/* Return the least floating-point number greater than X.

   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 <float.h>

#include <math.h>

#include <math_private.h>

#include <libm-alias-float.h>

/* Return the least floating-point number greater than X.  */

float

__nextupf (float x)

{

  int32_t hx, ix;

  GET_FLOAT_WORD (hx, x);

  ix = hx & 0x7fffffff;

  if (ix == 0)

    return FLT_TRUE_MIN;

  if (ix > 0x7f800000)		/* x is nan.  */

    return x + x;

  if (hx >= 0)

    {				/* x > 0.  */

      if (isinf (x))

        return x;

      hx += 1;

    }

  else

    hx -= 1;

  SET_FLOAT_WORD (x, hx);

  return x;

}

libm_alias_float (__nextup, nextup)