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[/] [openrisc/] [tags/] [gnu-dev/] [fsf-gcc-snapshot-1-mar-12/] [or1k-gcc/] [libgfortran/] [m4/] [cshift1.m4] - Rev 733
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`/* Implementation of the CSHIFT intrinsic Copyright 2003, 2007, 2009 Free Software Foundation, Inc. Contributed by Feng Wang <wf_cs@yahoo.com> 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. 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 <http://www.gnu.org/licenses/>. */ #include "libgfortran.h" #include <stdlib.h> #include <assert.h> #include <string.h>' 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; 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->data == NULL) { int i; ret->data = internal_malloc_size (size * arraysize); ret->offset = 0; ret->dtype = array->dtype; for (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; 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->data; sptr = array->data; hptr = h->data; while (rptr) { /* Do the shift for this dimension. */ sh = *hptr; sh = (div (sh, len)).rem; if (sh < 0) sh += len; src = &sptr[sh * soffset]; dest = rptr; for (n = 0; n < len; n++) { memcpy (dest, src, size); dest += roffset; if (n == len - sh - 1) src = sptr; else 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'
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