1 files changed, 98 insertions, 0 deletions
diff --git a/libgfortran/m4/maxloc1.m4 b/libgfortran/m4/maxloc1.m4
new file mode 100644
index 0000000000..61f35d25e0
--- /dev/null
+++ b/libgfortran/m4/maxloc1.m4
@@ -0,0 +1,98 @@
+`/* Implementation of the MAXLOC intrinsic
+   Copyright (C) 2002-2017 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(iparm.m4)dnl
+include(ifunction.m4)dnl
+
+`#if defined (HAVE_'atype_name`) && defined (HAVE_'rtype_name`)'
+
+ARRAY_FUNCTION(0,
+`	atype_name maxval;
+#if defined ('atype_inf`)
+	maxval = -atype_inf;
+#else
+	maxval = atype_min;
+#endif
+	result = 1;',
+`#if defined ('atype_nan`)
+		if (*src >= maxval)
+		  {
+		    maxval = *src;
+		    result = (rtype_name)n + 1;
+		    break;
+		  }
+	      }
+	    for (; n < len; n++, src += delta)
+	      {
+#endif
+		if (*src > maxval)
+		  {
+		    maxval = *src;
+		    result = (rtype_name)n + 1;
+		  }', `')
+
+MASKED_ARRAY_FUNCTION(0,
+`	atype_name maxval;
+#if defined ('atype_inf`)
+	maxval = -atype_inf;
+#else
+	maxval = atype_min;
+#endif
+#if defined ('atype_nan`)
+	rtype_name result2 = 0;
+#endif
+	result = 0;',
+`		if (*msrc)
+		  {
+#if defined ('atype_nan`)
+		    if (!result2)
+		      result2 = (rtype_name)n + 1;
+		    if (*src >= maxval)
+#endif
+		      {
+			maxval = *src;
+			result = (rtype_name)n + 1;
+			break;
+		      }
+		  }
+	      }
+#if defined ('atype_nan`)
+	    if (unlikely (n >= len))
+	      result = result2;
+	    else
+#endif
+	    for (; n < len; n++, src += delta, msrc += mdelta)
+	      {
+		if (*msrc && *src > maxval)
+		  {
+		    maxval = *src;
+		    result = (rtype_name)n + 1;
+		  }')
+
+SCALAR_ARRAY_FUNCTION(0)
+
+#endif