#include "config.h"
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include "libgfortran.h"
static void
eoshift0 (gfc_array_char * ret, const gfc_array_char * array,
int shift, const char * pbound, int which, index_type size,
char filler)
{
index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type roffset;
char *rptr;
char *dest;
index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
index_type soffset;
const char *sptr;
const char *src;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type dim;
index_type len;
index_type n;
len = 0;
soffset = 0;
roffset = 0;
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;
}
}
which = which - 1;
extent[0] = 1;
count[0] = 0;
n = 0;
for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
{
if (dim == which)
{
roffset = ret->dim[dim].stride * size;
if (roffset == 0)
roffset = size;
soffset = array->dim[dim].stride * size;
if (soffset == 0)
soffset = size;
len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
}
else
{
count[n] = 0;
extent[n] = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
rstride[n] = ret->dim[dim].stride * size;
sstride[n] = array->dim[dim].stride * size;
n++;
}
}
if (sstride[0] == 0)
sstride[0] = size;
if (rstride[0] == 0)
rstride[0] = size;
dim = GFC_DESCRIPTOR_RANK (array);
rstride0 = rstride[0];
sstride0 = sstride[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;
}
while (rptr)
{
if (shift > 0)
{
src = &sptr[shift * soffset];
dest = rptr;
}
else
{
src = sptr;
dest = &rptr[-shift * roffset];
}
for (n = 0; n < len; n++)
{
memcpy (dest, src, size);
dest += roffset;
src += soffset;
}
if (shift >= 0)
{
n = shift;
}
else
{
dest = rptr;
n = -shift;
}
if (pbound)
while (n--)
{
memcpy (dest, pbound, size);
dest += roffset;
}
else
while (n--)
{
memset (dest, filler, size);
dest += roffset;
}
rptr += rstride0;
sptr += sstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
count[n] = 0;
rptr -= rstride[n] * extent[n];
sptr -= sstride[n] * extent[n];
n++;
if (n >= dim - 1)
{
rptr = NULL;
break;
}
else
{
count[n]++;
rptr += rstride[n];
sptr += sstride[n];
}
}
}
}
#define DEFINE_EOSHIFT(N) \
extern void eoshift0_##N (gfc_array_char *, const gfc_array_char *, \
const GFC_INTEGER_##N *, const char *, \
const GFC_INTEGER_##N *); \
export_proto(eoshift0_##N); \
\
void \
eoshift0_##N (gfc_array_char *ret, const gfc_array_char *array, \
const GFC_INTEGER_##N *pshift, const char *pbound, \
const GFC_INTEGER_##N *pdim) \
{ \
eoshift0 (ret, array, *pshift, pbound, pdim ? *pdim : 1, \
GFC_DESCRIPTOR_SIZE (array), 0); \
} \
\
extern void eoshift0_##N##_char (gfc_array_char *, GFC_INTEGER_4, \
const gfc_array_char *, \
const GFC_INTEGER_##N *, const char *, \
const GFC_INTEGER_##N *, GFC_INTEGER_4, \
GFC_INTEGER_4); \
export_proto(eoshift0_##N##_char); \
\
void \
eoshift0_##N##_char (gfc_array_char *ret, \
GFC_INTEGER_4 ret_length __attribute__((unused)), \
const gfc_array_char *array, \
const GFC_INTEGER_##N *pshift, \
const char *pbound, \
const GFC_INTEGER_##N *pdim, \
GFC_INTEGER_4 array_length, \
GFC_INTEGER_4 bound_length __attribute__((unused))) \
{ \
eoshift0 (ret, array, *pshift, pbound, pdim ? *pdim : 1, \
array_length, ' '); \
}
DEFINE_EOSHIFT (1);
DEFINE_EOSHIFT (2);
DEFINE_EOSHIFT (4);
DEFINE_EOSHIFT (8);