bessel.c: New file.

2004-08-29  Steven G. Kargl  <kargls@comcast.net>
	Paul Brook  <paul@codesourcery.com>

	* intrinsics/bessel.c: New file.
	* intrinsics/erf.c: New file.
	* Makefie.am: Add intrinsics/bessel.c and intrinsics/erf.c.
	* configure.ac: Test for C99 Bessel and Error functions.
	* Makefile.in: Regenerate.
	* config.h.in: Regenerate.
	* configure: Regenerate.

From-SVN: r86728

libgfortran/intrinsics/bessel.c

+/* Wrapper for systems without the various C99 single precision Bessel
+   functions.
+   Copyright (C) 2004 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 Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with libgfortran; see the file COPYING.LIB.  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"
+
+/* Assume we have all or none of these.  */
+#if HAVE_J0 && !HAVE_J0F
+float
+j0f (float x)
+{
+  return (float) j0 ((double) x);
+}
+#endif
+
+#if HAVE_J1 && !HAVE_J1F
+float j1f (float x)
+{
+  return (float) j1 ((double) x);
+}
+#endif
+
+#if HAVE_JN && !HAVE_JNF
+float
+jnf (int n, float x)
+{
+  return (float) jn (n, (double) x);
+}
+#endif
+
+#if HAVE_Y0 && !HAVE_Y0F
+float
+y0f (float x)
+{
+  return (float) y0 ((double) x);
+}
+#endif
+
+#if HAVE_Y1 && !HAVE_Y1F
+float
+y1f (float x)
+{
+  return (float) y1 ((double) x);
+}
+#endif
+
+#if HAVE_YN && !HAVE_YNF
+float
+ynf (int n, float x)
+{
+  return (float) yn (n, (double) x);
+}
+#endif

libgfortran/intrinsics/erf.c

+/* Wrapper for systems without the C99 erff() and erfcf() functions
+   Copyright (C) 2004 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 Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with libgfortran; see the file COPYING.LIB.  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_ERF && !HAVE_ERFF
+float
+erff (float x)
+{
+  return (float) erf ((double) x);
+}
+#endif
+
+#if HAVE_ERFC && !HAVE_ERFCF
+float
+erfcf (float x)
+{
+  return (float) erfc ((double) x);
+}
+#endif