent[n];
sptr -= sstride[n] * extent[n];
hptr -= hstride[n] * extent[n];
}
}
}
+
+void eoshift1_4 (gfc_array_char * const restrict,
+ const gfc_array_char * const restrict,
+ const gfc_array_i4 * const restrict, const char * const restrict,
+ const GFC_INTEGER_4 * const restrict);
+export_proto(eoshift1_4);
+
+void
+eoshift1_4 (gfc_array_char * const restrict ret,
+ const gfc_array_char * const restrict array,
+ const gfc_array_i4 * const restrict h,
+ const char * const restrict pbound,
+ const GFC_INTEGER_4 * const restrict pwhich)
+{
+ eoshift1 (ret, array, h, pbound, pwhich, GFC_DESCRIPTOR_SIZE (array),
+ "\0", 1);
+}
+
+
+void eoshift1_4_char (gfc_array_char * const restrict,
+ GFC_INTEGER_4,
+ const gfc_array_char * const restrict,
+ const gfc_array_i4 * const restrict,
+ const char * const restrict,
+ const GFC_INTEGER_4 * const restrict,
+ GFC_INTEGER_4, GFC_INTEGER_4);
+export_proto(eoshift1_4_char);
+
+void
+eoshift1_4_char (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char * const restrict array,
+ const gfc_array_i4 * const restrict h,
+ const char * const restrict pbound,
+ const GFC_INTEGER_4 * const restrict pwhich,
+ GFC_INTEGER_4 array_length,
+ GFC_INTEGER_4 bound_length __attribute__((unused)))
+{
+ eoshift1 (ret, array, h, pbound, pwhich, array_length, " ", 1);
+}
+
+
+void eoshift1_4_char4 (gfc_array_char * const restrict,
+ GFC_INTEGER_4,
+ const gfc_array_char * const restrict,
+ const gfc_array_i4 * const restrict,
+ const char * const restrict,
+ const GFC_INTEGER_4 * const restrict,
+ GFC_INTEGER_4, GFC_INTEGER_4);
+export_proto(eoshift1_4_char4);
+
+void
+eoshift1_4_char4 (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char * const restrict array,
+ const gfc_array_i4 * const restrict h,
+ const char * const restrict pbound,
+ const GFC_INTEGER_4 * const restrict pwhich,
+ GFC_INTEGER_4 array_length,
+ GFC_INTEGER_4 bound_length __attribute__((unused)))
+{
+ static const gfc_char4_t space = (unsigned char) ' ';
+ eoshift1 (ret, array, h, pbound, pwhich, array_length * sizeof (gfc_char4_t),
+ (const char *) &space, sizeof (gfc_char4_t));
+}
+
+#endif