/* Canonicalize floating-point representation.

   Copyright (C) 2016-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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>

int

M_DECL_FUNC (__canonicalize) (FLOAT *cx, const FLOAT *x)

{

  FLOAT val = *x;

  /* For all binary formats supported by glibc, iscanonical only fails

     if the representation is not a valid representation of the type,

     so the only work to do is for signaling NaNs.  */

  if (!iscanonical (val))

    return 1;

  if (issignaling (val))

    *cx = val + val;

  else

    *cx = val;

  return 0;

}

declare_mgen_alias (__canonicalize, canonicalize)