/* Implementation of the MAXLOC intrinsic Copyright (C) 2017-2018 Free Software Foundation, Inc. Contributed by Thomas Koenig This file is part of the GNU Fortran 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 . */ #include "libgfortran.h" #if defined (HAVE_GFC_UINTEGER_1) && defined (HAVE_GFC_INTEGER_8) #define HAVE_BACK_ARG 1 #include #include static inline int compare_fcn (const GFC_UINTEGER_1 *a, const GFC_UINTEGER_1 *b, gfc_charlen_type n) { if (sizeof (GFC_UINTEGER_1) == 1) return memcmp (a, b, n); else return memcmp_char4 (a, b, n); } extern void maxloc1_8_s1 (gfc_array_i8 * const restrict, gfc_array_s1 * const restrict, const index_type * const restrict , GFC_LOGICAL_4 back, gfc_charlen_type); export_proto(maxloc1_8_s1); void maxloc1_8_s1 (gfc_array_i8 * const restrict retarray, gfc_array_s1 * const restrict array, const index_type * const restrict pdim, GFC_LOGICAL_4 back, gfc_charlen_type string_len) { index_type count[GFC_MAX_DIMENSIONS]; index_type extent[GFC_MAX_DIMENSIONS]; index_type sstride[GFC_MAX_DIMENSIONS]; index_type dstride[GFC_MAX_DIMENSIONS]; const GFC_UINTEGER_1 * restrict base; GFC_INTEGER_8 * restrict dest; index_type rank; index_type n; index_type len; index_type delta; index_type dim; int continue_loop; /* Make dim zero based to avoid confusion. */ rank = GFC_DESCRIPTOR_RANK (array) - 1; dim = (*pdim) - 1; if (unlikely (dim < 0 || dim > rank)) { runtime_error ("Dim argument incorrect in MAXLOC intrinsic: " "is %ld, should be between 1 and %ld", (long int) dim + 1, (long int) rank + 1); } len = GFC_DESCRIPTOR_EXTENT(array,dim); if (len < 0) len = 0; delta = GFC_DESCRIPTOR_STRIDE(array,dim) * string_len; for (n = 0; n < dim; n++) { sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n) * string_len; extent[n] = GFC_DESCRIPTOR_EXTENT(array,n); if (extent[n] < 0) extent[n] = 0; } for (n = dim; n < rank; n++) { sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1) * string_len; extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1); if (extent[n] < 0) extent[n] = 0; } if (retarray->base_addr == NULL) { size_t alloc_size, str; for (n = 0; n < rank; n++) { if (n == 0) str = 1; else str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1]; GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str); } retarray->offset = 0; retarray->dtype.rank = rank; alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1]; retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_8)); if (alloc_size == 0) { /* Make sure we have a zero-sized array. */ GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1); return; } } else { if (rank != GFC_DESCRIPTOR_RANK (retarray)) runtime_error ("rank of return array incorrect in" " MAXLOC intrinsic: is %ld, should be %ld", (long int) (GFC_DESCRIPTOR_RANK (retarray)), (long int) rank); if (unlikely (compile_options.bounds_check)) bounds_ifunction_return ((array_t *) retarray, extent, "return value", "MAXLOC"); } for (n = 0; n < rank; n++) { count[n] = 0; dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n); if (extent[n] <= 0) return; } base = array->base_addr; dest = retarray->base_addr; continue_loop = 1; while (continue_loop) { const GFC_UINTEGER_1 * restrict src; GFC_INTEGER_8 result; src = base; { const GFC_UINTEGER_1 *maxval; maxval = NULL; result = 0; if (len <= 0) *dest = 0; else { for (n = 0; n < len; n++, src += delta) { if (maxval == NULL || (back ? compare_fcn (src, maxval, string_len) >= 0 : compare_fcn (src, maxval, string_len) > 0)) { maxval = src; result = (GFC_INTEGER_8)n + 1; } } *dest = result; } } /* Advance to the next element. */ count[0]++; base += sstride[0]; dest += dstride[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. */ base -= sstride[n] * extent[n]; dest -= dstride[n] * extent[n]; n++; if (n >= rank) { /* Break out of the loop. */ continue_loop = 0; break; } else { count[n]++; base += sstride[n]; dest += dstride[n]; } } } } extern void mmaxloc1_8_s1 (gfc_array_i8 * const restrict, gfc_array_s1 * const restrict, const index_type * const restrict, gfc_array_l1 * const restrict, GFC_LOGICAL_4 back, gfc_charlen_type); export_proto(mmaxloc1_8_s1); void mmaxloc1_8_s1 (gfc_array_i8 * const restrict retarray, gfc_array_s1 * const restrict array, const index_type * const restrict pdim, gfc_array_l1 * const restrict mask, GFC_LOGICAL_4 back, gfc_charlen_type string_len) { index_type count[GFC_MAX_DIMENSIONS]; index_type extent[GFC_MAX_DIMENSIONS]; index_type sstride[GFC_MAX_DIMENSIONS]; index_type dstride[GFC_MAX_DIMENSIONS]; index_type mstride[GFC_MAX_DIMENSIONS]; GFC_INTEGER_8 * restrict dest; const GFC_UINTEGER_1 * restrict base; const GFC_LOGICAL_1 * restrict mbase; index_type rank; index_type dim; index_type n; index_type len; index_type delta; index_type mdelta; int mask_kind; dim = (*pdim) - 1; rank = GFC_DESCRIPTOR_RANK (array) - 1; if (unlikely (dim < 0 || dim > rank)) { runtime_error ("Dim argument incorrect in MAXLOC intrinsic: " "is %ld, should be between 1 and %ld", (long int) dim + 1, (long int) rank + 1); } len = GFC_DESCRIPTOR_EXTENT(array,dim); if (len <= 0) return; mbase = mask->base_addr; mask_kind = GFC_DESCRIPTOR_SIZE (mask); 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 runtime_error ("Funny sized logical array"); delta = GFC_DESCRIPTOR_STRIDE(array,dim) * string_len; mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim); for (n = 0; n < dim; n++) { sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n) * string_len; mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n); extent[n] = GFC_DESCRIPTOR_EXTENT(array,n); if (extent[n] < 0) extent[n] = 0; } for (n = dim; n < rank; n++) { sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1) * string_len; mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1); extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1); if (extent[n] < 0) extent[n] = 0; } if (retarray->base_addr == NULL) { size_t alloc_size, str; for (n = 0; n < rank; n++) { if (n == 0) str = 1; else str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1]; GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str); } alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1]; retarray->offset = 0; retarray->dtype.rank = rank; if (alloc_size == 0) { /* Make sure we have a zero-sized array. */ GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1); return; } else retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_8)); } else { if (rank != GFC_DESCRIPTOR_RANK (retarray)) runtime_error ("rank of return array incorrect in MAXLOC intrinsic"); if (unlikely (compile_options.bounds_check)) { bounds_ifunction_return ((array_t *) retarray, extent, "return value", "MAXLOC"); bounds_equal_extents ((array_t *) mask, (array_t *) array, "MASK argument", "MAXLOC"); } } for (n = 0; n < rank; n++) { count[n] = 0; dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n); if (extent[n] <= 0) return; } dest = retarray->base_addr; base = array->base_addr; while (base) { const GFC_UINTEGER_1 * restrict src; const GFC_LOGICAL_1 * restrict msrc; GFC_INTEGER_8 result; src = base; msrc = mbase; { const GFC_UINTEGER_1 *maxval; maxval = base; result = 0; for (n = 0; n < len; n++, src += delta, msrc += mdelta) { if (*msrc) { maxval = src; result = (GFC_INTEGER_8)n + 1; break; } } for (; n < len; n++, src += delta, msrc += mdelta) { if (*msrc && (back ? compare_fcn (src, maxval, string_len) >= 0 : compare_fcn (src, maxval, string_len) > 0)) { maxval = src; result = (GFC_INTEGER_8)n + 1; } } *dest = result; } /* Advance to the next element. */ count[0]++; base += sstride[0]; mbase += mstride[0]; dest += dstride[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. */ base -= sstride[n] * extent[n]; mbase -= mstride[n] * extent[n]; dest -= dstride[n] * extent[n]; n++; if (n >= rank) { /* Break out of the loop. */ base = NULL; break; } else { count[n]++; base += sstride[n]; mbase += mstride[n]; dest += dstride[n]; } } } } extern void smaxloc1_8_s1 (gfc_array_i8 * const restrict, gfc_array_s1 * const restrict, const index_type * const restrict, GFC_LOGICAL_4 *, GFC_LOGICAL_4 back, gfc_charlen_type); export_proto(smaxloc1_8_s1); void smaxloc1_8_s1 (gfc_array_i8 * const restrict retarray, gfc_array_s1 * const restrict array, const index_type * const restrict pdim, GFC_LOGICAL_4 * mask , GFC_LOGICAL_4 back, gfc_charlen_type string_len) { index_type count[GFC_MAX_DIMENSIONS]; index_type extent[GFC_MAX_DIMENSIONS]; index_type dstride[GFC_MAX_DIMENSIONS]; GFC_INTEGER_8 * restrict dest; index_type rank; index_type n; index_type dim; if (*mask) { #ifdef HAVE_BACK_ARG maxloc1_8_s1 (retarray, array, pdim, back, string_len); #else maxloc1_8_s1 (retarray, array, pdim, string_len); #endif return; } /* Make dim zero based to avoid confusion. */ dim = (*pdim) - 1; rank = GFC_DESCRIPTOR_RANK (array) - 1; if (unlikely (dim < 0 || dim > rank)) { runtime_error ("Dim argument incorrect in MAXLOC intrinsic: " "is %ld, should be between 1 and %ld", (long int) dim + 1, (long int) rank + 1); } for (n = 0; n < dim; n++) { extent[n] = GFC_DESCRIPTOR_EXTENT(array,n) * string_len; if (extent[n] <= 0) extent[n] = 0; } for (n = dim; n < rank; n++) { extent[n] = GFC_DESCRIPTOR_EXTENT(array,n + 1) * string_len; if (extent[n] <= 0) extent[n] = 0; } if (retarray->base_addr == NULL) { size_t alloc_size, str; for (n = 0; n < rank; n++) { if (n == 0) str = 1; else str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1]; GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str); } retarray->offset = 0; retarray->dtype.rank = rank; alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1]; if (alloc_size == 0) { /* Make sure we have a zero-sized array. */ GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1); return; } else retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_8)); } else { if (rank != GFC_DESCRIPTOR_RANK (retarray)) runtime_error ("rank of return array incorrect in" " MAXLOC intrinsic: is %ld, should be %ld", (long int) (GFC_DESCRIPTOR_RANK (retarray)), (long int) rank); if (unlikely (compile_options.bounds_check)) { for (n=0; n < rank; n++) { index_type ret_extent; ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n); if (extent[n] != ret_extent) runtime_error ("Incorrect extent in return value of" " MAXLOC intrinsic in dimension %ld:" " is %ld, should be %ld", (long int) n + 1, (long int) ret_extent, (long int) extent[n]); } } } for (n = 0; n < rank; n++) { count[n] = 0; dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n); } dest = retarray->base_addr; while(1) { *dest = 0; count[0]++; dest += dstride[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. */ dest -= dstride[n] * extent[n]; n++; if (n >= rank) return; else { count[n]++; dest += dstride[n]; } } } } #endif