/* Copyright (C) 1998-2018 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

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

   of the appropriate bits in the FPU control word.  */

enum

  {

    FE_INEXACT =

#define FE_INEXACT	0x04

      FE_INEXACT,

    FE_UNDERFLOW =

#define FE_UNDERFLOW	0x08

      FE_UNDERFLOW,

    FE_OVERFLOW =

#define FE_OVERFLOW	0x10

      FE_OVERFLOW,

    FE_DIVBYZERO =

#define FE_DIVBYZERO	0x20

      FE_DIVBYZERO,

    FE_INVALID =

#define FE_INVALID	0x40

      FE_INVALID,

  };

#define FE_ALL_EXCEPT \

	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)

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

   use again the bit positions in the FPU control word as the values

   for the appropriate macros.  */

enum

  {

    FE_TONEAREST =

#define FE_TONEAREST	0x0

      FE_TONEAREST,

    FE_TOWARDZERO =

#define FE_TOWARDZERO	0x1

      FE_TOWARDZERO,

    FE_UPWARD =

#define FE_UPWARD	0x2

      FE_UPWARD,

    FE_DOWNWARD =

#define FE_DOWNWARD	0x3

      FE_DOWNWARD

  };

/* Type representing exception flags.  */

typedef unsigned short int fexcept_t;

/* Type representing floating-point environment.  This function corresponds

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

typedef struct

  {

    unsigned int __fp_control_register;

  }

fenv_t;

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

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

#ifdef __USE_GNU

/* Floating-point environment where none of the exception is 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