`/* Implementation of the CSHIFT intrinsic Copyright (C) 2003-2018 Free Software Foundation, Inc. Contributed by Feng Wang 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. Ligbfortran 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" #include ' include(iparm.m4)dnl `#if defined (HAVE_'atype_name`) static void cshift1 (gfc_array_char * const restrict ret, const gfc_array_char * const restrict array, const 'atype` * const restrict h, const 'atype_name` * const restrict pwhich) { /* r.* indicates the return array. */ index_type rstride[GFC_MAX_DIMENSIONS]; index_type rstride0; index_type roffset; char *rptr; char *dest; /* s.* indicates the source array. */ index_type sstride[GFC_MAX_DIMENSIONS]; index_type sstride0; index_type soffset; const char *sptr; const char *src; /* h.* indicates the shift array. */ index_type hstride[GFC_MAX_DIMENSIONS]; index_type hstride0; const 'atype_name` *hptr; index_type count[GFC_MAX_DIMENSIONS]; index_type extent[GFC_MAX_DIMENSIONS]; index_type dim; index_type len; index_type n; int which; 'atype_name` sh; index_type arraysize; index_type size; index_type type_size; if (pwhich) which = *pwhich - 1; else which = 0; if (which < 0 || (which + 1) > GFC_DESCRIPTOR_RANK (array)) runtime_error ("Argument ''`DIM''` is out of range in call to ''`CSHIFT''`"); size = GFC_DESCRIPTOR_SIZE(array); arraysize = size0 ((array_t *)array); if (ret->base_addr == NULL) { ret->base_addr = xmallocarray (arraysize, size); ret->offset = 0; GFC_DTYPE_COPY(ret,array); for (index_type i = 0; i < GFC_DESCRIPTOR_RANK (array); i++) { index_type ub, str; ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1; if (i == 0) str = 1; else str = GFC_DESCRIPTOR_EXTENT(ret,i-1) * GFC_DESCRIPTOR_STRIDE(ret,i-1); GFC_DIMENSION_SET(ret->dim[i], 0, ub, str); } } else if (unlikely (compile_options.bounds_check)) { bounds_equal_extents ((array_t *) ret, (array_t *) array, "return value", "CSHIFT"); } if (unlikely (compile_options.bounds_check)) { bounds_reduced_extents ((array_t *) h, (array_t *) array, which, "SHIFT argument", "CSHIFT"); } if (arraysize == 0) return; /* See if we should dispatch to a helper function. */ type_size = GFC_DTYPE_TYPE_SIZE (array); switch (type_size) { case GFC_DTYPE_LOGICAL_1: case GFC_DTYPE_INTEGER_1: cshift1_'atype_kind`_i1 ((gfc_array_i1 *)ret, (gfc_array_i1 *) array, h, pwhich); return; case GFC_DTYPE_LOGICAL_2: case GFC_DTYPE_INTEGER_2: cshift1_'atype_kind`_i2 ((gfc_array_i2 *)ret, (gfc_array_i2 *) array, h, pwhich); return; case GFC_DTYPE_LOGICAL_4: case GFC_DTYPE_INTEGER_4: cshift1_'atype_kind`_i4 ((gfc_array_i4 *)ret, (gfc_array_i4 *) array, h, pwhich); return; case GFC_DTYPE_LOGICAL_8: case GFC_DTYPE_INTEGER_8: cshift1_'atype_kind`_i8 ((gfc_array_i8 *)ret, (gfc_array_i8 *) array, h, pwhich); return; #if defined (HAVE_INTEGER_16) case GFC_DTYPE_LOGICAL_16: case GFC_DTYPE_INTEGER_16: cshift1_'atype_kind`_i16 ((gfc_array_i16 *)ret, (gfc_array_i16 *) array, h, pwhich); return; #endif case GFC_DTYPE_REAL_4: cshift1_'atype_kind`_r4 ((gfc_array_r4 *)ret, (gfc_array_r4 *) array, h, pwhich); return; case GFC_DTYPE_REAL_8: cshift1_'atype_kind`_r8 ((gfc_array_r8 *)ret, (gfc_array_r8 *) array, h, pwhich); return; #if defined (HAVE_REAL_10) case GFC_DTYPE_REAL_10: cshift1_'atype_kind`_r10 ((gfc_array_r10 *)ret, (gfc_array_r10 *) array, h, pwhich); return; #endif #if defined (HAVE_REAL_16) case GFC_DTYPE_REAL_16: cshift1_'atype_kind`_r16 ((gfc_array_r16 *)ret, (gfc_array_r16 *) array, h, pwhich); return; #endif case GFC_DTYPE_COMPLEX_4: cshift1_'atype_kind`_c4 ((gfc_array_c4 *)ret, (gfc_array_c4 *) array, h, pwhich); return; case GFC_DTYPE_COMPLEX_8: cshift1_'atype_kind`_c8 ((gfc_array_c8 *)ret, (gfc_array_c8 *) array, h, pwhich); return; #if defined (HAVE_COMPLEX_10) case GFC_DTYPE_COMPLEX_10: cshift1_'atype_kind`_c10 ((gfc_array_c10 *)ret, (gfc_array_c10 *) array, h, pwhich); return; #endif #if defined (HAVE_COMPLEX_16) case GFC_DTYPE_COMPLEX_16: cshift1_'atype_kind`_c16 ((gfc_array_c16 *)ret, (gfc_array_c16 *) array, h, pwhich); return; #endif default: break; } extent[0] = 1; count[0] = 0; n = 0; /* Initialized for avoiding compiler warnings. */ roffset = size; soffset = size; len = 0; for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++) { if (dim == which) { roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); if (roffset == 0) roffset = size; soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); if (soffset == 0) soffset = size; len = GFC_DESCRIPTOR_EXTENT(array,dim); } else { count[n] = 0; extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim); rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n); n++; } } if (sstride[0] == 0) sstride[0] = size; if (rstride[0] == 0) rstride[0] = size; if (hstride[0] == 0) hstride[0] = 1; dim = GFC_DESCRIPTOR_RANK (array); rstride0 = rstride[0]; sstride0 = sstride[0]; hstride0 = hstride[0]; rptr = ret->base_addr; sptr = array->base_addr; hptr = h->base_addr; while (rptr) { /* Do the shift for this dimension. */ sh = *hptr; /* Normal case should be -len < sh < len; try to avoid the expensive remainder operation if possible. */ if (sh < 0) sh += len; if (unlikely (sh >= len || sh < 0)) { sh = sh % len; if (sh < 0) sh += len; } src = &sptr[sh * soffset]; dest = rptr; if (soffset == size && roffset == size) { size_t len1 = sh * size; size_t len2 = (len - sh) * size; memcpy (rptr, sptr + len1, len2); memcpy (rptr + len2, sptr, len1); } else { for (n = 0; n < len - sh; n++) { memcpy (dest, src, size); dest += roffset; src += soffset; } for (src = sptr, n = 0; n < sh; n++) { memcpy (dest, src, size); dest += roffset; src += soffset; } } /* Advance to the next section. */ rptr += rstride0; sptr += sstride0; hptr += hstride0; count[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. */ rptr -= rstride[n] * extent[n]; sptr -= sstride[n] * extent[n]; hptr -= hstride[n] * extent[n]; n++; if (n >= dim - 1) { /* Break out of the loop. */ rptr = NULL; break; } else { count[n]++; rptr += rstride[n]; sptr += sstride[n]; hptr += hstride[n]; } } } } void cshift1_'atype_kind` (gfc_array_char * const restrict, const gfc_array_char * const restrict, const 'atype` * const restrict, const 'atype_name` * const restrict); export_proto(cshift1_'atype_kind`); void cshift1_'atype_kind` (gfc_array_char * const restrict ret, const gfc_array_char * const restrict array, const 'atype` * const restrict h, const 'atype_name` * const restrict pwhich) { cshift1 (ret, array, h, pwhich); } void cshift1_'atype_kind`_char (gfc_array_char * const restrict ret, GFC_INTEGER_4, const gfc_array_char * const restrict array, const 'atype` * const restrict h, const 'atype_name` * const restrict pwhich, GFC_INTEGER_4); export_proto(cshift1_'atype_kind`_char); void cshift1_'atype_kind`_char (gfc_array_char * const restrict ret, GFC_INTEGER_4 ret_length __attribute__((unused)), const gfc_array_char * const restrict array, const 'atype` * const restrict h, const 'atype_name` * const restrict pwhich, GFC_INTEGER_4 array_length __attribute__((unused))) { cshift1 (ret, array, h, pwhich); } void cshift1_'atype_kind`_char4 (gfc_array_char * const restrict ret, GFC_INTEGER_4, const gfc_array_char * const restrict array, const 'atype` * const restrict h, const 'atype_name` * const restrict pwhich, GFC_INTEGER_4); export_proto(cshift1_'atype_kind`_char4); void cshift1_'atype_kind`_char4 (gfc_array_char * const restrict ret, GFC_INTEGER_4 ret_length __attribute__((unused)), const gfc_array_char * const restrict array, const 'atype` * const restrict h, const 'atype_name` * const restrict pwhich, GFC_INTEGER_4 array_length __attribute__((unused))) { cshift1 (ret, array, h, pwhich); } #endif'