1 dnl Support macro file for intrinsic functions.
2 dnl Contains the generic sections of the array functions.
3 dnl This file is part of the GNU Fortran Runtime Library (libgfortran)
4 dnl Distributed under the GNU GPL with exception. See COPYING for details.
6 dnl Pass the implementation for a single section as the parameter to
7 dnl {MASK_}ARRAY_FUNCTION.
8 dnl The variables base, delta, and len describe the input section.
9 dnl For masked section the mask is described by mbase and mdelta.
10 dnl These should not be modified. The result should be stored in *dest.
11 dnl The names count, extent, sstride, dstride, base, dest, rank, dim
12 dnl retarray, array, pdim and mstride should not be used.
13 dnl The variable n is declared as index_type and may be used.
14 dnl Other variable declarations may be placed at the start of the code,
15 dnl The types of the array parameter and the return value are
16 dnl atype_name and rtype_name respectively.
17 dnl Execution should be allowed to continue to the end of the block.
18 dnl You should not return or break from the inner loop of the implementation.
19 dnl Care should also be taken to avoid using the names defined in iparm.m4
20 define(START_ARRAY_FUNCTION,
22 extern void name`'rtype_qual`_'atype_code (rtype * const restrict,
23 gfc_array_l1 * const restrict, const index_type * const restrict);
24 export_proto(name`'rtype_qual`_'atype_code);
27 name`'rtype_qual`_'atype_code (rtype * const restrict retarray,
28 gfc_array_l1 * const restrict array,
29 const index_type * const restrict pdim)
31 index_type count[GFC_MAX_DIMENSIONS];
32 index_type extent[GFC_MAX_DIMENSIONS];
33 index_type sstride[GFC_MAX_DIMENSIONS];
34 index_type dstride[GFC_MAX_DIMENSIONS];
35 const GFC_LOGICAL_1 * restrict base;
36 rtype_name * restrict dest;
45 /* Make dim zero based to avoid confusion. */
47 rank = GFC_DESCRIPTOR_RANK (array) - 1;
49 src_kind = GFC_DESCRIPTOR_SIZE (array);
51 len = GFC_DESCRIPTOR_EXTENT(array,dim);
55 delta = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
57 for (n = 0; n < dim; n++)
59 sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,n);
60 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
65 for (n = dim; n < rank; n++)
67 sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,n + 1);
68 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n + 1);
74 if (retarray->base_addr == NULL)
76 size_t alloc_size, str;
78 for (n = 0; n < rank; n++)
83 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
85 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
90 retarray->dtype.rank = rank;
92 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
94 retarray->base_addr = xmallocarray (alloc_size, sizeof (rtype_name));
100 if (rank != GFC_DESCRIPTOR_RANK (retarray))
101 runtime_error ("rank of return array incorrect in"
102 " u_name intrinsic: is %ld, should be %ld",
103 (long int) GFC_DESCRIPTOR_RANK (retarray),
106 if (unlikely (compile_options.bounds_check))
108 for (n=0; n < rank; n++)
110 index_type ret_extent;
112 ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
113 if (extent[n] != ret_extent)
114 runtime_error ("Incorrect extent in return value of"
115 " u_name intrinsic in dimension %d:"
116 " is %ld, should be %ld", (int) n + 1,
117 (long int) ret_extent, (long int) extent[n]);
122 for (n = 0; n < rank; n++)
125 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
130 base = array->base_addr;
132 if (src_kind == 1 || src_kind == 2 || src_kind == 4 || src_kind == 8
133 #ifdef HAVE_GFC_LOGICAL_16
139 base = GFOR_POINTER_TO_L1 (base, src_kind);
142 internal_error (NULL, "Funny sized logical array in u_name intrinsic");
144 dest = retarray->base_addr;
147 while (continue_loop)
149 const GFC_LOGICAL_1 * restrict src;
154 define(START_ARRAY_BLOCK,
159 for (n = 0; n < len; n++, src += delta)
162 define(FINISH_ARRAY_FUNCTION,
167 /* Advance to the next element. */
172 while (count[n] == extent[n])
174 /* When we get to the end of a dimension, reset it and increment
175 the next dimension. */
177 /* We could precalculate these products, but this is a less
178 frequently used path so probably not worth it. */
179 base -= sstride[n] * extent[n];
180 dest -= dstride[n] * extent[n];
184 /* Break out of the loop. */
197 define(ARRAY_FUNCTION,
198 `START_ARRAY_FUNCTION
200 START_ARRAY_BLOCK($1)
202 FINISH_ARRAY_FUNCTION')dnl