1 files changed, 88 insertions, 0 deletions
diff --git a/libgfortran/m4/maxval.m4 b/libgfortran/m4/maxval.m4
new file mode 100644
index 000000000..153906880
--- /dev/null
+++ b/libgfortran/m4/maxval.m4
@@ -0,0 +1,88 @@
+`/* 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>'
+
+include(iparm.m4)dnl
+include(ifunction.m4)dnl
+
+`#if defined (HAVE_'atype_name`) && defined (HAVE_'rtype_name`)'
+
+ARRAY_FUNCTION(atype_min,
+`#if defined ('atype_inf`)
+	result = -atype_inf;
+#else
+	result = atype_min;
+#endif',
+`#if defined ('atype_nan`)
+		if (*src >= result)
+		  break;
+	      }
+	    if (unlikely (n >= len))
+	      result = atype_nan;
+	    else for (; n < len; n++, src += delta)
+	      {
+#endif
+		if (*src > result)
+		  result = *src;', `')
+
+MASKED_ARRAY_FUNCTION(atype_min,
+`#if defined ('atype_inf`)
+	result = -atype_inf;
+#else
+	result = atype_min;
+#endif
+#if defined ('atype_nan`)
+	int non_empty_p = 0;
+#endif',
+`#if defined ('atype_inf`) || defined ('atype_nan`)
+		if (*msrc)
+		  {
+#if defined ('atype_nan`)
+		    non_empty_p = 1;
+		    if (*src >= result)
+#endif
+		      break;
+		  }
+	      }
+	    if (unlikely (n >= len))
+	      {
+#if defined ('atype_nan`)
+		result = non_empty_p ? atype_nan : atype_min;
+#else
+		result = atype_min;
+#endif
+	      }
+	    else for (; n < len; n++, src += delta, msrc += mdelta)
+	      {
+#endif
+		if (*msrc && *src > result)
+		  result = *src;')
+
+SCALAR_ARRAY_FUNCTION(atype_min)
+
+#endif