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1 files changed, 212 insertions, 0 deletions

diff --git a/libgfortran/generated/norm2_r8.c b/libgfortran/generated/norm2_r8.c
new file mode 100644
index 000000000..14487e8b2
--- /dev/null
+++ b/libgfortran/generated/norm2_r8.c
@@ -0,0 +1,212 @@
+/* Implementation of the NORM2 intrinsic
+   Copyright 2010 Free Software Foundation, Inc.
+   Contributed by Tobias Burnus  <burnus@net-b.de>
+
+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 <math.h>
+#include <assert.h>
+
+
+
+#if defined (HAVE_GFC_REAL_8) && defined (HAVE_GFC_REAL_8) && defined (HAVE_SQRT) && defined (HAVE_FABS)
+
+#define MATHFUNC(funcname) funcname
+#define BUILTINMATHFUNC(funcname) MATHFUNC(funcname)
+
+
+extern void norm2_r8 (gfc_array_r8 * const restrict, 
+	gfc_array_r8 * const restrict, const index_type * const restrict);
+export_proto(norm2_r8);
+
+void
+norm2_r8 (gfc_array_r8 * const restrict retarray, 
+	gfc_array_r8 * 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_8 * restrict base;
+  GFC_REAL_8 * 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_8) * 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"
+		       " NORM 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", "NORM");
+    }
+
+  for (n = 0; n < rank; n++)
+    {
+      count[n] = 0;
+      dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
+      if (extent[n] <= 0)
+	len = 0;
+    }
+
+  base = array->data;
+  dest = retarray->data;
+
+  continue_loop = 1;
+  while (continue_loop)
+    {
+      const GFC_REAL_8 * restrict src;
+      GFC_REAL_8 result;
+      src = base;
+      {
+
+	GFC_REAL_8 scale;
+	result = 0;
+	scale = 1;
+	if (len <= 0)
+	  *dest = 0;
+	else
+	  {
+	    for (n = 0; n < len; n++, src += delta)
+	      {
+
+	  if (*src != 0)
+	    {
+	      GFC_REAL_8 absX, val;
+	      absX = MATHFUNC(fabs) (*src);
+	      if (scale < absX)
+		{
+		  val = scale / absX;
+		  result = 1 + result * val * val;
+		  scale = absX;
+		}
+	      else
+		{
+		  val = absX / scale;
+		  result += val * val;
+		}
+	    }
+	      }
+	    result = scale * MATHFUNC(sqrt) (result);
+	    *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];
+	    }
+	}
+    }
+}
+
+#endif