/* Copyright (C) 1997-2018 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/>.  */

#ifndef _FENV_H

# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."

#endif

#if defined __HAVE_68881__ || defined __HAVE_FPU__ || defined __mcffpu__

/* Define bits representing the exception.  We use the bit positions of

   the appropriate bits in the FPSR Accrued Exception Byte.  */

enum

  {

    FE_INEXACT =

# define FE_INEXACT	(1 << 3)

      FE_INEXACT,

    FE_DIVBYZERO =

# define FE_DIVBYZERO	(1 << 4)

      FE_DIVBYZERO,

    FE_UNDERFLOW =

# define FE_UNDERFLOW	(1 << 5)

      FE_UNDERFLOW,

    FE_OVERFLOW =

# define FE_OVERFLOW	(1 << 6)

      FE_OVERFLOW,

    FE_INVALID =

# define FE_INVALID	(1 << 7)

      FE_INVALID

  };

# define FE_ALL_EXCEPT \

	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)

/* The m68k FPU supports all of the four defined rounding modes.  We use

   the bit positions in the FPCR Mode Control Byte as the values for the

   appropriate macros.  */

enum

  {

    FE_TONEAREST =

# define FE_TONEAREST	0

      FE_TONEAREST,

    FE_TOWARDZERO =

# define FE_TOWARDZERO	(1 << 4)

      FE_TOWARDZERO,

    FE_DOWNWARD =

# define FE_DOWNWARD	(2 << 4)

      FE_DOWNWARD,

    FE_UPWARD =

# define FE_UPWARD	(3 << 4)

      FE_UPWARD

  };

#else

/* In the soft-float case, only rounding to nearest is supported, with

   no exceptions.  */

# define FE_ALL_EXCEPT 0

enum

  {

    __FE_UNDEFINED = -1,

    FE_TONEAREST =

# define FE_TONEAREST	0

      FE_TONEAREST

  };

#endif

/* Type representing exception flags.  */

typedef unsigned int fexcept_t;

#if defined __HAVE_68881__ || defined __HAVE_FPU__ || defined __mcffpu__

/* Type representing floating-point environment.  This structure

   corresponds to the layout of the block written by `fmovem'.  */

typedef struct

  {

    unsigned int __control_register;

    unsigned int __status_register;

    unsigned int __instruction_address;

  }

fenv_t;

#else

/* Keep ABI compatibility with the type used in the generic

   bits/fenv.h, formerly used for no-FPU ColdFire.  */

typedef struct

  {

    fexcept_t __excepts;

  }

fenv_t;

#endif

/* If the default argument is used we use this value.  */

#define FE_DFL_ENV	((const fenv_t *) -1)

#if defined __USE_GNU && (defined __HAVE_68881__	\

			  || defined __HAVE_FPU__	\

			  || defined __mcffpu__)

/* Floating-point environment where none of the exceptions are masked.  */

# define FE_NOMASK_ENV	((const fenv_t *) -2)

#endif

#if __GLIBC_USE (IEC_60559_BFP_EXT)

/* Type representing floating-point control modes.  */

typedef unsigned int femode_t;

/* Default floating-point control modes.  */

# define FE_DFL_MODE	((const femode_t *) -1L)

#endif