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+dnl Support macro file for intrinsic functions.
+dnl Contains the generic sections of the array functions.
+dnl This file is part of the GNU Fortran 95 Runtime Library (libgfortran)
+dnl Distributed under the GNU LGPL. See COPYING for details.
+dnl
+dnl Pass the implementation for a single section as the parameter to
+dnl {MASK_}ARRAY_FUNCTION.
+dnl The variables base, delta, and len describe the input section.
+dnl For masked section the mask is described by mbase and mdelta.
+dnl These should not be modified. The result should be stored in *dest.
+dnl The names count, extent, sstride, dstride, base, dest, rank, dim
+dnl retarray, array, pdim and mstride should not be used.
+dnl The variable n is declared as index_type and may be used.
+dnl Other variable declarations may be placed at the start of the code,
+dnl The types of the array parameter and the return value are
+dnl type_name and rtype_name respectively.
+dnl Execution should be allowed to continue to the end of the block.
+dnl You should not return or break from the inner loop of the implementation.
+dnl Care should also be taken to avoid using the names defined in iparm.m4
+define(START_ARRAY_FUNCTION,
+`void
+`__'name`'rtype_qual`_'type_code (rtype * retarray, atype *array, index_type *pdim)
+{
+ index_type count[GFC_MAX_DIMENSIONS - 1];
+ index_type extent[GFC_MAX_DIMENSIONS - 1];
+ index_type sstride[GFC_MAX_DIMENSIONS - 1];
+ index_type dstride[GFC_MAX_DIMENSIONS - 1];
+ type_name *base;
+ rtype_name *dest;
+ index_type rank;
+ index_type n;
+ index_type len;
+ index_type delta;
+ index_type dim;
+
+ /* Make dim zero based to avoid confusion. */
+ dim = (*pdim) - 1;
+ rank = GFC_DESCRIPTOR_RANK (array) - 1;
+ assert (rank == GFC_DESCRIPTOR_RANK (retarray));
+ if (array->dim[0].stride == 0)
+ array->dim[0].stride = 1;
+ if (retarray->dim[0].stride == 0)
+ retarray->dim[0].stride = 1;
+
+ len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
+ delta = array->dim[dim].stride;
+
+ for (n = 0; n < dim; n++)
+ {
+ sstride[n] = array->dim[n].stride;
+ extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+ }
+ for (n = dim; n < rank; n++)
+ {
+ sstride[n] = array->dim[n + 1].stride;
+ extent[n] =
+ array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
+ }
+
+ for (n = 0; n < rank; n++)
+ {
+ count[n] = 0;
+ dstride[n] = retarray->dim[n].stride;
+ if (extent[n] <= 0)
+ len = 0;
+ }
+
+ base = array->data;
+ dest = retarray->data;
+
+ while (base)
+ {
+ type_name *src;
+ rtype_name result;
+ src = base;
+ {
+')dnl
+define(START_ARRAY_BLOCK,
+` if (len <= 0)
+ *dest = '$1`;
+ else
+ {
+ for (n = 0; n < len; n++, src += delta)
+ {
+')dnl
+define(FINISH_ARRAY_FUNCTION,
+ ` }
+ *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 proabably not worth it. */
+ base -= sstride[n] * extent[n];
+ dest -= dstride[n] * extent[n];
+ n++;
+ if (n == rank)
+ {
+ /* Break out of the look. */
+ base = NULL;
+ break;
+ }
+ else
+ {
+ count[n]++;
+ base += sstride[n];
+ dest += dstride[n];
+ }
+ }
+ }
+}')dnl
+define(START_MASKED_ARRAY_FUNCTION,
+`void
+`__m'name`'rtype_qual`_'type_code (rtype * retarray, atype * array, index_type *pdim, gfc_array_l4 * mask)
+{
+ index_type count[GFC_MAX_DIMENSIONS - 1];
+ index_type extent[GFC_MAX_DIMENSIONS - 1];
+ index_type sstride[GFC_MAX_DIMENSIONS - 1];
+ index_type dstride[GFC_MAX_DIMENSIONS - 1];
+ index_type mstride[GFC_MAX_DIMENSIONS - 1];
+ rtype_name *dest;
+ type_name *base;
+ GFC_LOGICAL_4 *mbase;
+ int rank;
+ int dim;
+ index_type n;
+ index_type len;
+ index_type delta;
+ index_type mdelta;
+
+ dim = (*pdim) - 1;
+ rank = GFC_DESCRIPTOR_RANK (array) - 1;
+ assert (rank == GFC_DESCRIPTOR_RANK (retarray));
+ if (array->dim[0].stride == 0)
+ array->dim[0].stride = 1;
+ if (retarray->dim[0].stride == 0)
+ retarray->dim[0].stride = 1;
+
+ len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
+ if (len <= 0)
+ return;
+ delta = array->dim[dim].stride;
+ mdelta = mask->dim[dim].stride;
+
+ for (n = 0; n < dim; n++)
+ {
+ sstride[n] = array->dim[n].stride;
+ mstride[n] = mask->dim[n].stride;
+ extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+ }
+ for (n = dim; n < rank; n++)
+ {
+ sstride[n] = array->dim[n + 1].stride;
+ mstride[n] = mask->dim[n + 1].stride;
+ extent[n] =
+ array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
+ }
+
+ for (n = 0; n < rank; n++)
+ {
+ count[n] = 0;
+ dstride[n] = retarray->dim[n].stride;
+ if (extent[n] <= 0)
+ return;
+ }
+
+ dest = retarray->data;
+ base = array->data;
+ mbase = mask->data;
+
+ if (GFC_DESCRIPTOR_SIZE (mask) != 4)
+ {
+ /* This allows the same loop to be used for all logical types. */
+ assert (GFC_DESCRIPTOR_SIZE (mask) == 8);
+ for (n = 0; n < rank; n++)
+ mstride[n] <<= 1;
+ mdelta <<= 1;
+ mbase = (GFOR_POINTER_L8_TO_L4 (mbase));
+ }
+
+ while (base)
+ {
+ type_name *src;
+ GFC_LOGICAL_4 *msrc;
+ rtype_name result;
+ src = base;
+ msrc = mbase;
+ {
+')dnl
+define(START_MASKED_ARRAY_BLOCK,
+` if (len <= 0)
+ *dest = '$1`;
+ else
+ {
+ for (n = 0; n < len; n++, src += delta, msrc += mdelta)
+ {
+')dnl
+define(FINISH_MASKED_ARRAY_FUNCTION,
+` }
+ *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 proabably 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 look. */
+ base = NULL;
+ break;
+ }
+ else
+ {
+ count[n]++;
+ base += sstride[n];
+ mbase += mstride[n];
+ dest += dstride[n];
+ }
+ }
+ }
+}')dnl
+define(ARRAY_FUNCTION,
+`START_ARRAY_FUNCTION
+$2
+START_ARRAY_BLOCK($1)
+$3
+FINISH_ARRAY_FUNCTION')dnl
+define(MASKED_ARRAY_FUNCTION,
+`START_MASKED_ARRAY_FUNCTION
+$2
+START_MASKED_ARRAY_BLOCK($1)
+$3
+FINISH_MASKED_ARRAY_FUNCTION')dnl
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