/* Copyright (C) 2011-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.

   The GNU C Library 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.

   The GNU C Library 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 the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <math.h>

#include <math_private.h>

#include <math-svid-compat.h>

#include <libm-alias-double.h>

#if LIBM_SVID_COMPAT

/* wrapper atanh */

double

__atanh (double x)

{

  if (__builtin_expect (isgreaterequal (fabs (x), 1.0), 0)

      && _LIB_VERSION != _IEEE_)

    return __kernel_standard (x, x,

			      fabs (x) > 1.0

			      ? 30		/* atanh(|x|>1) */

			      : 31);		/* atanh(|x|==1) */

  return __ieee754_atanh (x);

}

libm_alias_double (__atanh, atanh)

#endif