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 <stdlib.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};
-
/* TODO: make this work for large shifts when
sizeof(int) < sizeof (index_type). */
static void
-eoshift2 (gfc_array_char *, const gfc_array_char *,
- int, const gfc_array_char *, int );
-
-static void
eoshift2 (gfc_array_char *ret, const gfc_array_char *array,
- int shift, const gfc_array_char *bound, int which)
+ int shift, const gfc_array_char *bound, int which,
+ index_type size, char filler)
{
/* r.* indicates the return array. */
index_type rstride[GFC_MAX_DIMENSIONS];
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type dim;
- index_type size;
index_type len;
index_type n;
soffset = 0;
roffset = 0;
- size = GFC_DESCRIPTOR_SIZE (ret);
-
if (ret->data == NULL)
{
int i;
ret->data = internal_malloc_size (size * size0 ((array_t *)array));
- ret->base = 0;
+ ret->offset = 0;
ret->dtype = array->dtype;
for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
{
extent[0] = 1;
count[0] = 0;
- size = GFC_DESCRIPTOR_SIZE (array);
+ sstride[0] = -1;
+ rstride[0] = -1;
+ bstride[0] = -1;
n = 0;
for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
{
bstride0 = bstride[0];
rptr = ret->data;
sptr = array->data;
+
+ if ((shift >= 0 ? shift : -shift ) > len)
+ {
+ shift = len;
+ len = 0;
+ }
+ else
+ {
+ if (shift > 0)
+ len = len - shift;
+ else
+ len = len + shift;
+ }
+
if (bound)
bptr = bound->data;
else
- bptr = zeros;
-
- if (shift > 0)
- len = len - shift;
- else
- len = len + shift;
+ bptr = NULL;
while (rptr)
{
n = -shift;
}
- while (n--)
- {
- memcpy (dest, bptr, size);
- dest += roffset;
- }
+ if (bptr)
+ while (n--)
+ {
+ memcpy (dest, bptr, size);
+ dest += roffset;
+ }
+ else
+ while (n--)
+ {
+ memset (dest, filler, size);
+ 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];
bptr -= bstride[n] * extent[n];
}
-extern void eoshift2_1 (gfc_array_char *, const gfc_array_char *,
- const GFC_INTEGER_1 *, const gfc_array_char *,
- const GFC_INTEGER_1 *);
-export_proto(eoshift2_1);
-
-void
-eoshift2_1 (gfc_array_char *ret, const gfc_array_char *array,
- const GFC_INTEGER_1 *pshift, const gfc_array_char *bound,
- const GFC_INTEGER_1 *pdim)
-{
- eoshift2 (ret, array, *pshift, bound, pdim ? *pdim : 1);
-}
-
-
-extern void eoshift2_2 (gfc_array_char *, const gfc_array_char *,
- const GFC_INTEGER_2 *, const gfc_array_char *,
- const GFC_INTEGER_2 *);
-export_proto(eoshift2_2);
-
-void
-eoshift2_2 (gfc_array_char *ret, const gfc_array_char *array,
- const GFC_INTEGER_2 *pshift, const gfc_array_char *bound,
- const GFC_INTEGER_2 *pdim)
-{
- eoshift2 (ret, array, *pshift, bound, pdim ? *pdim : 1);
-}
-
-
-extern void eoshift2_4 (gfc_array_char *, const gfc_array_char *,
- const GFC_INTEGER_4 *, const gfc_array_char *,
- const GFC_INTEGER_4 *);
-export_proto(eoshift2_4);
-
-void
-eoshift2_4 (gfc_array_char *ret, const gfc_array_char *array,
- const GFC_INTEGER_4 *pshift, const gfc_array_char *bound,
- const GFC_INTEGER_4 *pdim)
-{
- eoshift2 (ret, array, *pshift, bound, pdim ? *pdim : 1);
-}
-
-
-extern void eoshift2_8 (gfc_array_char *, const gfc_array_char *,
- const GFC_INTEGER_8 *, const gfc_array_char *,
- const GFC_INTEGER_8 *);
-export_proto(eoshift2_8);
-
-void
-eoshift2_8 (gfc_array_char *ret, const gfc_array_char *array,
- const GFC_INTEGER_8 *pshift, const gfc_array_char *bound,
- const GFC_INTEGER_8 *pdim)
-{
- eoshift2 (ret, array, *pshift, bound, pdim ? *pdim : 1);
-}
+#define DEFINE_EOSHIFT(N) \
+ extern void eoshift2_##N (gfc_array_char *, const gfc_array_char *, \
+ const GFC_INTEGER_##N *, const gfc_array_char *, \
+ const GFC_INTEGER_##N *); \
+ export_proto(eoshift2_##N); \
+ \
+ void \
+ eoshift2_##N (gfc_array_char *ret, const gfc_array_char *array, \
+ const GFC_INTEGER_##N *pshift, const gfc_array_char *pbound, \
+ const GFC_INTEGER_##N *pdim) \
+ { \
+ eoshift2 (ret, array, *pshift, pbound, pdim ? *pdim : 1, \
+ GFC_DESCRIPTOR_SIZE (array), 0); \
+ } \
+ \
+ extern void eoshift2_##N##_char (gfc_array_char *, GFC_INTEGER_4, \
+ const gfc_array_char *, \
+ const GFC_INTEGER_##N *, \
+ const gfc_array_char *, \
+ const GFC_INTEGER_##N *, \
+ GFC_INTEGER_4, GFC_INTEGER_4); \
+ export_proto(eoshift2_##N##_char); \
+ \
+ void \
+ eoshift2_##N##_char (gfc_array_char *ret, \
+ GFC_INTEGER_4 ret_length __attribute__((unused)), \
+ const gfc_array_char *array, \
+ const GFC_INTEGER_##N *pshift, \
+ const gfc_array_char *pbound, \
+ const GFC_INTEGER_##N *pdim, \
+ GFC_INTEGER_4 array_length, \
+ GFC_INTEGER_4 bound_length __attribute__((unused))) \
+ { \
+ eoshift2 (ret, array, *pshift, pbound, pdim ? *pdim : 1, \
+ array_length, ' '); \
+ }
+
+DEFINE_EOSHIFT (1);
+DEFINE_EOSHIFT (2);
+DEFINE_EOSHIFT (4);
+DEFINE_EOSHIFT (8);
OSDN Git Service
