--- /dev/null
+/* Implementation of the MAXVAL intrinsic
+ Copyright 2002, 2007, 2009, 2010 Free Software Foundation, Inc.
+ Contributed by Paul Brook <paul@nowt.org>
+
+This file is part of the GNU Fortran 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.
+
+Libgfortran 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>
+
+
+#if defined (HAVE_GFC_REAL_10) && defined (HAVE_GFC_REAL_10)
+
+
+extern void maxval_r10 (gfc_array_r10 * const restrict,
+ gfc_array_r10 * const restrict, const index_type * const restrict);
+export_proto(maxval_r10);
+
+void
+maxval_r10 (gfc_array_r10 * const restrict retarray,
+ gfc_array_r10 * const restrict array,
+ const index_type * const restrict pdim)
+{
+ index_type count[GFC_MAX_DIMENSIONS];
+ index_type extent[GFC_MAX_DIMENSIONS];
+ index_type sstride[GFC_MAX_DIMENSIONS];
+ index_type dstride[GFC_MAX_DIMENSIONS];
+ const GFC_REAL_10 * restrict base;
+ GFC_REAL_10 * restrict dest;
+ index_type rank;
+ index_type n;
+ index_type len;
+ index_type delta;
+ index_type dim;
+ int continue_loop;
+
+ /* Make dim zero based to avoid confusion. */
+ dim = (*pdim) - 1;
+ rank = GFC_DESCRIPTOR_RANK (array) - 1;
+
+ len = GFC_DESCRIPTOR_EXTENT(array,dim);
+ if (len < 0)
+ len = 0;
+ delta = GFC_DESCRIPTOR_STRIDE(array,dim);
+
+ for (n = 0; n < dim; n++)
+ {
+ sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
+
+ if (extent[n] < 0)
+ extent[n] = 0;
+ }
+ for (n = dim; n < rank; n++)
+ {
+ sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
+
+ if (extent[n] < 0)
+ extent[n] = 0;
+ }
+
+ if (retarray->data == NULL)
+ {
+ size_t alloc_size, str;
+
+ for (n = 0; n < rank; n++)
+ {
+ if (n == 0)
+ str = 1;
+ else
+ str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
+
+ GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
+
+ }
+
+ retarray->offset = 0;
+ retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
+
+ alloc_size = sizeof (GFC_REAL_10) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
+ * extent[rank-1];
+
+ retarray->data = internal_malloc_size (alloc_size);
+ if (alloc_size == 0)
+ {
+ /* Make sure we have a zero-sized array. */
+ GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
+ return;
+
+ }
+ }
+ else
+ {
+ if (rank != GFC_DESCRIPTOR_RANK (retarray))
+ runtime_error ("rank of return array incorrect in"
+ " MAXVAL intrinsic: is %ld, should be %ld",
+ (long int) (GFC_DESCRIPTOR_RANK (retarray)),
+ (long int) rank);
+
+ if (unlikely (compile_options.bounds_check))
+ bounds_ifunction_return ((array_t *) retarray, extent,
+ "return value", "MAXVAL");
+ }
+
+ for (n = 0; n < rank; n++)
+ {
+ count[n] = 0;
+ dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
+ if (extent[n] <= 0)
+ return;
+ }
+
+ base = array->data;
+ dest = retarray->data;
+
+ continue_loop = 1;
+ while (continue_loop)
+ {
+ const GFC_REAL_10 * restrict src;
+ GFC_REAL_10 result;
+ src = base;
+ {
+
+#if defined (GFC_REAL_10_INFINITY)
+ result = -GFC_REAL_10_INFINITY;
+#else
+ result = -GFC_REAL_10_HUGE;
+#endif
+ if (len <= 0)
+ *dest = -GFC_REAL_10_HUGE;
+ else
+ {
+ for (n = 0; n < len; n++, src += delta)
+ {
+
+#if defined (GFC_REAL_10_QUIET_NAN)
+ if (*src >= result)
+ break;
+ }
+ if (unlikely (n >= len))
+ result = GFC_REAL_10_QUIET_NAN;
+ else for (; n < len; n++, src += delta)
+ {
+#endif
+ if (*src > result)
+ result = *src;
+ }
+
+ *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 probably not worth it. */
+ base -= sstride[n] * extent[n];
+ dest -= dstride[n] * extent[n];
+ n++;
+ if (n == rank)
+ {
+ /* Break out of the look. */
+ continue_loop = 0;
+ break;
+ }
+ else
+ {
+ count[n]++;
+ base += sstride[n];
+ dest += dstride[n];
+ }
+ }
+ }
+}
+
+
+extern void mmaxval_r10 (gfc_array_r10 * const restrict,
+ gfc_array_r10 * const restrict, const index_type * const restrict,
+ gfc_array_l1 * const restrict);
+export_proto(mmaxval_r10);
+
+void
+mmaxval_r10 (gfc_array_r10 * const restrict retarray,
+ gfc_array_r10 * const restrict array,
+ const index_type * const restrict pdim,
+ 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 dstride[GFC_MAX_DIMENSIONS];
+ index_type mstride[GFC_MAX_DIMENSIONS];
+ GFC_REAL_10 * restrict dest;
+ const GFC_REAL_10 * restrict base;
+ const GFC_LOGICAL_1 * restrict mbase;
+ int rank;
+ int dim;
+ index_type n;
+ index_type len;
+ index_type delta;
+ index_type mdelta;
+ int mask_kind;
+
+ dim = (*pdim) - 1;
+ rank = GFC_DESCRIPTOR_RANK (array) - 1;
+
+ len = GFC_DESCRIPTOR_EXTENT(array,dim);
+ if (len <= 0)
+ return;
+
+ mbase = mask->data;
+
+ mask_kind = GFC_DESCRIPTOR_SIZE (mask);
+
+ 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");
+
+ delta = GFC_DESCRIPTOR_STRIDE(array,dim);
+ mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
+
+ for (n = 0; n < dim; n++)
+ {
+ sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
+ mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
+
+ if (extent[n] < 0)
+ extent[n] = 0;
+
+ }
+ for (n = dim; n < rank; n++)
+ {
+ sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1);
+ mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
+
+ if (extent[n] < 0)
+ extent[n] = 0;
+ }
+
+ if (retarray->data == NULL)
+ {
+ size_t alloc_size, str;
+
+ for (n = 0; n < rank; n++)
+ {
+ if (n == 0)
+ str = 1;
+ else
+ str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
+
+ GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
+
+ }
+
+ alloc_size = sizeof (GFC_REAL_10) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
+ * extent[rank-1];
+
+ retarray->offset = 0;
+ retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
+
+ if (alloc_size == 0)
+ {
+ /* Make sure we have a zero-sized array. */
+ GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
+ return;
+ }
+ else
+ retarray->data = internal_malloc_size (alloc_size);
+
+ }
+ else
+ {
+ if (rank != GFC_DESCRIPTOR_RANK (retarray))
+ runtime_error ("rank of return array incorrect in MAXVAL intrinsic");
+
+ if (unlikely (compile_options.bounds_check))
+ {
+ bounds_ifunction_return ((array_t *) retarray, extent,
+ "return value", "MAXVAL");
+ bounds_equal_extents ((array_t *) mask, (array_t *) array,
+ "MASK argument", "MAXVAL");
+ }
+ }
+
+ for (n = 0; n < rank; n++)
+ {
+ count[n] = 0;
+ dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
+ if (extent[n] <= 0)
+ return;
+ }
+
+ dest = retarray->data;
+ base = array->data;
+
+ while (base)
+ {
+ const GFC_REAL_10 * restrict src;
+ const GFC_LOGICAL_1 * restrict msrc;
+ GFC_REAL_10 result;
+ src = base;
+ msrc = mbase;
+ {
+
+#if defined (GFC_REAL_10_INFINITY)
+ result = -GFC_REAL_10_INFINITY;
+#else
+ result = -GFC_REAL_10_HUGE;
+#endif
+#if defined (GFC_REAL_10_QUIET_NAN)
+ int non_empty_p = 0;
+#endif
+ if (len <= 0)
+ *dest = -GFC_REAL_10_HUGE;
+ else
+ {
+ for (n = 0; n < len; n++, src += delta, msrc += mdelta)
+ {
+
+#if defined (GFC_REAL_10_INFINITY) || defined (GFC_REAL_10_QUIET_NAN)
+ if (*msrc)
+ {
+#if defined (GFC_REAL_10_QUIET_NAN)
+ non_empty_p = 1;
+ if (*src >= result)
+#endif
+ break;
+ }
+ }
+ if (unlikely (n >= len))
+ {
+#if defined (GFC_REAL_10_QUIET_NAN)
+ result = non_empty_p ? GFC_REAL_10_QUIET_NAN : -GFC_REAL_10_HUGE;
+#else
+ result = -GFC_REAL_10_HUGE;
+#endif
+ }
+ else for (; n < len; n++, src += delta, msrc += mdelta)
+ {
+#endif
+ if (*msrc && *src > result)
+ result = *src;
+ }
+ *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 probably 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];
+ }
+ }
+ }
+}
+
+
+extern void smaxval_r10 (gfc_array_r10 * const restrict,
+ gfc_array_r10 * const restrict, const index_type * const restrict,
+ GFC_LOGICAL_4 *);
+export_proto(smaxval_r10);
+
+void
+smaxval_r10 (gfc_array_r10 * const restrict retarray,
+ gfc_array_r10 * const restrict array,
+ const index_type * const restrict pdim,
+ GFC_LOGICAL_4 * mask)
+{
+ index_type count[GFC_MAX_DIMENSIONS];
+ index_type extent[GFC_MAX_DIMENSIONS];
+ index_type dstride[GFC_MAX_DIMENSIONS];
+ GFC_REAL_10 * restrict dest;
+ index_type rank;
+ index_type n;
+ index_type dim;
+
+
+ if (*mask)
+ {
+ maxval_r10 (retarray, array, pdim);
+ return;
+ }
+ /* Make dim zero based to avoid confusion. */
+ dim = (*pdim) - 1;
+ rank = GFC_DESCRIPTOR_RANK (array) - 1;
+
+ for (n = 0; n < dim; n++)
+ {
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
+
+ if (extent[n] <= 0)
+ extent[n] = 0;
+ }
+
+ for (n = dim; n < rank; n++)
+ {
+ extent[n] =
+ GFC_DESCRIPTOR_EXTENT(array,n + 1);
+
+ if (extent[n] <= 0)
+ extent[n] = 0;
+ }
+
+ if (retarray->data == NULL)
+ {
+ size_t alloc_size, str;
+
+ for (n = 0; n < rank; n++)
+ {
+ if (n == 0)
+ str = 1;
+ else
+ str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
+
+ GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
+
+ }
+
+ retarray->offset = 0;
+ retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
+
+ alloc_size = sizeof (GFC_REAL_10) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
+ * extent[rank-1];
+
+ if (alloc_size == 0)
+ {
+ /* Make sure we have a zero-sized array. */
+ GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
+ return;
+ }
+ else
+ retarray->data = internal_malloc_size (alloc_size);
+ }
+ else
+ {
+ if (rank != GFC_DESCRIPTOR_RANK (retarray))
+ runtime_error ("rank of return array incorrect in"
+ " MAXVAL intrinsic: is %ld, should be %ld",
+ (long int) (GFC_DESCRIPTOR_RANK (retarray)),
+ (long int) rank);
+
+ if (unlikely (compile_options.bounds_check))
+ {
+ for (n=0; n < rank; n++)
+ {
+ index_type ret_extent;
+
+ ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
+ if (extent[n] != ret_extent)
+ runtime_error ("Incorrect extent in return value of"
+ " MAXVAL intrinsic in dimension %ld:"
+ " is %ld, should be %ld", (long int) n + 1,
+ (long int) ret_extent, (long int) extent[n]);
+ }
+ }
+ }
+
+ for (n = 0; n < rank; n++)
+ {
+ count[n] = 0;
+ dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
+ }
+
+ dest = retarray->data;
+
+ while(1)
+ {
+ *dest = -GFC_REAL_10_HUGE;
+ count[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 probably not worth it. */
+ dest -= dstride[n] * extent[n];
+ n++;
+ if (n == rank)
+ return;
+ else
+ {
+ count[n]++;
+ dest += dstride[n];
+ }
+ }
+ }
+}
+
+#endif
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