mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-17 04:38:54 +08:00
64acfd9910
2005-11-27 Janne Blomqvist <jb@gcc.gnu.org> * m4/*: Add const restrict to function arguments. * generated/*.c: Regenerate. From-SVN: r107573
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/* Implementation of the DOT_PRODUCT intrinsic
|
|
Copyright 2002 Free Software Foundation, Inc.
|
|
Contributed by Paul Brook <paul@nowt.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 2 of the License, or (at your option) any later version.
|
|
|
|
In addition to the permissions in the GNU General Public License, the
|
|
Free Software Foundation gives you unlimited permission to link the
|
|
compiled version of this file into combinations with other programs,
|
|
and to distribute those combinations without any restriction coming
|
|
from the use of this file. (The General Public License restrictions
|
|
do apply in other respects; for example, they cover modification of
|
|
the file, and distribution when not linked into a combine
|
|
executable.)
|
|
|
|
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.
|
|
|
|
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., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
#include "config.h"
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
#include "libgfortran.h"
|
|
|
|
#if defined (HAVE_GFC_INTEGER_16)
|
|
|
|
typedef GFC_ARRAY_DESCRIPTOR(GFC_MAX_DIMENSIONS, char) char_array;
|
|
|
|
extern GFC_INTEGER_16 dot_product_i16 (gfc_array_i16 * const restrict a,
|
|
gfc_array_i16 * const restrict b);
|
|
export_proto(dot_product_i16);
|
|
|
|
/* Both parameters will already have been converted to the result type. */
|
|
GFC_INTEGER_16
|
|
dot_product_i16 (gfc_array_i16 * const restrict a, gfc_array_i16 * const restrict b)
|
|
{
|
|
const GFC_INTEGER_16 * restrict pa;
|
|
const GFC_INTEGER_16 * restrict pb;
|
|
GFC_INTEGER_16 res;
|
|
index_type count;
|
|
index_type astride;
|
|
index_type bstride;
|
|
|
|
assert (GFC_DESCRIPTOR_RANK (a) == 1
|
|
&& GFC_DESCRIPTOR_RANK (b) == 1);
|
|
|
|
if (a->dim[0].stride == 0)
|
|
a->dim[0].stride = 1;
|
|
if (b->dim[0].stride == 0)
|
|
b->dim[0].stride = 1;
|
|
|
|
astride = a->dim[0].stride;
|
|
bstride = b->dim[0].stride;
|
|
count = a->dim[0].ubound + 1 - a->dim[0].lbound;
|
|
res = 0;
|
|
pa = a->data;
|
|
pb = b->data;
|
|
|
|
while (count--)
|
|
{
|
|
res += *pa * *pb;
|
|
pa += astride;
|
|
pb += bstride;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
#endif
|