glibc/sysdeps/arc/bits/fenv.h

/* Floating point environment.  ARC version.
   Copyright (C) 2020-2021 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
   <https://www.gnu.org/licenses/>.  */

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

enum
  {
    FE_INVALID   =
# define FE_INVALID	(0x01)
      FE_INVALID,
    FE_DIVBYZERO =
# define FE_DIVBYZERO	(0x02)
      FE_DIVBYZERO,
    FE_OVERFLOW  =
# define FE_OVERFLOW	(0x04)
      FE_OVERFLOW,
    FE_UNDERFLOW =
# define FE_UNDERFLOW	(0x08)
      FE_UNDERFLOW,
    FE_INEXACT   =
# define FE_INEXACT	(0x10)
      FE_INEXACT
  };

# define FE_ALL_EXCEPT \
	(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)

enum
  {
    FE_TOWARDZERO =
# define FE_TOWARDZERO	(0x0)
      FE_TOWARDZERO,
    FE_TONEAREST  =
# define FE_TONEAREST	(0x1)	/* default */
      FE_TONEAREST,
    FE_UPWARD     =
# define FE_UPWARD	(0x2)
      FE_UPWARD,
    FE_DOWNWARD   =
# define FE_DOWNWARD	(0x3)
      FE_DOWNWARD
  };

typedef unsigned int fexcept_t;

typedef struct
{
  unsigned int __fpcr;
  unsigned int __fpsr;
} fenv_t;

/* If the default argument is used we use this value.  */
#define FE_DFL_ENV	((const fenv_t *) -1)

#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