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-rw-r--r--libgfortran/m4/iforeach.m4279
1 files changed, 279 insertions, 0 deletions
diff --git a/libgfortran/m4/iforeach.m4 b/libgfortran/m4/iforeach.m4
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+++ b/libgfortran/m4/iforeach.m4
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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 GPL with exception. See COPYING for details.
+define(START_FOREACH_FUNCTION,
+`
+extern void name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
+ atype * const restrict array);
+export_proto(name`'rtype_qual`_'atype_code);
+
+void
+name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
+ atype * const restrict array)
+{
+ index_type count[GFC_MAX_DIMENSIONS];
+ index_type extent[GFC_MAX_DIMENSIONS];
+ index_type sstride[GFC_MAX_DIMENSIONS];
+ index_type dstride;
+ const atype_name *base;
+ rtype_name * restrict dest;
+ index_type rank;
+ index_type n;
+
+ rank = GFC_DESCRIPTOR_RANK (array);
+ if (rank <= 0)
+ runtime_error ("Rank of array needs to be > 0");
+
+ if (retarray->data == NULL)
+ {
+ GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
+ retarray->dtype = (retarray->dtype & ~GFC_DTYPE_RANK_MASK) | 1;
+ retarray->offset = 0;
+ retarray->data = internal_malloc_size (sizeof (rtype_name) * rank);
+ }
+ else
+ {
+ if (unlikely (compile_options.bounds_check))
+ bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
+ "u_name");
+ }
+
+ dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
+ dest = retarray->data;
+ for (n = 0; n < rank; n++)
+ {
+ sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
+ count[n] = 0;
+ if (extent[n] <= 0)
+ {
+ /* Set the return value. */
+ for (n = 0; n < rank; n++)
+ dest[n * dstride] = 0;
+ return;
+ }
+ }
+
+ base = array->data;
+
+ /* Initialize the return value. */
+ for (n = 0; n < rank; n++)
+ dest[n * dstride] = 1;
+ {
+')dnl
+define(START_FOREACH_BLOCK,
+` while (base)
+ {
+ do
+ {
+ /* Implementation start. */
+')dnl
+define(FINISH_FOREACH_FUNCTION,
+` /* Implementation end. */
+ /* Advance to the next element. */
+ base += sstride[0];
+ }
+ while (++count[0] != extent[0]);
+ n = 0;
+ do
+ {
+ /* 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. */
+ base -= sstride[n] * extent[n];
+ n++;
+ if (n == rank)
+ {
+ /* Break out of the loop. */
+ base = NULL;
+ break;
+ }
+ else
+ {
+ count[n]++;
+ base += sstride[n];
+ }
+ }
+ while (count[n] == extent[n]);
+ }
+ }
+}')dnl
+define(START_MASKED_FOREACH_FUNCTION,
+`
+extern void `m'name`'rtype_qual`_'atype_code (rtype * const restrict,
+ atype * const restrict, gfc_array_l1 * const restrict);
+export_proto(`m'name`'rtype_qual`_'atype_code);
+
+void
+`m'name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
+ atype * const restrict array,
+ gfc_array_l1 * const restrict mask)
+{
+ index_type count[GFC_MAX_DIMENSIONS];
+ index_type extent[GFC_MAX_DIMENSIONS];
+ index_type sstride[GFC_MAX_DIMENSIONS];
+ index_type mstride[GFC_MAX_DIMENSIONS];
+ index_type dstride;
+ rtype_name *dest;
+ const atype_name *base;
+ GFC_LOGICAL_1 *mbase;
+ int rank;
+ index_type n;
+ int mask_kind;
+
+ rank = GFC_DESCRIPTOR_RANK (array);
+ if (rank <= 0)
+ runtime_error ("Rank of array needs to be > 0");
+
+ if (retarray->data == NULL)
+ {
+ GFC_DIMENSION_SET(retarray->dim[0], 0, rank - 1, 1);
+ retarray->dtype = (retarray->dtype & ~GFC_DTYPE_RANK_MASK) | 1;
+ retarray->offset = 0;
+ retarray->data = internal_malloc_size (sizeof (rtype_name) * rank);
+ }
+ else
+ {
+ if (unlikely (compile_options.bounds_check))
+ {
+
+ bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
+ "u_name");
+ bounds_equal_extents ((array_t *) mask, (array_t *) array,
+ "MASK argument", "u_name");
+ }
+ }
+
+ mask_kind = GFC_DESCRIPTOR_SIZE (mask);
+
+ mbase = mask->data;
+
+ if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
+#ifdef HAVE_GFC_LOGICAL_16
+ || mask_kind == 16
+#endif
+ )
+ mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
+ else
+ runtime_error ("Funny sized logical array");
+
+ dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
+ dest = retarray->data;
+ for (n = 0; n < rank; n++)
+ {
+ sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
+ mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
+ count[n] = 0;
+ if (extent[n] <= 0)
+ {
+ /* Set the return value. */
+ for (n = 0; n < rank; n++)
+ dest[n * dstride] = 0;
+ return;
+ }
+ }
+
+ base = array->data;
+
+ /* Initialize the return value. */
+ for (n = 0; n < rank; n++)
+ dest[n * dstride] = 0;
+ {
+')dnl
+define(START_MASKED_FOREACH_BLOCK, `START_FOREACH_BLOCK')dnl
+define(FINISH_MASKED_FOREACH_FUNCTION,
+` /* Implementation end. */
+ /* Advance to the next element. */
+ base += sstride[0];
+ mbase += mstride[0];
+ }
+ while (++count[0] != extent[0]);
+ n = 0;
+ do
+ {
+ /* 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. */
+ base -= sstride[n] * extent[n];
+ mbase -= mstride[n] * extent[n];
+ n++;
+ if (n == rank)
+ {
+ /* Break out of the loop. */
+ base = NULL;
+ break;
+ }
+ else
+ {
+ count[n]++;
+ base += sstride[n];
+ mbase += mstride[n];
+ }
+ }
+ while (count[n] == extent[n]);
+ }
+ }
+}')dnl
+define(FOREACH_FUNCTION,
+`START_FOREACH_FUNCTION
+$1
+START_FOREACH_BLOCK
+$2
+FINISH_FOREACH_FUNCTION')dnl
+define(MASKED_FOREACH_FUNCTION,
+`START_MASKED_FOREACH_FUNCTION
+$1
+START_MASKED_FOREACH_BLOCK
+$2
+FINISH_MASKED_FOREACH_FUNCTION')dnl
+define(SCALAR_FOREACH_FUNCTION,
+`
+extern void `s'name`'rtype_qual`_'atype_code (rtype * const restrict,
+ atype * const restrict, GFC_LOGICAL_4 *);
+export_proto(`s'name`'rtype_qual`_'atype_code);
+
+void
+`s'name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
+ atype * const restrict array,
+ GFC_LOGICAL_4 * mask)
+{
+ index_type rank;
+ index_type dstride;
+ index_type n;
+ rtype_name *dest;
+
+ if (*mask)
+ {
+ name`'rtype_qual`_'atype_code (retarray, array);
+ return;
+ }
+
+ rank = GFC_DESCRIPTOR_RANK (array);
+
+ if (rank <= 0)
+ runtime_error ("Rank of array needs to be > 0");
+
+ if (retarray->data == NULL)
+ {
+ GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
+ retarray->dtype = (retarray->dtype & ~GFC_DTYPE_RANK_MASK) | 1;
+ retarray->offset = 0;
+ retarray->data = internal_malloc_size (sizeof (rtype_name) * rank);
+ }
+ else if (unlikely (compile_options.bounds_check))
+ {
+ bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
+ "u_name");
+ }
+
+ dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
+ dest = retarray->data;
+ for (n = 0; n<rank; n++)
+ dest[n * dstride] = $1 ;
+}')dnl
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