re PR fortran/21915 ([4.0 only] Would like atanh etc. as intrinsics)

2005-06-24  Jerry DeLisle <jvdelisle@verizon.net>

    PR libfortran/21915
    * intrinsics/hyper.c: New file, adds wrapper functions

From-SVN: r101303

libgfortran/intrinsics/hyper.c

+/* Wrapper for systems without the C99 acosh(), asinh(), and atanh() functions
+   Copyright (C) 2005 Free Software Foundation, Inc.
+
+This file is part of the GNU Fortran 95 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 2 of the License, or (at your option) any later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file.  (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+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.
+
+You should have received a copy of the GNU General Public
+License along with libgfortran; see the file COPYING.  If not,
+write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include "config.h"
+#include <math.h>
+#include "libgfortran.h"
+
+#if HAVE_ACOSH && !HAVE_ACOSHF
+float
+acoshf (float x)
+{
+  return (float) acosh ((double) x);
+}
+#endif
+
+#if HAVE_ASINH && !HAVE_ASINHF
+float
+asinhf (float x)
+{
+  return (float) asinh ((double) x);
+}
+#endif
+
+#if HAVE_ATANH && !HAVE_ATANHF
+float
+atanhf (float x)
+{
+  return (float) atanh ((double) x);
+}
+#endif