7f68c75fb3
gcc/fortran/
* iresolve.c (gfc_resolve_all, gfc_resolve_any, gfc_resolve_count,
gfc_resolve_cshift, gfc_resolve_dot_product, gfc_resolve_eoshift,
gfc_resolve_matmul, gfc_resolve_maxloc, gfc_resolve_maxval,
gfc_resolve_minloc, gfc_resolve_minval, gfc_resolve_pack,
gfc_resolve_product, gfc_resolve_reshape, gfc_resolve_shape,
gfc_resolve_spread, gfc_resolve_sum, gfc_resolve_transpose,
gfc_resolve_unpack: Use PREFIX.
libgfortran/
* intrinsics/cshift0.c, intrinsics/eoshift0.c, intrinsics/eoshift2.c,
intrinsics/pack_generic.c, intrinsics/reshape_generic.c,
intrinsics/spread_generic.c, intrinsics/transpose_generic.c,
intrinsics/unpack_generic.c, m4/cshift1.m4, m4/dotprod.m4,
m4/dotprodc.m4, m4/dotprodl.m4, m4/eoshift1.m4, m4/eoshift3.m4,
m4/iforeach.m4, m4/ifunction.m4, m4/matmul.m4, m4/matmull.m4,
m4/reshape.m4, m4/shape.m4, m4/transpose.m4: Use standard prefix
instead of "__".
* generated/*: Rebuild.
From-SVN: r92075
239 lines
6.1 KiB
C
239 lines
6.1 KiB
C
/* Implementation of the MAXLOC intrinsic
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Copyright 2002 Free Software Foundation, Inc.
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Contributed by Paul Brook <paul@nowt.org>
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This file is part of the GNU Fortran 95 runtime library (libgfor).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with libgfor; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "config.h"
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#include <stdlib.h>
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#include <assert.h>
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#include <float.h>
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#include <limits.h>
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#include "libgfortran.h"
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extern void maxloc0_4_i4 (gfc_array_i4 * retarray, gfc_array_i4 *array);
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export_proto(maxloc0_4_i4);
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void
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maxloc0_4_i4 (gfc_array_i4 * retarray, gfc_array_i4 *array)
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{
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type sstride[GFC_MAX_DIMENSIONS];
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index_type dstride;
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GFC_INTEGER_4 *base;
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GFC_INTEGER_4 *dest;
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index_type rank;
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index_type n;
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rank = GFC_DESCRIPTOR_RANK (array);
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assert (rank > 0);
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assert (GFC_DESCRIPTOR_RANK (retarray) == 1);
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assert (retarray->dim[0].ubound + 1 - retarray->dim[0].lbound == rank);
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if (array->dim[0].stride == 0)
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array->dim[0].stride = 1;
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if (retarray->dim[0].stride == 0)
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retarray->dim[0].stride = 1;
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dstride = retarray->dim[0].stride;
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dest = retarray->data;
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for (n = 0; n < rank; n++)
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{
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sstride[n] = array->dim[n].stride;
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extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
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count[n] = 0;
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if (extent[n] <= 0)
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{
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/* Set the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 0;
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return;
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}
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}
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base = array->data;
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/* Initialize the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 1;
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{
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GFC_INTEGER_4 maxval;
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maxval = -GFC_INTEGER_4_HUGE;
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while (base)
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{
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{
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/* Implementation start. */
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if (*base > maxval)
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{
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maxval = *base;
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for (n = 0; n < rank; n++)
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dest[n * dstride] = count[n] + 1;
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}
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/* Implementation end. */
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}
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/* Advance to the next element. */
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count[0]++;
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base += sstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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/* When we get to the end of a dimension, reset it and increment
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the next dimension. */
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count[n] = 0;
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/* We could precalculate these products, but this is a less
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frequently used path so proabably not worth it. */
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base -= sstride[n] * extent[n];
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n++;
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if (n == rank)
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{
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/* Break out of the loop. */
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base = NULL;
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break;
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}
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else
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{
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count[n]++;
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base += sstride[n];
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}
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}
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}
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}
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}
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extern void mmaxloc0_4_i4 (gfc_array_i4 *, gfc_array_i4 *, gfc_array_l4 *);
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export_proto(mmaxloc0_4_i4);
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void
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mmaxloc0_4_i4 (gfc_array_i4 * retarray, gfc_array_i4 *array,
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gfc_array_l4 * mask)
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{
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type sstride[GFC_MAX_DIMENSIONS];
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index_type mstride[GFC_MAX_DIMENSIONS];
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index_type dstride;
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GFC_INTEGER_4 *dest;
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GFC_INTEGER_4 *base;
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GFC_LOGICAL_4 *mbase;
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int rank;
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index_type n;
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rank = GFC_DESCRIPTOR_RANK (array);
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assert (rank > 0);
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assert (GFC_DESCRIPTOR_RANK (retarray) == 1);
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assert (retarray->dim[0].ubound + 1 - retarray->dim[0].lbound == rank);
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assert (GFC_DESCRIPTOR_RANK (mask) == rank);
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if (array->dim[0].stride == 0)
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array->dim[0].stride = 1;
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if (retarray->dim[0].stride == 0)
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retarray->dim[0].stride = 1;
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if (retarray->dim[0].stride == 0)
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retarray->dim[0].stride = 1;
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dstride = retarray->dim[0].stride;
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dest = retarray->data;
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for (n = 0; n < rank; n++)
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{
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sstride[n] = array->dim[n].stride;
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mstride[n] = mask->dim[n].stride;
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extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
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count[n] = 0;
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if (extent[n] <= 0)
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{
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/* Set the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 0;
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return;
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}
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}
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base = array->data;
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mbase = mask->data;
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if (GFC_DESCRIPTOR_SIZE (mask) != 4)
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{
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/* This allows the same loop to be used for all logical types. */
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assert (GFC_DESCRIPTOR_SIZE (mask) == 8);
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for (n = 0; n < rank; n++)
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mstride[n] <<= 1;
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mbase = (GFOR_POINTER_L8_TO_L4 (mbase));
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}
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/* Initialize the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 1;
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{
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GFC_INTEGER_4 maxval;
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maxval = -GFC_INTEGER_4_HUGE;
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while (base)
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{
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{
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/* Implementation start. */
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if (*mbase && *base > maxval)
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{
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maxval = *base;
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for (n = 0; n < rank; n++)
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dest[n * dstride] = count[n] + 1;
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}
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/* Implementation end. */
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}
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/* Advance to the next element. */
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count[0]++;
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base += sstride[0];
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mbase += mstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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/* When we get to the end of a dimension, reset it and increment
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the next dimension. */
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count[n] = 0;
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/* We could precalculate these products, but this is a less
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frequently used path so proabably not worth it. */
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base -= sstride[n] * extent[n];
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mbase -= mstride[n] * extent[n];
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n++;
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if (n == rank)
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{
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/* Break out of the loop. */
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base = NULL;
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break;
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}
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else
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{
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count[n]++;
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base += sstride[n];
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mbase += mstride[n];
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}
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}
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}
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}
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}
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