251 lines
6.6 KiB
Plaintext
251 lines
6.6 KiB
Plaintext
dnl Support macro file for intrinsic functions.
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dnl Contains the generic sections of the array functions.
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dnl This file is part of the GNU Fortran 95 Runtime Library (libgfortran)
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dnl Distributed under the GNU GPL with exception. See COPYING for details.
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define(START_FOREACH_FUNCTION,
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`
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extern void name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
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atype * const restrict array);
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export_proto(name`'rtype_qual`_'atype_code);
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void
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name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
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atype * const restrict array)
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{
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type sstride[GFC_MAX_DIMENSIONS];
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index_type dstride;
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const atype_name *base;
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rtype_name *dest;
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index_type rank;
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index_type n;
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rank = GFC_DESCRIPTOR_RANK (array);
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if (rank <= 0)
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runtime_error ("Rank of array needs to be > 0");
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if (retarray->data == NULL)
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{
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retarray->dim[0].lbound = 0;
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retarray->dim[0].ubound = rank-1;
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retarray->dim[0].stride = 1;
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retarray->dtype = (retarray->dtype & ~GFC_DTYPE_RANK_MASK) | 1;
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retarray->offset = 0;
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retarray->data = internal_malloc_size (sizeof (rtype_name) * rank);
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}
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else
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{
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if (GFC_DESCRIPTOR_RANK (retarray) != 1)
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runtime_error ("rank of return array does not equal 1");
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if (retarray->dim[0].ubound + 1 - retarray->dim[0].lbound != rank)
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runtime_error ("dimension of return array incorrect");
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if (retarray->dim[0].stride == 0)
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retarray->dim[0].stride = 1;
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}
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/* TODO: It should be a front end job to correctly set the strides. */
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if (array->dim[0].stride == 0)
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array->dim[0].stride = 1;
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dstride = retarray->dim[0].stride;
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dest = retarray->data;
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for (n = 0; n < rank; n++)
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{
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sstride[n] = array->dim[n].stride;
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extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
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count[n] = 0;
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if (extent[n] <= 0)
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{
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/* Set the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 0;
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return;
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}
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}
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base = array->data;
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/* Initialize the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 0;
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{
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')dnl
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define(START_FOREACH_BLOCK,
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` while (base)
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{
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{
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/* Implementation start. */
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')dnl
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define(FINISH_FOREACH_FUNCTION,
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` /* Implementation end. */
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}
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/* Advance to the next element. */
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count[0]++;
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base += sstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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/* When we get to the end of a dimension, reset it and increment
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the next dimension. */
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count[n] = 0;
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/* We could precalculate these products, but this is a less
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frequently used path so proabably not worth it. */
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base -= sstride[n] * extent[n];
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n++;
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if (n == rank)
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{
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/* Break out of the loop. */
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base = NULL;
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break;
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}
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else
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{
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count[n]++;
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base += sstride[n];
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}
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}
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}
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}
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}')dnl
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define(START_MASKED_FOREACH_FUNCTION,
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`
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extern void `m'name`'rtype_qual`_'atype_code (rtype * const restrict,
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atype * const restrict, gfc_array_l4 * const restrict);
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export_proto(`m'name`'rtype_qual`_'atype_code);
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void
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`m'name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
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atype * const restrict array,
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gfc_array_l4 * const restrict mask)
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{
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type sstride[GFC_MAX_DIMENSIONS];
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index_type mstride[GFC_MAX_DIMENSIONS];
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index_type dstride;
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rtype_name *dest;
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const atype_name *base;
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GFC_LOGICAL_4 *mbase;
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int rank;
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index_type n;
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rank = GFC_DESCRIPTOR_RANK (array);
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if (rank <= 0)
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runtime_error ("Rank of array needs to be > 0");
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if (retarray->data == NULL)
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{
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retarray->dim[0].lbound = 0;
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retarray->dim[0].ubound = rank-1;
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retarray->dim[0].stride = 1;
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retarray->dtype = (retarray->dtype & ~GFC_DTYPE_RANK_MASK) | 1;
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retarray->offset = 0;
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retarray->data = internal_malloc_size (sizeof (rtype_name) * rank);
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}
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else
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{
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if (GFC_DESCRIPTOR_RANK (retarray) != 1)
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runtime_error ("rank of return array does not equal 1");
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if (retarray->dim[0].ubound + 1 - retarray->dim[0].lbound != rank)
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runtime_error ("dimension of return array incorrect");
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if (retarray->dim[0].stride == 0)
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retarray->dim[0].stride = 1;
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}
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/* TODO: It should be a front end job to correctly set the strides. */
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if (array->dim[0].stride == 0)
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array->dim[0].stride = 1;
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if (mask->dim[0].stride == 0)
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mask->dim[0].stride = 1;
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dstride = retarray->dim[0].stride;
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dest = retarray->data;
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for (n = 0; n < rank; n++)
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{
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sstride[n] = array->dim[n].stride;
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mstride[n] = mask->dim[n].stride;
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extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
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count[n] = 0;
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if (extent[n] <= 0)
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{
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/* Set the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 0;
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return;
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}
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}
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base = array->data;
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mbase = mask->data;
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if (GFC_DESCRIPTOR_SIZE (mask) != 4)
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{
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/* This allows the same loop to be used for all logical types. */
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assert (GFC_DESCRIPTOR_SIZE (mask) == 8);
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for (n = 0; n < rank; n++)
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mstride[n] <<= 1;
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mbase = (GFOR_POINTER_L8_TO_L4 (mbase));
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}
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/* Initialize the return value. */
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for (n = 0; n < rank; n++)
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dest[n * dstride] = 0;
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{
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')dnl
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define(START_MASKED_FOREACH_BLOCK, `START_FOREACH_BLOCK')dnl
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define(FINISH_MASKED_FOREACH_FUNCTION,
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` /* Implementation end. */
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}
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/* Advance to the next element. */
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count[0]++;
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base += sstride[0];
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mbase += mstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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/* When we get to the end of a dimension, reset it and increment
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the next dimension. */
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count[n] = 0;
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/* We could precalculate these products, but this is a less
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frequently used path so proabably not worth it. */
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base -= sstride[n] * extent[n];
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mbase -= mstride[n] * extent[n];
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n++;
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if (n == rank)
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{
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/* Break out of the loop. */
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base = NULL;
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break;
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}
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else
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{
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count[n]++;
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base += sstride[n];
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mbase += mstride[n];
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}
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}
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}
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}
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}')dnl
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define(FOREACH_FUNCTION,
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`START_FOREACH_FUNCTION
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$1
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START_FOREACH_BLOCK
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$2
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FINISH_FOREACH_FUNCTION')dnl
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define(MASKED_FOREACH_FUNCTION,
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`START_MASKED_FOREACH_FUNCTION
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$1
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START_MASKED_FOREACH_BLOCK
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$2
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FINISH_MASKED_FOREACH_FUNCTION')dnl
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