libgfortran/generated/cshift1_16.c - gcc - Git at Google

 /* 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>


 #if defined (HAVE_GFC_INTEGER_16)

 static void
 cshift1 (gfc_array_char * const restrict ret,
 	const gfc_array_char * const restrict array,
 	const gfc_array_i16 * const restrict h,
 	const GFC_INTEGER_16 * const restrict pwhich,
 	index_type size)
 {
   /* 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 GFC_INTEGER_16 *hptr;

   index_type count[GFC_MAX_DIMENSIONS];
   index_type extent[GFC_MAX_DIMENSIONS];
   index_type dim;
   index_type len;
   index_type n;
   int which;
   GFC_INTEGER_16 sh;
   index_type arraysize;

   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'");

   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++)
         {
           ret->dim[i].lbound = 0;
           ret->dim[i].ubound = array->dim[i].ubound - array->dim[i].lbound;

           if (i == 0)
             ret->dim[i].stride = 1;
           else
             ret->dim[i].stride = (ret->dim[i-1].ubound + 1) * ret->dim[i-1].stride;
         }
     }

   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 = ret->dim[dim].stride * size;
           if (roffset == 0)
             roffset = size;
           soffset = array->dim[dim].stride * size;
           if (soffset == 0)
             soffset = size;
           len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
         }
       else
         {
           count[n] = 0;
           extent[n] = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
           rstride[n] = ret->dim[dim].stride * size;
           sstride[n] = array->dim[dim].stride * size;

           hstride[n] = h->dim[n].stride;
           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_16 (gfc_array_char * const restrict,
 	const gfc_array_char * const restrict,
 	const gfc_array_i16 * const restrict,
 	const GFC_INTEGER_16 * const restrict);
 export_proto(cshift1_16);

 void
 cshift1_16 (gfc_array_char * const restrict ret,
 	const gfc_array_char * const restrict array,
 	const gfc_array_i16 * const restrict h,
 	const GFC_INTEGER_16 * const restrict pwhich)
 {
   cshift1 (ret, array, h, pwhich, GFC_DESCRIPTOR_SIZE (array));
 }


 void cshift1_16_char (gfc_array_char * const restrict ret,
 	GFC_INTEGER_4,
 	const gfc_array_char * const restrict array,
 	const gfc_array_i16 * const restrict h,
 	const GFC_INTEGER_16 * const restrict pwhich,
 	GFC_INTEGER_4);
 export_proto(cshift1_16_char);

 void
 cshift1_16_char (gfc_array_char * const restrict ret,
 	GFC_INTEGER_4 ret_length __attribute__((unused)),
 	const gfc_array_char * const restrict array,
 	const gfc_array_i16 * const restrict h,
 	const GFC_INTEGER_16 * const restrict pwhich,
 	GFC_INTEGER_4 array_length)
 {
   cshift1 (ret, array, h, pwhich, array_length);
 }


 void cshift1_16_char4 (gfc_array_char * const restrict ret,
 	GFC_INTEGER_4,
 	const gfc_array_char * const restrict array,
 	const gfc_array_i16 * const restrict h,
 	const GFC_INTEGER_16 * const restrict pwhich,
 	GFC_INTEGER_4);
 export_proto(cshift1_16_char4);

 void
 cshift1_16_char4 (gfc_array_char * const restrict ret,
 	GFC_INTEGER_4 ret_length __attribute__((unused)),
 	const gfc_array_char * const restrict array,
 	const gfc_array_i16 * const restrict h,
 	const GFC_INTEGER_16 * const restrict pwhich,
 	GFC_INTEGER_4 array_length)
 {
   cshift1 (ret, array, h, pwhich, array_length * sizeof (gfc_char4_t));
 }

 #endif
	/* 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>


	#if defined (HAVE_GFC_INTEGER_16)

	static void
	cshift1 (gfc_array_char * const restrict ret,
	const gfc_array_char * const restrict array,
	const gfc_array_i16 * const restrict h,
	const GFC_INTEGER_16 * const restrict pwhich,
	index_type size)
	{
	/* 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 GFC_INTEGER_16 *hptr;

	index_type count[GFC_MAX_DIMENSIONS];
	index_type extent[GFC_MAX_DIMENSIONS];
	index_type dim;
	index_type len;
	index_type n;
	int which;
	GFC_INTEGER_16 sh;
	index_type arraysize;

	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'");

	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++)
	{
	ret->dim[i].lbound = 0;
	ret->dim[i].ubound = array->dim[i].ubound - array->dim[i].lbound;

	if (i == 0)
	ret->dim[i].stride = 1;
	else
	ret->dim[i].stride = (ret->dim[i-1].ubound + 1) * ret->dim[i-1].stride;
	}
	}

	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 = ret->dim[dim].stride * size;
	if (roffset == 0)
	roffset = size;
	soffset = array->dim[dim].stride * size;
	if (soffset == 0)
	soffset = size;
	len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
	}
	else
	{
	count[n] = 0;
	extent[n] = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
	rstride[n] = ret->dim[dim].stride * size;
	sstride[n] = array->dim[dim].stride * size;

	hstride[n] = h->dim[n].stride;
	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_16 (gfc_array_char * const restrict,
	const gfc_array_char * const restrict,
	const gfc_array_i16 * const restrict,
	const GFC_INTEGER_16 * const restrict);
	export_proto(cshift1_16);

	void
	cshift1_16 (gfc_array_char * const restrict ret,
	const gfc_array_char * const restrict array,
	const gfc_array_i16 * const restrict h,
	const GFC_INTEGER_16 * const restrict pwhich)
	{
	cshift1 (ret, array, h, pwhich, GFC_DESCRIPTOR_SIZE (array));
	}


	void cshift1_16_char (gfc_array_char * const restrict ret,
	GFC_INTEGER_4,
	const gfc_array_char * const restrict array,
	const gfc_array_i16 * const restrict h,
	const GFC_INTEGER_16 * const restrict pwhich,
	GFC_INTEGER_4);
	export_proto(cshift1_16_char);

	void
	cshift1_16_char (gfc_array_char * const restrict ret,
	GFC_INTEGER_4 ret_length __attribute__((unused)),
	const gfc_array_char * const restrict array,
	const gfc_array_i16 * const restrict h,
	const GFC_INTEGER_16 * const restrict pwhich,
	GFC_INTEGER_4 array_length)
	{
	cshift1 (ret, array, h, pwhich, array_length);
	}


	void cshift1_16_char4 (gfc_array_char * const restrict ret,
	GFC_INTEGER_4,
	const gfc_array_char * const restrict array,
	const gfc_array_i16 * const restrict h,
	const GFC_INTEGER_16 * const restrict pwhich,
	GFC_INTEGER_4);
	export_proto(cshift1_16_char4);

	void
	cshift1_16_char4 (gfc_array_char * const restrict ret,
	GFC_INTEGER_4 ret_length __attribute__((unused)),
	const gfc_array_char * const restrict array,
	const gfc_array_i16 * const restrict h,
	const GFC_INTEGER_16 * const restrict pwhich,
	GFC_INTEGER_4 array_length)
	{
	cshift1 (ret, array, h, pwhich, array_length * sizeof (gfc_char4_t));
	}

	#endif