void
pack_c16 (gfc_array_c16 *ret, const gfc_array_c16 *array,
const gfc_array_l1 *mask, const gfc_array_c16 *vector)
{
/* r.* indicates the return array. */
index_type rstride0;
GFC_COMPLEX_16 * restrict rptr;
/* s.* indicates the source array. */
index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
const GFC_COMPLEX_16 *sptr;
/* m.* indicates the mask array. */
index_type mstride[GFC_MAX_DIMENSIONS];
index_type mstride0;
const GFC_LOGICAL_1 *mptr;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
int zero_sized;
index_type n;
index_type dim;
index_type nelem;
index_type total;
int mask_kind;
dim = GFC_DESCRIPTOR_RANK (array);
mptr = mask->base_addr;
/* Use the same loop for all logical types, by using GFC_LOGICAL_1
and using shifting to address size and endian issues. */
mask_kind = GFC_DESCRIPTOR_SIZE (mask);
if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
#ifdef HAVE_GFC_LOGICAL_16
|| mask_kind == 16
#endif
)
{
/* Do not convert a NULL pointer as we use test for NULL below. */
if (mptr)
mptr = GFOR_POINTER_TO_L1 (mptr, mask_kind);
}
else
runtime_error ("Funny sized logical array");
zero_sized = 0;
for (n = 0; n < dim; n++)
{
count[n] = 0;
extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
if (extent[n] <= 0)
zero_sized = 1;
sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
}
if (sstride[0] == 0)
sstride[0] = 1;
if (mstride[0] == 0)
mstride[0] = mask_kind;
if (zero_sized)
sptr = NULL;
else
sptr = array->base_addr;
if (ret->base_addr == NULL || unlikely (compile_options.bounds_check))
{
/* Count the elements, either for allocating memory or
for bounds checking. */
if (vector != NULL)
{
/* The return array will have as many
elements as there are in VECTOR. */
total = GFC_DESCRIPTOR_EXTENT(vector,0);
if (total < 0)
{
total = 0;
vector = NULL;
}
}
else
{
/* We have to count the true elements in MASK. */
total = count_0 (mask);
}
if (ret->base_addr == NULL)
{
/* Setup the array descriptor. */
GFC_DIMENSION_SET(ret->dim[0], 0, total-1, 1);
ret->offset = 0;
/* xmallocarray allocates a single byte for zero size. */
ret->base_addr = xmallocarray (total, sizeof (GFC_COMPLEX_16));
if (total == 0)
return;
}
else
{
/* We come here because of range checking. */
index_type ret_extent;
ret_extent = GFC_DESCRIPTOR_EXTENT(ret,0);
if (total != ret_extent)
runtime_error ("Incorrect extent in return value of PACK intrinsic;"
" is %ld, should be %ld", (long int) total,
(long int) ret_extent);
}
}
rstride0 = GFC_DESCRIPTOR_STRIDE(ret,0);
if (rstride0 == 0)
rstride0 = 1;
sstride0 = sstride[0];
mstride0 = mstride[0];
rptr = ret->base_addr;
while (sptr && mptr)
{
/* Test this element. */
if (*mptr)
{
/* Add it. */
*rptr = *sptr;
rptr += rstride0;
}
/* Advance to the next element. */
sptr += sstride0;
mptr += mstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
sptr -= sstride[n] * extent[n];
mptr -= mstride[n] * extent[n];
n++;
if (n >= dim)
{
/* Break out of the loop. */
sptr = NULL;
break;
}
else
{
count[n]++;
sptr += sstride[n];
mptr += mstride[n];
}
}
}
/* Add any remaining elements from VECTOR. */
if (vector)
{
n = GFC_DESCRIPTOR_EXTENT(vector,0);
nelem = ((rptr - ret->base_addr) / rstride0);
if (n > nelem)
{
sstride0 = GFC_DESCRIPTOR_STRIDE(vector,0);
if (sstride0 == 0)
sstride0 = 1;
sptr = vector->base_addr + sstride0 * nelem;
n -= nelem;
while (n--)
{
*rptr = *sptr;
rptr += rstride0;
sptr += sstride0;
}
}
}
}
void
internal_unpack_r8 (gfc_array_r8 * d, const GFC_REAL_8 * src)
{
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type stride[GFC_MAX_DIMENSIONS];
index_type stride0;
index_type dim;
index_type dsize;
GFC_REAL_8 * restrict dest;
int n;
dest = d->base_addr;
if (src == dest || !src)
return;
dim = GFC_DESCRIPTOR_RANK (d);
dsize = 1;
for (n = 0; n < dim; n++)
{
count[n] = 0;
stride[n] = GFC_DESCRIPTOR_STRIDE(d,n);
extent[n] = GFC_DESCRIPTOR_EXTENT(d,n);
if (extent[n] <= 0)
return;
if (dsize == stride[n])
dsize *= extent[n];
else
dsize = 0;
}
if (dsize != 0)
{
memcpy (dest, src, dsize * sizeof (GFC_REAL_8));
return;
}
stride0 = stride[0];
while (dest)
{
/* Copy the data. */
*dest = *(src++);
/* Advance to the next element. */
dest += stride0;
count[0]++;
/* Advance to the next source element. */
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
dest -= stride[n] * extent[n];
n++;
if (n == dim)
{
dest = NULL;
break;
}
else
{
count[n]++;
dest += stride[n];
}
}
}
}
GFC_REAL_16 *
internal_pack_r16 (gfc_array_r16 * source)
{
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type stride[GFC_MAX_DIMENSIONS];
index_type stride0;
index_type dim;
index_type ssize;
const GFC_REAL_16 *src;
GFC_REAL_16 * restrict dest;
GFC_REAL_16 *destptr;
int n;
int packed;
/* TODO: Investigate how we can figure out if this is a temporary
since the stride=0 thing has been removed from the frontend. */
dim = GFC_DESCRIPTOR_RANK (source);
ssize = 1;
packed = 1;
for (n = 0; n < dim; n++)
{
count[n] = 0;
stride[n] = GFC_DESCRIPTOR_STRIDE(source,n);
extent[n] = GFC_DESCRIPTOR_EXTENT(source,n);
if (extent[n] <= 0)
{
/* Do nothing. */
packed = 1;
break;
}
if (ssize != stride[n])
packed = 0;
ssize *= extent[n];
}
if (packed)
return source->base_addr;
/* Allocate storage for the destination. */
destptr = xmallocarray (ssize, sizeof (GFC_REAL_16));
dest = destptr;
src = source->base_addr;
stride0 = stride[0];
while (src)
{
/* Copy the data. */
*(dest++) = *src;
/* Advance to the next element. */
src += stride0;
count[0]++;
/* Advance to the next source element. */
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
src -= stride[n] * extent[n];
n++;
if (n == dim)
{
src = NULL;
break;
}
else
{
count[n]++;
src += stride[n];
}
}
}
return destptr;
}
void
pack_i8 (gfc_array_i8 *ret, const gfc_array_i8 *array,
const gfc_array_l1 *mask, const gfc_array_i8 *vector)
{
/* r.* indicates the return array. */
index_type rstride0;
GFC_INTEGER_8 * restrict rptr;
/* s.* indicates the source array. */
index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
const GFC_INTEGER_8 *sptr;
/* m.* indicates the mask array. */
index_type mstride[GFC_MAX_DIMENSIONS];
index_type mstride0;
const GFC_LOGICAL_1 *mptr;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
int zero_sized;
index_type n;
index_type dim;
index_type nelem;
index_type total;
int mask_kind;
dim = GFC_DESCRIPTOR_RANK (array);
mptr = mask->data;
/* Use the same loop for all logical types, by using GFC_LOGICAL_1
and using shifting to address size and endian issues. */
mask_kind = GFC_DESCRIPTOR_SIZE (mask);
if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
#ifdef HAVE_GFC_LOGICAL_16
|| mask_kind == 16
#endif
)
{
/* Do not convert a NULL pointer as we use test for NULL below. */
if (mptr)
mptr = GFOR_POINTER_TO_L1 (mptr, mask_kind);
}
else
runtime_error ("Funny sized logical array");
zero_sized = 0;
for (n = 0; n < dim; n++)
{
count[n] = 0;
extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
if (extent[n] <= 0)
zero_sized = 1;
sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
}
if (sstride[0] == 0)
sstride[0] = 1;
if (mstride[0] == 0)
mstride[0] = mask_kind;
if (zero_sized)
sptr = NULL;
else
sptr = array->data;
if (ret->data == NULL || compile_options.bounds_check)
{
/* Count the elements, either for allocating memory or
for bounds checking. */
if (vector != NULL)
{
/* The return array will have as many
elements as there are in VECTOR. */
total = GFC_DESCRIPTOR_EXTENT(vector,0);
if (total < 0)
{
total = 0;
vector = NULL;
}
}
else
{
/* We have to count the true elements in MASK. */
/* TODO: We could speed up pack easily in the case of only
few .TRUE. entries in MASK, by keeping track of where we
would be in the source array during the initial traversal
of MASK, and caching the pointers to those elements. Then,
supposed the number of elements is small enough, we would
only have to traverse the list, and copy those elements
into the result array. In the case of datatypes which fit
in one of the integer types we could also cache the
value instead of a pointer to it.
This approach might be bad from the point of view of
cache behavior in the case where our cache is not big
enough to hold all elements that have to be copied. */
const GFC_LOGICAL_1 *m = mptr;
total = 0;
if (zero_sized)
m = NULL;
while (m)
{
/* Test this element. */
if (*m)
total++;
/* Advance to the next element. */
m += mstride[0];
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it
and increment the next dimension. */
count[n] = 0;
/* We could precalculate this product, but this is a
less frequently used path so probably not worth
it. */
m -= mstride[n] * extent[n];
n++;
if (n >= dim)
{
/* Break out of the loop. */
m = NULL;
break;
}
else
{
count[n]++;
m += mstride[n];
}
}
}
}
if (ret->data == NULL)
{
/* Setup the array descriptor. */
GFC_DIMENSION_SET(ret->dim[0], 0, total-1, 1);
ret->offset = 0;
if (total == 0)
{
/* In this case, nothing remains to be done. */
ret->data = internal_malloc_size (1);
return;
}
else
ret->data = internal_malloc_size (sizeof (GFC_INTEGER_8) * total);
}
else
{
/* We come here because of range checking. */
index_type ret_extent;
ret_extent = GFC_DESCRIPTOR_EXTENT(ret,0);
if (total != ret_extent)
runtime_error ("Incorrect extent in return value of PACK intrinsic;"
" is %ld, should be %ld", (long int) total,
(long int) ret_extent);
}
}
rstride0 = GFC_DESCRIPTOR_STRIDE(ret,0);
if (rstride0 == 0)
rstride0 = 1;
sstride0 = sstride[0];
mstride0 = mstride[0];
rptr = ret->data;
while (sptr && mptr)
{
/* Test this element. */
if (*mptr)
{
/* Add it. */
*rptr = *sptr;
rptr += rstride0;
}
/* Advance to the next element. */
sptr += sstride0;
mptr += mstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
sptr -= sstride[n] * extent[n];
mptr -= mstride[n] * extent[n];
n++;
if (n >= dim)
{
/* Break out of the loop. */
sptr = NULL;
break;
}
else
{
count[n]++;
sptr += sstride[n];
mptr += mstride[n];
}
}
}
/* Add any remaining elements from VECTOR. */
if (vector)
{
n = GFC_DESCRIPTOR_EXTENT(vector,0);
nelem = ((rptr - ret->data) / rstride0);
if (n > nelem)
{
sstride0 = GFC_DESCRIPTOR_STRIDE(vector,0);
if (sstride0 == 0)
sstride0 = 1;
sptr = vector->data + sstride0 * nelem;
n -= nelem;
while (n--)
{
*rptr = *sptr;
rptr += rstride0;
sptr += sstride0;
}
}
}
}
void
date_and_time (char *__date, char *__time, char *__zone,
gfc_array_i4 *__values, GFC_INTEGER_4 __date_len,
GFC_INTEGER_4 __time_len, GFC_INTEGER_4 __zone_len)
{
int i;
char date[DATE_LEN + 1];
char timec[TIME_LEN + 1];
char zone[ZONE_LEN + 1];
GFC_INTEGER_4 values[VALUES_SIZE];
time_t lt;
struct tm local_time;
struct tm UTC_time;
long usecs;
if (!gf_gettime (<, &usecs))
{
values[7] = usecs / 1000;
localtime_r (<, &local_time);
gmtime_r (<, &UTC_time);
/* All arguments can be derived from VALUES. */
values[0] = 1900 + local_time.tm_year;
values[1] = 1 + local_time.tm_mon;
values[2] = local_time.tm_mday;
values[3] = (local_time.tm_min - UTC_time.tm_min +
60 * (local_time.tm_hour - UTC_time.tm_hour +
24 * (local_time.tm_yday - UTC_time.tm_yday)));
values[4] = local_time.tm_hour;
values[5] = local_time.tm_min;
values[6] = local_time.tm_sec;
if (__date)
snprintf (date, DATE_LEN + 1, "%04d%02d%02d",
values[0], values[1], values[2]);
if (__time)
snprintf (timec, TIME_LEN + 1, "%02d%02d%02d.%03d",
values[4], values[5], values[6], values[7]);
if (__zone)
snprintf (zone, ZONE_LEN + 1, "%+03d%02d",
values[3] / 60, abs (values[3] % 60));
}
else
{
memset (date, ' ', DATE_LEN);
date[DATE_LEN] = '\0';
memset (timec, ' ', TIME_LEN);
timec[TIME_LEN] = '\0';
memset (zone, ' ', ZONE_LEN);
zone[ZONE_LEN] = '\0';
for (i = 0; i < VALUES_SIZE; i++)
values[i] = - GFC_INTEGER_4_HUGE;
}
/* Copy the values into the arguments. */
if (__values)
{
index_type len, delta, elt_size;
elt_size = GFC_DESCRIPTOR_SIZE (__values);
len = GFC_DESCRIPTOR_EXTENT(__values,0);
delta = GFC_DESCRIPTOR_STRIDE(__values,0);
if (delta == 0)
delta = 1;
if (unlikely (len < VALUES_SIZE))
runtime_error ("Incorrect extent in VALUE argument to"
" DATE_AND_TIME intrinsic: is %ld, should"
" be >=%ld", (long int) len, (long int) VALUES_SIZE);
/* Cope with different type kinds. */
if (elt_size == 4)
{
GFC_INTEGER_4 *vptr4 = __values->data;
for (i = 0; i < VALUES_SIZE; i++, vptr4 += delta)
*vptr4 = values[i];
}
else if (elt_size == 8)
{
GFC_INTEGER_8 *vptr8 = (GFC_INTEGER_8 *)__values->data;
for (i = 0; i < VALUES_SIZE; i++, vptr8 += delta)
{
if (values[i] == - GFC_INTEGER_4_HUGE)
*vptr8 = - GFC_INTEGER_8_HUGE;
else
*vptr8 = values[i];
}
}
else
abort ();
}
if (__zone)
fstrcpy (__zone, __zone_len, zone, ZONE_LEN);
if (__time)
fstrcpy (__time, __time_len, timec, TIME_LEN);
if (__date)
fstrcpy (__date, __date_len, date, DATE_LEN);
}
void
unpack0_r4 (gfc_array_r4 *ret, const gfc_array_r4 *vector,
const gfc_array_l1 *mask, const GFC_REAL_4 *fptr)
{
/* r.* indicates the return array. */
index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type rs;
GFC_REAL_4 * restrict rptr;
/* v.* indicates the vector array. */
index_type vstride0;
GFC_REAL_4 *vptr;
/* Value for field, this is constant. */
const GFC_REAL_4 fval = *fptr;
/* m.* indicates the mask array. */
index_type mstride[GFC_MAX_DIMENSIONS];
index_type mstride0;
const GFC_LOGICAL_1 *mptr;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type n;
index_type dim;
int empty;
int mask_kind;
empty = 0;
mptr = mask->base_addr;
/* Use the same loop for all logical types, by using GFC_LOGICAL_1
and using shifting to address size and endian issues. */
mask_kind = GFC_DESCRIPTOR_SIZE (mask);
if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
#ifdef HAVE_GFC_LOGICAL_16
|| mask_kind == 16
#endif
)
{
/* Do not convert a NULL pointer as we use test for NULL below. */
if (mptr)
mptr = GFOR_POINTER_TO_L1 (mptr, mask_kind);
}
else
runtime_error ("Funny sized logical array");
if (ret->base_addr == NULL)
{
/* The front end has signalled that we need to populate the
return array descriptor. */
dim = GFC_DESCRIPTOR_RANK (mask);
rs = 1;
for (n = 0; n < dim; n++)
{
count[n] = 0;
GFC_DIMENSION_SET(ret->dim[n], 0,
GFC_DESCRIPTOR_EXTENT(mask,n) - 1, rs);
extent[n] = GFC_DESCRIPTOR_EXTENT(ret,n);
empty = empty || extent[n] <= 0;
rstride[n] = GFC_DESCRIPTOR_STRIDE(ret,n);
mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
rs *= extent[n];
}
ret->offset = 0;
ret->base_addr = xmallocarray (rs, sizeof (GFC_REAL_4));
}
else
{
dim = GFC_DESCRIPTOR_RANK (ret);
for (n = 0; n < dim; n++)
{
count[n] = 0;
extent[n] = GFC_DESCRIPTOR_EXTENT(ret,n);
empty = empty || extent[n] <= 0;
rstride[n] = GFC_DESCRIPTOR_STRIDE(ret,n);
mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
}
if (rstride[0] == 0)
rstride[0] = 1;
}
if (empty)
return;
if (mstride[0] == 0)
mstride[0] = 1;
vstride0 = GFC_DESCRIPTOR_STRIDE(vector,0);
if (vstride0 == 0)
vstride0 = 1;
rstride0 = rstride[0];
mstride0 = mstride[0];
rptr = ret->base_addr;
vptr = vector->base_addr;
while (rptr)
{
if (*mptr)
{
/* From vector. */
*rptr = *vptr;
vptr += vstride0;
}
else
{
/* From field. */
*rptr = fval;
}
/* Advance to the next element. */
rptr += rstride0;
mptr += mstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
rptr -= rstride[n] * extent[n];
mptr -= mstride[n] * extent[n];
n++;
if (n >= dim)
{
/* Break out of the loop. */
rptr = NULL;
break;
}
else
{
count[n]++;
rptr += rstride[n];
mptr += mstride[n];
}
}
}
}
#if defined (HAVE_JN)
extern void bessel_jn_r8 (gfc_array_r8 * const restrict ret, int n1,
int n2, GFC_REAL_8 x);
export_proto(bessel_jn_r8);
void
bessel_jn_r8 (gfc_array_r8 * const restrict ret, int n1, int n2, GFC_REAL_8 x)
{
int i;
index_type stride;
GFC_REAL_8 last1, last2, x2rev;
stride = GFC_DESCRIPTOR_STRIDE(ret,0);
if (ret->base_addr == NULL)
{
size_t size = n2 < n1 ? 0 : n2-n1+1;
GFC_DIMENSION_SET(ret->dim[0], 0, size-1, 1);
ret->base_addr = xmallocarray (size, sizeof (GFC_REAL_8));
ret->offset = 0;
}
if (unlikely (n2 < n1))
return;
if (unlikely (compile_options.bounds_check)
&& GFC_DESCRIPTOR_EXTENT(ret,0) != (n2-n1+1))
runtime_error("Incorrect extent in return value of BESSEL_JN "
void
internal_unpack (gfc_array_char * d, const void * s)
{
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type stride[GFC_MAX_DIMENSIONS];
index_type stride0;
index_type dim;
index_type dsize;
char *dest;
const char *src;
int n;
int size;
int type_size;
dest = d->base_addr;
/* This check may be redundant, but do it anyway. */
if (s == dest || !s)
return;
type_size = GFC_DTYPE_TYPE_SIZE (d);
switch (type_size)
{
case GFC_DTYPE_INTEGER_1:
case GFC_DTYPE_LOGICAL_1:
case GFC_DTYPE_DERIVED_1:
internal_unpack_1 ((gfc_array_i1 *) d, (const GFC_INTEGER_1 *) s);
return;
case GFC_DTYPE_INTEGER_2:
case GFC_DTYPE_LOGICAL_2:
internal_unpack_2 ((gfc_array_i2 *) d, (const GFC_INTEGER_2 *) s);
return;
case GFC_DTYPE_INTEGER_4:
case GFC_DTYPE_LOGICAL_4:
internal_unpack_4 ((gfc_array_i4 *) d, (const GFC_INTEGER_4 *) s);
return;
case GFC_DTYPE_INTEGER_8:
case GFC_DTYPE_LOGICAL_8:
internal_unpack_8 ((gfc_array_i8 *) d, (const GFC_INTEGER_8 *) s);
return;
#if defined (HAVE_GFC_INTEGER_16)
case GFC_DTYPE_INTEGER_16:
case GFC_DTYPE_LOGICAL_16:
internal_unpack_16 ((gfc_array_i16 *) d, (const GFC_INTEGER_16 *) s);
return;
#endif
case GFC_DTYPE_REAL_4:
internal_unpack_r4 ((gfc_array_r4 *) d, (const GFC_REAL_4 *) s);
return;
case GFC_DTYPE_REAL_8:
internal_unpack_r8 ((gfc_array_r8 *) d, (const GFC_REAL_8 *) s);
return;
/* FIXME: This here is a hack, which will have to be removed when
the array descriptor is reworked. Currently, we don't store the
kind value for the type, but only the size. Because on targets with
__float128, we have sizeof(logn double) == sizeof(__float128),
we cannot discriminate here and have to fall back to the generic
handling (which is suboptimal). */
#if !defined(GFC_REAL_16_IS_FLOAT128)
# if defined(HAVE_GFC_REAL_10)
case GFC_DTYPE_REAL_10:
internal_unpack_r10 ((gfc_array_r10 *) d, (const GFC_REAL_10 *) s);
return;
# endif
# if defined(HAVE_GFC_REAL_16)
case GFC_DTYPE_REAL_16:
internal_unpack_r16 ((gfc_array_r16 *) d, (const GFC_REAL_16 *) s);
return;
# endif
#endif
case GFC_DTYPE_COMPLEX_4:
internal_unpack_c4 ((gfc_array_c4 *)d, (const GFC_COMPLEX_4 *)s);
return;
case GFC_DTYPE_COMPLEX_8:
internal_unpack_c8 ((gfc_array_c8 *)d, (const GFC_COMPLEX_8 *)s);
return;
/* FIXME: This here is a hack, which will have to be removed when
the array descriptor is reworked. Currently, we don't store the
kind value for the type, but only the size. Because on targets with
__float128, we have sizeof(logn double) == sizeof(__float128),
we cannot discriminate here and have to fall back to the generic
handling (which is suboptimal). */
#if !defined(GFC_REAL_16_IS_FLOAT128)
# if defined(HAVE_GFC_COMPLEX_10)
case GFC_DTYPE_COMPLEX_10:
internal_unpack_c10 ((gfc_array_c10 *) d, (const GFC_COMPLEX_10 *) s);
return;
# endif
# if defined(HAVE_GFC_COMPLEX_16)
case GFC_DTYPE_COMPLEX_16:
internal_unpack_c16 ((gfc_array_c16 *) d, (const GFC_COMPLEX_16 *) s);
return;
# endif
#endif
case GFC_DTYPE_DERIVED_2:
if (GFC_UNALIGNED_2(d->base_addr) || GFC_UNALIGNED_2(s))
break;
else
{
internal_unpack_2 ((gfc_array_i2 *) d, (const GFC_INTEGER_2 *) s);
return;
}
case GFC_DTYPE_DERIVED_4:
if (GFC_UNALIGNED_4(d->base_addr) || GFC_UNALIGNED_4(s))
break;
else
{
internal_unpack_4 ((gfc_array_i4 *) d, (const GFC_INTEGER_4 *) s);
return;
}
case GFC_DTYPE_DERIVED_8:
if (GFC_UNALIGNED_8(d->base_addr) || GFC_UNALIGNED_8(s))
break;
else
{
internal_unpack_8 ((gfc_array_i8 *) d, (const GFC_INTEGER_8 *) s);
return;
}
#ifdef HAVE_GFC_INTEGER_16
case GFC_DTYPE_DERIVED_16:
if (GFC_UNALIGNED_16(d->base_addr) || GFC_UNALIGNED_16(s))
break;
else
{
internal_unpack_16 ((gfc_array_i16 *) d, (const GFC_INTEGER_16 *) s);
return;
}
#endif
default:
break;
}
size = GFC_DESCRIPTOR_SIZE (d);
dim = GFC_DESCRIPTOR_RANK (d);
dsize = 1;
for (n = 0; n < dim; n++)
{
count[n] = 0;
stride[n] = GFC_DESCRIPTOR_STRIDE(d,n);
extent[n] = GFC_DESCRIPTOR_EXTENT(d,n);
if (extent[n] <= 0)
return;
if (dsize == stride[n])
dsize *= extent[n];
else
dsize = 0;
}
src = s;
if (dsize != 0)
{
memcpy (dest, src, dsize * size);
return;
}
stride0 = stride[0] * size;
while (dest)
{
/* Copy the data. */
memcpy (dest, src, size);
/* Advance to the next element. */
src += size;
dest += stride0;
count[0]++;
/* Advance to the next source element. */
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
dest -= stride[n] * extent[n] * size;
n++;
if (n == dim)
{
dest = NULL;
break;
}
else
{
count[n]++;
dest += stride[n] * size;
}
}
}
}
void
spread_r4 (gfc_array_r4 *ret, const gfc_array_r4 *source,
const index_type along, const index_type pncopies)
{
/* r.* indicates the return array. */
index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type rdelta = 0;
index_type rrank;
index_type rs;
GFC_REAL_4 *rptr;
GFC_REAL_4 * restrict dest;
/* s.* indicates the source array. */
index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
index_type srank;
const GFC_REAL_4 *sptr;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type n;
index_type dim;
index_type ncopies;
srank = GFC_DESCRIPTOR_RANK(source);
rrank = srank + 1;
if (rrank > GFC_MAX_DIMENSIONS)
runtime_error ("return rank too large in spread()");
if (along > rrank)
runtime_error ("dim outside of rank in spread()");
ncopies = pncopies;
if (ret->base_addr == NULL)
{
size_t ub, stride;
/* The front end has signalled that we need to populate the
return array descriptor. */
ret->dtype = (source->dtype & ~GFC_DTYPE_RANK_MASK) | rrank;
dim = 0;
rs = 1;
for (n = 0; n < rrank; n++)
{
stride = rs;
if (n == along - 1)
{
ub = ncopies - 1;
rdelta = rs;
rs *= ncopies;
}
else
{
count[dim] = 0;
extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
sstride[dim] = GFC_DESCRIPTOR_STRIDE(source,dim);
rstride[dim] = rs;
ub = extent[dim] - 1;
rs *= extent[dim];
dim++;
}
GFC_DIMENSION_SET(ret->dim[n], 0, ub, stride);
}
ret->offset = 0;
/* xmallocarray allocates a single byte for zero size. */
ret->base_addr = xmallocarray (rs, sizeof(GFC_REAL_4));
if (rs <= 0)
return;
}
else
{
int zero_sized;
zero_sized = 0;
dim = 0;
if (GFC_DESCRIPTOR_RANK(ret) != rrank)
runtime_error ("rank mismatch in spread()");
if (unlikely (compile_options.bounds_check))
{
for (n = 0; n < rrank; n++)
{
index_type ret_extent;
ret_extent = GFC_DESCRIPTOR_EXTENT(ret,n);
if (n == along - 1)
{
rdelta = GFC_DESCRIPTOR_STRIDE(ret,n);
if (ret_extent != ncopies)
runtime_error("Incorrect extent in return value of SPREAD"
" intrinsic in dimension %ld: is %ld,"
" should be %ld", (long int) n+1,
(long int) ret_extent, (long int) ncopies);
}
else
{
count[dim] = 0;
extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
if (ret_extent != extent[dim])
runtime_error("Incorrect extent in return value of SPREAD"
" intrinsic in dimension %ld: is %ld,"
" should be %ld", (long int) n+1,
(long int) ret_extent,
(long int) extent[dim]);
if (extent[dim] <= 0)
zero_sized = 1;
sstride[dim] = GFC_DESCRIPTOR_STRIDE(source,dim);
rstride[dim] = GFC_DESCRIPTOR_STRIDE(ret,n);
dim++;
}
}
}
else
{
for (n = 0; n < rrank; n++)
{
if (n == along - 1)
{
rdelta = GFC_DESCRIPTOR_STRIDE(ret,n);
}
else
{
count[dim] = 0;
extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
if (extent[dim] <= 0)
zero_sized = 1;
sstride[dim] = GFC_DESCRIPTOR_STRIDE(source,dim);
rstride[dim] = GFC_DESCRIPTOR_STRIDE(ret,n);
dim++;
}
}
}
if (zero_sized)
return;
if (sstride[0] == 0)
sstride[0] = 1;
}
sstride0 = sstride[0];
rstride0 = rstride[0];
rptr = ret->base_addr;
sptr = source->base_addr;
while (sptr)
{
/* Spread this element. */
dest = rptr;
for (n = 0; n < ncopies; n++)
{
*dest = *sptr;
dest += rdelta;
}
/* Advance to the next element. */
sptr += sstride0;
rptr += rstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
sptr -= sstride[n] * extent[n];
rptr -= rstride[n] * extent[n];
n++;
if (n >= srank)
{
/* Break out of the loop. */
sptr = NULL;
break;
}
else
{
count[n]++;
sptr += sstride[n];
rptr += rstride[n];
}
}
}
}
static void
stat_i4_sub_0 (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
gfc_charlen_type name_len, int is_lstat __attribute__ ((unused)))
{
int val;
char *str;
struct stat sb;
/* If the rank of the array is not 1, abort. */
if (GFC_DESCRIPTOR_RANK (sarray) != 1)
runtime_error ("Array rank of SARRAY is not 1.");
/* If the array is too small, abort. */
if (GFC_DESCRIPTOR_EXTENT(sarray,0) < 13)
runtime_error ("Array size of SARRAY is too small.");
/* Trim trailing spaces from name. */
while (name_len > 0 && name[name_len - 1] == ' ')
name_len--;
/* Make a null terminated copy of the string. */
str = gfc_alloca (name_len + 1);
memcpy (str, name, name_len);
str[name_len] = '\0';
/* On platforms that don't provide lstat(), we use stat() instead. */
#ifdef HAVE_LSTAT
if (is_lstat)
val = lstat(str, &sb);
else
#endif
val = stat(str, &sb);
if (val == 0)
{
index_type stride = GFC_DESCRIPTOR_STRIDE(sarray,0);
/* Device ID */
sarray->base_addr[0 * stride] = sb.st_dev;
/* Inode number */
sarray->base_addr[1 * stride] = sb.st_ino;
/* File mode */
sarray->base_addr[2 * stride] = sb.st_mode;
/* Number of (hard) links */
sarray->base_addr[3 * stride] = sb.st_nlink;
/* Owner's uid */
sarray->base_addr[4 * stride] = sb.st_uid;
/* Owner's gid */
sarray->base_addr[5 * stride] = sb.st_gid;
/* ID of device containing directory entry for file (0 if not available) */
#if HAVE_STRUCT_STAT_ST_RDEV
sarray->base_addr[6 * stride] = sb.st_rdev;
#else
sarray->base_addr[6 * stride] = 0;
#endif
/* File size (bytes) */
sarray->base_addr[7 * stride] = sb.st_size;
/* Last access time */
sarray->base_addr[8 * stride] = sb.st_atime;
/* Last modification time */
sarray->base_addr[9 * stride] = sb.st_mtime;
/* Last file status change time */
sarray->base_addr[10 * stride] = sb.st_ctime;
/* Preferred I/O block size (-1 if not available) */
#if HAVE_STRUCT_STAT_ST_BLKSIZE
sarray->base_addr[11 * stride] = sb.st_blksize;
#else
sarray->base_addr[11 * stride] = -1;
#endif
/* Number of blocks allocated (-1 if not available) */
#if HAVE_STRUCT_STAT_ST_BLOCKS
sarray->base_addr[12 * stride] = sb.st_blocks;
#else
sarray->base_addr[12 * stride] = -1;
#endif
}
if (status != NULL)
*status = (val == 0) ? 0 : errno;
}
void
fstat_i8_sub (GFC_INTEGER_8 *unit, gfc_array_i8 *sarray, GFC_INTEGER_8 *status)
{
int val;
struct stat sb;
/* If the rank of the array is not 1, abort. */
if (GFC_DESCRIPTOR_RANK (sarray) != 1)
runtime_error ("Array rank of SARRAY is not 1.");
/* If the array is too small, abort. */
if (GFC_DESCRIPTOR_EXTENT(sarray,0) < 13)
runtime_error ("Array size of SARRAY is too small.");
/* Convert Fortran unit number to C file descriptor. */
val = unit_to_fd ((int) *unit);
if (val >= 0)
val = fstat(val, &sb);
if (val == 0)
{
index_type stride = GFC_DESCRIPTOR_STRIDE(sarray,0);
/* Device ID */
sarray->base_addr[0] = sb.st_dev;
/* Inode number */
sarray->base_addr[stride] = sb.st_ino;
/* File mode */
sarray->base_addr[2 * stride] = sb.st_mode;
/* Number of (hard) links */
sarray->base_addr[3 * stride] = sb.st_nlink;
/* Owner's uid */
sarray->base_addr[4 * stride] = sb.st_uid;
/* Owner's gid */
sarray->base_addr[5 * stride] = sb.st_gid;
/* ID of device containing directory entry for file (0 if not available) */
#if HAVE_STRUCT_STAT_ST_RDEV
sarray->base_addr[6 * stride] = sb.st_rdev;
#else
sarray->base_addr[6 * stride] = 0;
#endif
/* File size (bytes) */
sarray->base_addr[7 * stride] = sb.st_size;
/* Last access time */
sarray->base_addr[8 * stride] = sb.st_atime;
/* Last modification time */
sarray->base_addr[9 * stride] = sb.st_mtime;
/* Last file status change time */
sarray->base_addr[10 * stride] = sb.st_ctime;
/* Preferred I/O block size (-1 if not available) */
#if HAVE_STRUCT_STAT_ST_BLKSIZE
sarray->base_addr[11 * stride] = sb.st_blksize;
#else
sarray->base_addr[11 * stride] = -1;
#endif
/* Number of blocks allocated (-1 if not available) */
#if HAVE_STRUCT_STAT_ST_BLOCKS
sarray->base_addr[12 * stride] = sb.st_blocks;
#else
sarray->base_addr[12 * stride] = -1;
#endif
}
if (status != NULL)
*status = (val == 0) ? 0 : errno;
}
static void
cshift0 (gfc_array_char * ret, const gfc_array_char * array,
ssize_t shift, int which, index_type size)
{
/* r.* indicates the return array. */
index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type roffset;
char *rptr;
/* s.* indicates the source array. */
index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
index_type soffset;
const char *sptr;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type dim;
index_type len;
index_type n;
index_type arraysize;
index_type type_size;
if (which < 1 || which > GFC_DESCRIPTOR_RANK (array))
runtime_error ("Argument 'DIM' is out of range in call to 'CSHIFT'");
arraysize = size0 ((array_t *) array);
if (ret->data == NULL)
{
int i;
ret->offset = 0;
ret->dtype = array->dtype;
for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
{
index_type ub, str;
ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1;
if (i == 0)
str = 1;
else
str = GFC_DESCRIPTOR_EXTENT(ret,i-1) *
GFC_DESCRIPTOR_STRIDE(ret,i-1);
GFC_DIMENSION_SET(ret->dim[i], 0, ub, str);
}
if (arraysize > 0)
ret->data = internal_malloc_size (size * arraysize);
else
ret->data = internal_malloc_size (1);
}
else if (unlikely (compile_options.bounds_check))
{
bounds_equal_extents ((array_t *) ret, (array_t *) array,
"return value", "CSHIFT");
}
if (arraysize == 0)
return;
type_size = GFC_DTYPE_TYPE_SIZE (array);
switch(type_size)
{
case GFC_DTYPE_LOGICAL_1:
case GFC_DTYPE_INTEGER_1:
case GFC_DTYPE_DERIVED_1:
cshift0_i1 ((gfc_array_i1 *)ret, (gfc_array_i1 *) array, shift, which);
return;
case GFC_DTYPE_LOGICAL_2:
case GFC_DTYPE_INTEGER_2:
cshift0_i2 ((gfc_array_i2 *)ret, (gfc_array_i2 *) array, shift, which);
return;
case GFC_DTYPE_LOGICAL_4:
case GFC_DTYPE_INTEGER_4:
cshift0_i4 ((gfc_array_i4 *)ret, (gfc_array_i4 *) array, shift, which);
return;
case GFC_DTYPE_LOGICAL_8:
case GFC_DTYPE_INTEGER_8:
cshift0_i8 ((gfc_array_i8 *)ret, (gfc_array_i8 *) array, shift, which);
return;
#ifdef HAVE_GFC_INTEGER_16
case GFC_DTYPE_LOGICAL_16:
case GFC_DTYPE_INTEGER_16:
cshift0_i16 ((gfc_array_i16 *)ret, (gfc_array_i16 *) array, shift,
which);
return;
#endif
case GFC_DTYPE_REAL_4:
cshift0_r4 ((gfc_array_r4 *)ret, (gfc_array_r4 *) array, shift, which);
return;
case GFC_DTYPE_REAL_8:
cshift0_r8 ((gfc_array_r8 *)ret, (gfc_array_r8 *) array, shift, which);
return;
#ifdef HAVE_GFC_REAL_10
case GFC_DTYPE_REAL_10:
cshift0_r10 ((gfc_array_r10 *)ret, (gfc_array_r10 *) array, shift,
which);
return;
#endif
#ifdef HAVE_GFC_REAL_16
case GFC_DTYPE_REAL_16:
cshift0_r16 ((gfc_array_r16 *)ret, (gfc_array_r16 *) array, shift,
which);
return;
#endif
case GFC_DTYPE_COMPLEX_4:
cshift0_c4 ((gfc_array_c4 *)ret, (gfc_array_c4 *) array, shift, which);
return;
case GFC_DTYPE_COMPLEX_8:
cshift0_c8 ((gfc_array_c8 *)ret, (gfc_array_c8 *) array, shift, which);
return;
#ifdef HAVE_GFC_COMPLEX_10
case GFC_DTYPE_COMPLEX_10:
cshift0_c10 ((gfc_array_c10 *)ret, (gfc_array_c10 *) array, shift,
which);
return;
#endif
#ifdef HAVE_GFC_COMPLEX_16
case GFC_DTYPE_COMPLEX_16:
cshift0_c16 ((gfc_array_c16 *)ret, (gfc_array_c16 *) array, shift,
which);
return;
#endif
default:
break;
}
switch (size)
{
/* Let's check the actual alignment of the data pointers. If they
are suitably aligned, we can safely call the unpack functions. */
case sizeof (GFC_INTEGER_1):
cshift0_i1 ((gfc_array_i1 *) ret, (gfc_array_i1 *) array, shift,
which);
break;
case sizeof (GFC_INTEGER_2):
if (GFC_UNALIGNED_2(ret->data) || GFC_UNALIGNED_2(array->data))
break;
else
{
cshift0_i2 ((gfc_array_i2 *) ret, (gfc_array_i2 *) array, shift,
which);
return;
}
case sizeof (GFC_INTEGER_4):
if (GFC_UNALIGNED_4(ret->data) || GFC_UNALIGNED_4(array->data))
break;
else
{
cshift0_i4 ((gfc_array_i4 *)ret, (gfc_array_i4 *) array, shift,
which);
return;
}
case sizeof (GFC_INTEGER_8):
if (GFC_UNALIGNED_8(ret->data) || GFC_UNALIGNED_8(array->data))
{
/* Let's try to use the complex routines. First, a sanity
check that the sizes match; this should be optimized to
a no-op. */
if (sizeof(GFC_INTEGER_8) != sizeof(GFC_COMPLEX_4))
break;
if (GFC_UNALIGNED_C4(ret->data) || GFC_UNALIGNED_C4(array->data))
break;
cshift0_c4 ((gfc_array_c4 *) ret, (gfc_array_c4 *) array, shift,
which);
return;
}
else
{
cshift0_i8 ((gfc_array_i8 *)ret, (gfc_array_i8 *) array, shift,
which);
return;
}
#ifdef HAVE_GFC_INTEGER_16
case sizeof (GFC_INTEGER_16):
if (GFC_UNALIGNED_16(ret->data) || GFC_UNALIGNED_16(array->data))
{
/* Let's try to use the complex routines. First, a sanity
check that the sizes match; this should be optimized to
a no-op. */
if (sizeof(GFC_INTEGER_16) != sizeof(GFC_COMPLEX_8))
break;
if (GFC_UNALIGNED_C8(ret->data) || GFC_UNALIGNED_C8(array->data))
break;
cshift0_c8 ((gfc_array_c8 *) ret, (gfc_array_c8 *) array, shift,
which);
return;
}
else
{
cshift0_i16 ((gfc_array_i16 *) ret, (gfc_array_i16 *) array,
shift, which);
return;
}
#else
case sizeof (GFC_COMPLEX_8):
if (GFC_UNALIGNED_C8(ret->data) || GFC_UNALIGNED_C8(array->data))
break;
else
{
cshift0_c8 ((gfc_array_c8 *) ret, (gfc_array_c8 *) array, shift,
which);
return;
}
#endif
default:
break;
}
which = which - 1;
sstride[0] = 0;
rstride[0] = 0;
extent[0] = 1;
count[0] = 0;
n = 0;
/* Initialized for avoiding compiler warnings. */
roffset = size;
soffset = size;
len = 0;
for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
{
if (dim == which)
{
roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
if (roffset == 0)
roffset = size;
soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
if (soffset == 0)
soffset = size;
len = GFC_DESCRIPTOR_EXTENT(array,dim);
}
else
{
count[n] = 0;
extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim);
rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
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;
shift = len == 0 ? 0 : shift % (ssize_t)len;
if (shift < 0)
shift += len;
while (rptr)
{
/* Do the shift for this dimension. */
/* If elements are contiguous, perform the operation
in two block moves. */
if (soffset == size && roffset == size)
{
size_t len1 = shift * size;
size_t len2 = (len - shift) * size;
memcpy (rptr, sptr + len1, len2);
memcpy (rptr + len2, sptr, len1);
}
else
{
/* Otherwise, we'll have to perform the copy one element at
a time. */
char *dest = rptr;
const char *src = &sptr[shift * soffset];
for (n = 0; n < len - shift; n++)
{
memcpy (dest, src, size);
dest += roffset;
src += soffset;
}
for (src = sptr, n = 0; n < shift; n++)
{
memcpy (dest, src, size);
dest += roffset;
src += soffset;
}
}
/* Advance to the next section. */
rptr += rstride0;
sptr += sstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
rptr -= rstride[n] * extent[n];
sptr -= sstride[n] * extent[n];
n++;
if (n >= dim - 1)
{
/* Break out of the loop. */
rptr = NULL;
break;
}
else
{
count[n]++;
rptr += rstride[n];
sptr += sstride[n];
}
}
}
}
void
cshift0_r4 (gfc_array_r4 *ret, const gfc_array_r4 *array, ssize_t shift,
int which)
{
/* r.* indicates the return array. */
index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type roffset;
GFC_REAL_4 *rptr;
/* s.* indicates the source array. */
index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
index_type soffset;
const GFC_REAL_4 *sptr;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type dim;
index_type len;
index_type n;
which = which - 1;
sstride[0] = 0;
rstride[0] = 0;
extent[0] = 1;
count[0] = 0;
n = 0;
/* Initialized for avoiding compiler warnings. */
roffset = 1;
soffset = 1;
len = 0;
for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
{
if (dim == which)
{
roffset = GFC_DESCRIPTOR_STRIDE(ret,dim);
if (roffset == 0)
roffset = 1;
soffset = GFC_DESCRIPTOR_STRIDE(array,dim);
if (soffset == 0)
soffset = 1;
len = GFC_DESCRIPTOR_EXTENT(array,dim);
}
else
{
count[n] = 0;
extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim);
rstride[n] = GFC_DESCRIPTOR_STRIDE(ret,dim);
sstride[n] = GFC_DESCRIPTOR_STRIDE(array,dim);
n++;
}
}
if (sstride[0] == 0)
sstride[0] = 1;
if (rstride[0] == 0)
rstride[0] = 1;
dim = GFC_DESCRIPTOR_RANK (array);
rstride0 = rstride[0];
sstride0 = sstride[0];
rptr = ret->data;
sptr = array->data;
shift = len == 0 ? 0 : shift % (ssize_t)len;
if (shift < 0)
shift += len;
while (rptr)
{
/* Do the shift for this dimension. */
/* If elements are contiguous, perform the operation
in two block moves. */
if (soffset == 1 && roffset == 1)
{
size_t len1 = shift * sizeof (GFC_REAL_4);
size_t len2 = (len - shift) * sizeof (GFC_REAL_4);
memcpy (rptr, sptr + shift, len2);
memcpy (rptr + (len - shift), sptr, len1);
}
else
{
/* Otherwise, we will have to perform the copy one element at
a time. */
GFC_REAL_4 *dest = rptr;
const GFC_REAL_4 *src = &sptr[shift * soffset];
for (n = 0; n < len - shift; n++)
{
*dest = *src;
dest += roffset;
src += soffset;
}
for (src = sptr, n = 0; n < shift; n++)
{
*dest = *src;
dest += roffset;
src += soffset;
}
}
/* Advance to the next section. */
rptr += rstride0;
sptr += sstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
rptr -= rstride[n] * extent[n];
sptr -= sstride[n] * extent[n];
n++;
if (n >= dim - 1)
{
/* Break out of the loop. */
rptr = NULL;
break;
}
else
{
count[n]++;
rptr += rstride[n];
sptr += sstride[n];
}
}
}
return;
}
