| |
| /* Implementation of the FINDLOC intrinsic |
| Copyright (C) 2018-2019 Free Software Foundation, Inc. |
| Contributed by Thomas König <tk@tkoenig.net> |
| |
| 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 <assert.h> |
| |
| #if defined (HAVE_GFC_REAL_8) |
| extern void findloc0_r8 (gfc_array_index_type * const restrict retarray, |
| gfc_array_r8 * const restrict array, GFC_REAL_8 value, |
| GFC_LOGICAL_4); |
| export_proto(findloc0_r8); |
| |
| void |
| findloc0_r8 (gfc_array_index_type * const restrict retarray, |
| gfc_array_r8 * const restrict array, GFC_REAL_8 value, |
| GFC_LOGICAL_4 back) |
| { |
| index_type count[GFC_MAX_DIMENSIONS]; |
| index_type extent[GFC_MAX_DIMENSIONS]; |
| index_type sstride[GFC_MAX_DIMENSIONS]; |
| index_type dstride; |
| const GFC_REAL_8 *base; |
| index_type * restrict dest; |
| index_type rank; |
| index_type n; |
| index_type sz; |
| |
| rank = GFC_DESCRIPTOR_RANK (array); |
| if (rank <= 0) |
| runtime_error ("Rank of array needs to be > 0"); |
| |
| if (retarray->base_addr == NULL) |
| { |
| GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1); |
| retarray->dtype.rank = 1; |
| retarray->offset = 0; |
| retarray->base_addr = xmallocarray (rank, sizeof (index_type)); |
| } |
| else |
| { |
| if (unlikely (compile_options.bounds_check)) |
| bounds_iforeach_return ((array_t *) retarray, (array_t *) array, |
| "FINDLOC"); |
| } |
| |
| dstride = GFC_DESCRIPTOR_STRIDE(retarray,0); |
| dest = retarray->base_addr; |
| |
| /* Set the return value. */ |
| for (n = 0; n < rank; n++) |
| dest[n * dstride] = 0; |
| |
| sz = 1; |
| for (n = 0; n < rank; n++) |
| { |
| sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n); |
| extent[n] = GFC_DESCRIPTOR_EXTENT(array,n); |
| sz *= extent[n]; |
| if (extent[n] <= 0) |
| return; |
| } |
| |
| for (n = 0; n < rank; n++) |
| count[n] = 0; |
| |
| if (back) |
| { |
| base = array->base_addr + (sz - 1) * 1; |
| |
| while (1) |
| { |
| do |
| { |
| if (unlikely(*base == value)) |
| { |
| for (n = 0; n < rank; n++) |
| dest[n * dstride] = extent[n] - count[n]; |
| |
| return; |
| } |
| base -= sstride[0] * 1; |
| } while(++count[0] != extent[0]); |
| |
| n = 0; |
| do |
| { |
| /* 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. */ |
| base += sstride[n] * extent[n] * 1; |
| n++; |
| if (n >= rank) |
| return; |
| else |
| { |
| count[n]++; |
| base -= sstride[n] * 1; |
| } |
| } while (count[n] == extent[n]); |
| } |
| } |
| else |
| { |
| base = array->base_addr; |
| while (1) |
| { |
| do |
| { |
| if (unlikely(*base == value)) |
| { |
| for (n = 0; n < rank; n++) |
| dest[n * dstride] = count[n] + 1; |
| |
| return; |
| } |
| base += sstride[0] * 1; |
| } while(++count[0] != extent[0]); |
| |
| n = 0; |
| do |
| { |
| /* 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. */ |
| base -= sstride[n] * extent[n] * 1; |
| n++; |
| if (n >= rank) |
| return; |
| else |
| { |
| count[n]++; |
| base += sstride[n] * 1; |
| } |
| } while (count[n] == extent[n]); |
| } |
| } |
| return; |
| } |
| |
| extern void mfindloc0_r8 (gfc_array_index_type * const restrict retarray, |
| gfc_array_r8 * const restrict array, GFC_REAL_8 value, |
| gfc_array_l1 *const restrict, GFC_LOGICAL_4); |
| export_proto(mfindloc0_r8); |
| |
| void |
| mfindloc0_r8 (gfc_array_index_type * const restrict retarray, |
| gfc_array_r8 * const restrict array, GFC_REAL_8 value, |
| gfc_array_l1 *const restrict mask, GFC_LOGICAL_4 back) |
| { |
| index_type count[GFC_MAX_DIMENSIONS]; |
| index_type extent[GFC_MAX_DIMENSIONS]; |
| index_type sstride[GFC_MAX_DIMENSIONS]; |
| index_type mstride[GFC_MAX_DIMENSIONS]; |
| index_type dstride; |
| const GFC_REAL_8 *base; |
| index_type * restrict dest; |
| GFC_LOGICAL_1 *mbase; |
| index_type rank; |
| index_type n; |
| int mask_kind; |
| index_type sz; |
| |
| rank = GFC_DESCRIPTOR_RANK (array); |
| if (rank <= 0) |
| runtime_error ("Rank of array needs to be > 0"); |
| |
| if (retarray->base_addr == NULL) |
| { |
| GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1); |
| retarray->dtype.rank = 1; |
| retarray->offset = 0; |
| retarray->base_addr = xmallocarray (rank, sizeof (index_type)); |
| } |
| else |
| { |
| if (unlikely (compile_options.bounds_check)) |
| { |
| bounds_iforeach_return ((array_t *) retarray, (array_t *) array, |
| "FINDLOC"); |
| bounds_equal_extents ((array_t *) mask, (array_t *) array, |
| "MASK argument", "FINDLOC"); |
| } |
| } |
| |
| mask_kind = GFC_DESCRIPTOR_SIZE (mask); |
| |
| mbase = mask->base_addr; |
| |
| if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8 |
| #ifdef HAVE_GFC_LOGICAL_16 |
| || mask_kind == 16 |
| #endif |
| ) |
| mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind); |
| else |
| internal_error (NULL, "Funny sized logical array"); |
| |
| dstride = GFC_DESCRIPTOR_STRIDE(retarray,0); |
| dest = retarray->base_addr; |
| |
| /* Set the return value. */ |
| for (n = 0; n < rank; n++) |
| dest[n * dstride] = 0; |
| |
| sz = 1; |
| for (n = 0; n < rank; n++) |
| { |
| sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n); |
| mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n); |
| extent[n] = GFC_DESCRIPTOR_EXTENT(array,n); |
| sz *= extent[n]; |
| if (extent[n] <= 0) |
| return; |
| } |
| |
| for (n = 0; n < rank; n++) |
| count[n] = 0; |
| |
| if (back) |
| { |
| base = array->base_addr + (sz - 1) * 1; |
| mbase = mbase + (sz - 1) * mask_kind; |
| while (1) |
| { |
| do |
| { |
| if (unlikely(*mbase && *base == value)) |
| { |
| for (n = 0; n < rank; n++) |
| dest[n * dstride] = extent[n] - count[n]; |
| |
| return; |
| } |
| base -= sstride[0] * 1; |
| mbase -= mstride[0]; |
| } while(++count[0] != extent[0]); |
| |
| n = 0; |
| do |
| { |
| /* 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. */ |
| base += sstride[n] * extent[n] * 1; |
| mbase -= mstride[n] * extent[n]; |
| n++; |
| if (n >= rank) |
| return; |
| else |
| { |
| count[n]++; |
| base -= sstride[n] * 1; |
| mbase += mstride[n]; |
| } |
| } while (count[n] == extent[n]); |
| } |
| } |
| else |
| { |
| base = array->base_addr; |
| while (1) |
| { |
| do |
| { |
| if (unlikely(*mbase && *base == value)) |
| { |
| for (n = 0; n < rank; n++) |
| dest[n * dstride] = count[n] + 1; |
| |
| return; |
| } |
| base += sstride[0] * 1; |
| mbase += mstride[0]; |
| } while(++count[0] != extent[0]); |
| |
| n = 0; |
| do |
| { |
| /* 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. */ |
| base -= sstride[n] * extent[n] * 1; |
| mbase -= mstride[n] * extent[n]; |
| n++; |
| if (n >= rank) |
| return; |
| else |
| { |
| count[n]++; |
| base += sstride[n]* 1; |
| mbase += mstride[n]; |
| } |
| } while (count[n] == extent[n]); |
| } |
| } |
| return; |
| } |
| |
| extern void sfindloc0_r8 (gfc_array_index_type * const restrict retarray, |
| gfc_array_r8 * const restrict array, GFC_REAL_8 value, |
| GFC_LOGICAL_4 *, GFC_LOGICAL_4); |
| export_proto(sfindloc0_r8); |
| |
| void |
| sfindloc0_r8 (gfc_array_index_type * const restrict retarray, |
| gfc_array_r8 * const restrict array, GFC_REAL_8 value, |
| GFC_LOGICAL_4 * mask, GFC_LOGICAL_4 back) |
| { |
| index_type rank; |
| index_type dstride; |
| index_type * restrict dest; |
| index_type n; |
| |
| if (mask == NULL || *mask) |
| { |
| findloc0_r8 (retarray, array, value, back); |
| return; |
| } |
| |
| rank = GFC_DESCRIPTOR_RANK (array); |
| |
| if (rank <= 0) |
| internal_error (NULL, "Rank of array needs to be > 0"); |
| |
| if (retarray->base_addr == NULL) |
| { |
| GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1); |
| retarray->dtype.rank = 1; |
| retarray->offset = 0; |
| retarray->base_addr = xmallocarray (rank, sizeof (index_type)); |
| } |
| else if (unlikely (compile_options.bounds_check)) |
| { |
| bounds_iforeach_return ((array_t *) retarray, (array_t *) array, |
| "FINDLOC"); |
| } |
| |
| dstride = GFC_DESCRIPTOR_STRIDE(retarray,0); |
| dest = retarray->base_addr; |
| for (n = 0; n<rank; n++) |
| dest[n * dstride] = 0 ; |
| } |
| |
| #endif |