`/* Implementation of the CSHIFT intrinsic
- Copyright 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2024 Free Software Foundation, Inc.
Contributed by Feng Wang <wf_cs@yahoo.com>
-This file is part of the GNU Fortran 95 runtime library (libgfortran).
+This file is part of the GNU Fortran runtime library (libgfortran).
Libgfortran is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
+modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
+version 3 of the License, or (at your option) any later version.
-Ligbfor is distributed in the hope that it will be useful,
+Ligbfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with libgfor; see the file COPYING.LIB. If not,
-write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-#include "config.h"
-#include <stdlib.h>
-#include <assert.h>
-#include <string.h>
-#include "libgfortran.h"'
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#include "libgfortran.h"
+#include <string.h>'
+
include(iparm.m4)dnl
-void __cshift1_`'atype_kind (const gfc_array_char * ret,
- const gfc_array_char * array,
- const atype * h, const atype_name * pwhich);
-export_proto_np(__cshift1_`'atype_kind);
+`#if defined (HAVE_'atype_name`)
-void
-__cshift1_`'atype_kind (const gfc_array_char * ret,
- const gfc_array_char * array,
- const atype * h, const atype_name * pwhich)
+static void
+cshift1 (gfc_array_char * const restrict ret,
+ const gfc_array_char * const restrict array,
+ const 'atype` * const restrict h,
+ const 'atype_name` * const restrict pwhich)
{
/* 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;
/* 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 atype_name *hptr;
+ const 'atype_name` *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;
- atype_name sh;
-
+ 'atype_name` sh;
+ index_type arraysize;
+ index_type size;
+ index_type type_size;
+
if (pwhich)
which = *pwhich - 1;
else
which = 0;
-
+
if (which < 0 || (which + 1) > GFC_DESCRIPTOR_RANK (array))
- runtime_error ("Argument 'DIM' is out of range in call to 'CSHIFT'");
+ runtime_error ("Argument ''`DIM''` is out of range in call to ''`CSHIFT''`");
+
+ size = GFC_DESCRIPTOR_SIZE(array);
+
+ arraysize = size0 ((array_t *)array);
+
+ if (ret->base_addr == NULL)
+ {
+ ret->base_addr = xmallocarray (arraysize, size);
+ ret->offset = 0;
+ GFC_DTYPE_COPY(ret,array);
+ for (index_type 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);
+ }
+ }
+ else if (unlikely (compile_options.bounds_check))
+ {
+ bounds_equal_extents ((array_t *) ret, (array_t *) array,
+ "return value", "CSHIFT");
+ }
+
+ if (unlikely (compile_options.bounds_check))
+ {
+ bounds_reduced_extents ((array_t *) h, (array_t *) array, which,
+ "SHIFT argument", "CSHIFT");
+ }
+
+ if (arraysize == 0)
+ return;
+
+ /* See if we should dispatch to a helper function. */
+
+ type_size = GFC_DTYPE_TYPE_SIZE (array);
+
+ switch (type_size)
+ {
+ case GFC_DTYPE_LOGICAL_1:
+ case GFC_DTYPE_INTEGER_1:
+ cshift1_'atype_kind`_i1 ((gfc_array_i1 *)ret, (gfc_array_i1 *) array,
+ h, pwhich);
+ return;
+
+ case GFC_DTYPE_LOGICAL_2:
+ case GFC_DTYPE_INTEGER_2:
+ cshift1_'atype_kind`_i2 ((gfc_array_i2 *)ret, (gfc_array_i2 *) array,
+ h, pwhich);
+ return;
+
+ case GFC_DTYPE_LOGICAL_4:
+ case GFC_DTYPE_INTEGER_4:
+ cshift1_'atype_kind`_i4 ((gfc_array_i4 *)ret, (gfc_array_i4 *) array,
+ h, pwhich);
+ return;
+
+ case GFC_DTYPE_LOGICAL_8:
+ case GFC_DTYPE_INTEGER_8:
+ cshift1_'atype_kind`_i8 ((gfc_array_i8 *)ret, (gfc_array_i8 *) array,
+ h, pwhich);
+ return;
+
+#if defined (HAVE_INTEGER_16)
+ case GFC_DTYPE_LOGICAL_16:
+ case GFC_DTYPE_INTEGER_16:
+ cshift1_'atype_kind`_i16 ((gfc_array_i16 *)ret, (gfc_array_i16 *) array,
+ h, pwhich);
+ return;
+#endif
- size = GFC_DESCRIPTOR_SIZE (ret);
+ case GFC_DTYPE_REAL_4:
+ cshift1_'atype_kind`_r4 ((gfc_array_r4 *)ret, (gfc_array_r4 *) array,
+ h, pwhich);
+ return;
+ case GFC_DTYPE_REAL_8:
+ cshift1_'atype_kind`_r8 ((gfc_array_r8 *)ret, (gfc_array_r8 *) array,
+ h, pwhich);
+ return;
+
+#if defined (HAVE_REAL_10)
+ case GFC_DTYPE_REAL_10:
+ cshift1_'atype_kind`_r10 ((gfc_array_r10 *)ret, (gfc_array_r10 *) array,
+ h, pwhich);
+ return;
+#endif
+
+#if defined (HAVE_REAL_16)
+ case GFC_DTYPE_REAL_16:
+ cshift1_'atype_kind`_r16 ((gfc_array_r16 *)ret, (gfc_array_r16 *) array,
+ h, pwhich);
+ return;
+#endif
+
+ case GFC_DTYPE_COMPLEX_4:
+ cshift1_'atype_kind`_c4 ((gfc_array_c4 *)ret, (gfc_array_c4 *) array,
+ h, pwhich);
+ return;
+
+ case GFC_DTYPE_COMPLEX_8:
+ cshift1_'atype_kind`_c8 ((gfc_array_c8 *)ret, (gfc_array_c8 *) array,
+ h, pwhich);
+ return;
+
+#if defined (HAVE_COMPLEX_10)
+ case GFC_DTYPE_COMPLEX_10:
+ cshift1_'atype_kind`_c10 ((gfc_array_c10 *)ret, (gfc_array_c10 *) array,
+ h, pwhich);
+ return;
+#endif
+
+#if defined (HAVE_COMPLEX_16)
+ case GFC_DTYPE_COMPLEX_16:
+ cshift1_'atype_kind`_c16 ((gfc_array_c16 *)ret, (gfc_array_c16 *) array,
+ h, pwhich);
+ return;
+#endif
+
+ default:
+ break;
+
+ }
+
extent[0] = 1;
count[0] = 0;
- size = GFC_DESCRIPTOR_SIZE (array);
n = 0;
/* Initialized for avoiding compiler warnings. */
{
if (dim == which)
{
- roffset = ret->dim[dim].stride * size;
+ roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
if (roffset == 0)
roffset = size;
- soffset = array->dim[dim].stride * size;
+ soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
if (soffset == 0)
soffset = size;
- len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
+ len = GFC_DESCRIPTOR_EXTENT(array,dim);
}
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;
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim);
+ rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
+ sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
- hstride[n] = h->dim[n].stride;
+ hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n);
n++;
}
}
rstride0 = rstride[0];
sstride0 = sstride[0];
hstride0 = hstride[0];
- rptr = ret->data;
- sptr = array->data;
- hptr = h->data;
+ rptr = ret->base_addr;
+ sptr = array->base_addr;
+ hptr = h->base_addr;
while (rptr)
{
/* Do the shift for this dimension. */
sh = *hptr;
- sh = (div (sh, len)).rem;
+ /* Normal case should be -len < sh < len; try to
+ avoid the expensive remainder operation if possible. */
if (sh < 0)
sh += len;
+ if (unlikely (sh >= len || sh < 0))
+ {
+ sh = sh % len;
+ if (sh < 0)
+ sh += len;
+ }
src = &sptr[sh * soffset];
dest = rptr;
-
- for (n = 0; n < len; n++)
+ if (soffset == size && roffset == size)
+ {
+ size_t len1 = sh * size;
+ size_t len2 = (len - sh) * size;
+ memcpy (rptr, sptr + len1, len2);
+ memcpy (rptr + len2, sptr, len1);
+ }
+ else
{
- memcpy (dest, src, size);
- dest += roffset;
- if (n == len - sh - 1)
- src = sptr;
- else
- src += soffset;
- }
+ for (n = 0; n < len - sh; n++)
+ {
+ memcpy (dest, src, size);
+ dest += roffset;
+ src += soffset;
+ }
+ for (src = sptr, n = 0; n < sh; n++)
+ {
+ memcpy (dest, src, size);
+ dest += roffset;
+ src += soffset;
+ }
+ }
/* 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 cshift1_'atype_kind` (gfc_array_char * const restrict,
+ const gfc_array_char * const restrict,
+ const 'atype` * const restrict,
+ const 'atype_name` * const restrict);
+export_proto(cshift1_'atype_kind`);
+
+void
+cshift1_'atype_kind` (gfc_array_char * const restrict ret,
+ const gfc_array_char * const restrict array,
+ const 'atype` * const restrict h,
+ const 'atype_name` * const restrict pwhich)
+{
+ cshift1 (ret, array, h, pwhich);
+}
+
+
+void cshift1_'atype_kind`_char (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4,
+ const gfc_array_char * const restrict array,
+ const 'atype` * const restrict h,
+ const 'atype_name` * const restrict pwhich,
+ GFC_INTEGER_4);
+export_proto(cshift1_'atype_kind`_char);
+
+void
+cshift1_'atype_kind`_char (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char * const restrict array,
+ const 'atype` * const restrict h,
+ const 'atype_name` * const restrict pwhich,
+ GFC_INTEGER_4 array_length __attribute__((unused)))
+{
+ cshift1 (ret, array, h, pwhich);
+}
+
+
+void cshift1_'atype_kind`_char4 (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4,
+ const gfc_array_char * const restrict array,
+ const 'atype` * const restrict h,
+ const 'atype_name` * const restrict pwhich,
+ GFC_INTEGER_4);
+export_proto(cshift1_'atype_kind`_char4);
+
+void
+cshift1_'atype_kind`_char4 (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char * const restrict array,
+ const 'atype` * const restrict h,
+ const 'atype_name` * const restrict pwhich,
+ GFC_INTEGER_4 array_length __attribute__((unused)))
+{
+ cshift1 (ret, array, h, pwhich);
+}
+
+#endif'
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