376 lines
9.3 KiB
C
376 lines
9.3 KiB
C
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/* Implementation of the FINDLOC intrinsic
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Copyright (C) 2018-2021 Free Software Foundation, Inc.
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Contributed by Thomas König <tk@tkoenig.net>
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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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 General Public
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License as published by the Free Software Foundation; either
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version 3 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 General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libgfortran.h"
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#include <assert.h>
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#if defined (HAVE_GFC_REAL_8)
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extern void findloc0_r8 (gfc_array_index_type * const restrict retarray,
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gfc_array_r8 * const restrict array, GFC_REAL_8 value,
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GFC_LOGICAL_4);
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export_proto(findloc0_r8);
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void
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findloc0_r8 (gfc_array_index_type * const restrict retarray,
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gfc_array_r8 * const restrict array, GFC_REAL_8 value,
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GFC_LOGICAL_4 back)
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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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const GFC_REAL_8 *base;
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index_type * restrict dest;
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index_type rank;
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index_type n;
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index_type sz;
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rank = GFC_DESCRIPTOR_RANK (array);
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if (rank <= 0)
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runtime_error ("Rank of array needs to be > 0");
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if (retarray->base_addr == NULL)
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{
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GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
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retarray->dtype.rank = 1;
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retarray->offset = 0;
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retarray->base_addr = xmallocarray (rank, sizeof (index_type));
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}
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else
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{
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if (unlikely (compile_options.bounds_check))
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bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
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"FINDLOC");
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}
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dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
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dest = retarray->base_addr;
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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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sz = 1;
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for (n = 0; n < rank; n++)
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{
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sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
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extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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sz *= extent[n];
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if (extent[n] <= 0)
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return;
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}
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for (n = 0; n < rank; n++)
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count[n] = 0;
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if (back)
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{
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base = array->base_addr + (sz - 1) * 1;
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while (1)
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{
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do
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{
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if (unlikely(*base == value))
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{
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for (n = 0; n < rank; n++)
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dest[n * dstride] = extent[n] - count[n];
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return;
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}
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base -= sstride[0] * 1;
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} while(++count[0] != extent[0]);
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n = 0;
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do
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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 probably not worth it. */
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base += sstride[n] * extent[n] * 1;
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n++;
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if (n >= rank)
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return;
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else
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{
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count[n]++;
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base -= sstride[n] * 1;
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}
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} while (count[n] == extent[n]);
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}
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}
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else
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{
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base = array->base_addr;
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while (1)
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{
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do
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{
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if (unlikely(*base == value))
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{
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for (n = 0; n < rank; n++)
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dest[n * dstride] = count[n] + 1;
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return;
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}
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base += sstride[0] * 1;
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} while(++count[0] != extent[0]);
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n = 0;
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do
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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 probably not worth it. */
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base -= sstride[n] * extent[n] * 1;
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n++;
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if (n >= rank)
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return;
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else
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{
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count[n]++;
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base += sstride[n] * 1;
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}
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} while (count[n] == extent[n]);
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}
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}
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return;
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}
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extern void mfindloc0_r8 (gfc_array_index_type * const restrict retarray,
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gfc_array_r8 * const restrict array, GFC_REAL_8 value,
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gfc_array_l1 *const restrict, GFC_LOGICAL_4);
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export_proto(mfindloc0_r8);
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void
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mfindloc0_r8 (gfc_array_index_type * const restrict retarray,
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gfc_array_r8 * const restrict array, GFC_REAL_8 value,
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gfc_array_l1 *const restrict mask, GFC_LOGICAL_4 back)
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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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const GFC_REAL_8 *base;
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index_type * restrict dest;
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GFC_LOGICAL_1 *mbase;
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index_type rank;
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index_type n;
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int mask_kind;
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index_type sz;
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rank = GFC_DESCRIPTOR_RANK (array);
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if (rank <= 0)
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runtime_error ("Rank of array needs to be > 0");
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if (retarray->base_addr == NULL)
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{
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GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
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retarray->dtype.rank = 1;
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retarray->offset = 0;
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retarray->base_addr = xmallocarray (rank, sizeof (index_type));
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}
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else
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{
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if (unlikely (compile_options.bounds_check))
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{
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bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
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"FINDLOC");
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bounds_equal_extents ((array_t *) mask, (array_t *) array,
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"MASK argument", "FINDLOC");
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}
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}
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mask_kind = GFC_DESCRIPTOR_SIZE (mask);
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mbase = mask->base_addr;
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if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
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#ifdef HAVE_GFC_LOGICAL_16
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|| mask_kind == 16
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#endif
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)
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mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
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else
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internal_error (NULL, "Funny sized logical array");
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dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
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dest = retarray->base_addr;
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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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sz = 1;
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for (n = 0; n < rank; n++)
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{
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sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
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mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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sz *= extent[n];
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if (extent[n] <= 0)
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return;
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}
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for (n = 0; n < rank; n++)
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count[n] = 0;
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if (back)
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{
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base = array->base_addr + (sz - 1) * 1;
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mbase = mbase + (sz - 1) * mask_kind;
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while (1)
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{
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do
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{
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if (unlikely(*mbase && *base == value))
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{
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for (n = 0; n < rank; n++)
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dest[n * dstride] = extent[n] - count[n];
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return;
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}
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base -= sstride[0] * 1;
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mbase -= mstride[0];
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} while(++count[0] != extent[0]);
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n = 0;
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do
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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 probably not worth it. */
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base += sstride[n] * extent[n] * 1;
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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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return;
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else
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{
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count[n]++;
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base -= sstride[n] * 1;
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mbase += mstride[n];
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}
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} while (count[n] == extent[n]);
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}
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}
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else
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{
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base = array->base_addr;
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while (1)
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{
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do
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{
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if (unlikely(*mbase && *base == value))
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{
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for (n = 0; n < rank; n++)
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dest[n * dstride] = count[n] + 1;
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return;
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}
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base += sstride[0] * 1;
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mbase += mstride[0];
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} while(++count[0] != extent[0]);
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n = 0;
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do
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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 probably not worth it. */
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base -= sstride[n] * extent[n] * 1;
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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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return;
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else
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{
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count[n]++;
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base += sstride[n]* 1;
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mbase += mstride[n];
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}
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} while (count[n] == extent[n]);
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}
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}
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return;
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}
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extern void sfindloc0_r8 (gfc_array_index_type * const restrict retarray,
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gfc_array_r8 * const restrict array, GFC_REAL_8 value,
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GFC_LOGICAL_4 *, GFC_LOGICAL_4);
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export_proto(sfindloc0_r8);
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void
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sfindloc0_r8 (gfc_array_index_type * const restrict retarray,
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gfc_array_r8 * const restrict array, GFC_REAL_8 value,
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GFC_LOGICAL_4 * mask, GFC_LOGICAL_4 back)
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{
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index_type rank;
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index_type dstride;
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index_type * restrict dest;
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index_type n;
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if (mask == NULL || *mask)
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{
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findloc0_r8 (retarray, array, value, back);
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return;
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}
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rank = GFC_DESCRIPTOR_RANK (array);
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if (rank <= 0)
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internal_error (NULL, "Rank of array needs to be > 0");
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if (retarray->base_addr == NULL)
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{
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GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
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retarray->dtype.rank = 1;
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retarray->offset = 0;
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retarray->base_addr = xmallocarray (rank, sizeof (index_type));
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}
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else if (unlikely (compile_options.bounds_check))
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{
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bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
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"FINDLOC");
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}
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dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
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dest = retarray->base_addr;
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for (n = 0; n<rank; n++)
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dest[n * dstride] = 0 ;
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}
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#endif
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