aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.4.0/libgfortran/generated/cshift0_i16.c
diff options
context:
space:
mode:
authorJing Yu <jingyu@google.com>2009-11-05 15:11:04 -0800
committerJing Yu <jingyu@google.com>2009-11-05 15:11:04 -0800
commitdf62c1c110e8532b995b23540b7e3695729c0779 (patch)
treedbbd4cbdb50ac38011e058a2533ee4c3168b0205 /gcc-4.4.0/libgfortran/generated/cshift0_i16.c
parent8d401cf711539af5a2f78d12447341d774892618 (diff)
downloadtoolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.tar.gz
toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.tar.bz2
toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.zip
Check in gcc sources for prebuilt toolchains in Eclair.
Diffstat (limited to 'gcc-4.4.0/libgfortran/generated/cshift0_i16.c')
-rw-r--r--gcc-4.4.0/libgfortran/generated/cshift0_i16.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/gcc-4.4.0/libgfortran/generated/cshift0_i16.c b/gcc-4.4.0/libgfortran/generated/cshift0_i16.c
new file mode 100644
index 000000000..fa48d41b7
--- /dev/null
+++ b/gcc-4.4.0/libgfortran/generated/cshift0_i16.c
@@ -0,0 +1,171 @@
+/* Helper function for cshift functions.
+ Copyright 2008, 2009 Free Software Foundation, Inc.
+ Contributed by Thomas Koenig <tkoenig@gcc.gnu.org>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran 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 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 <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+
+#if defined (HAVE_GFC_INTEGER_16)
+
+void
+cshift0_i16 (gfc_array_i16 *ret, const gfc_array_i16 *array, ssize_t shift,
+ int which)
+{
+ /* r.* indicates the return array. */
+ index_type rstride[GFC_MAX_DIMENSIONS];
+ index_type rstride0;
+ index_type roffset;
+ GFC_INTEGER_16 *rptr;
+
+ /* s.* indicates the source array. */
+ index_type sstride[GFC_MAX_DIMENSIONS];
+ index_type sstride0;
+ index_type soffset;
+ const GFC_INTEGER_16 *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 = ret->dim[dim].stride;
+ if (roffset == 0)
+ roffset = 1;
+ soffset = array->dim[dim].stride;
+ if (soffset == 0)
+ soffset = 1;
+ 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;
+ sstride[n] = array->dim[dim].stride;
+ 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_INTEGER_16);
+ size_t len2 = (len - shift) * sizeof (GFC_INTEGER_16);
+ 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_INTEGER_16 *dest = rptr;
+ const GFC_INTEGER_16 *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;
+}
+
+#endif