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/* Copyright (C) 2004 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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 SPEFSCR... */
enum
{
FE_INEXACT = 1 << (63 - 42),
#define FE_INEXACT FE_INEXACT
FE_INVALID = 1 << (63 - 43),
#define FE_INVALID FE_INVALID
FE_DIVBYZERO = 1 << (63 - 44),
#define FE_DIVBYZERO FE_DIVBYZERO
FE_UNDERFLOW = 1 << (63 - 45),
#define FE_UNDERFLOW FE_UNDERFLOW
FE_OVERFLOW = 1 << (63 - 46)
#define FE_OVERFLOW FE_OVERFLOW
};
#define FE_ALL_EXCEPT \
(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
/* The E500 support all of the four defined rounding modes. We use
the bit pattern in the SPEFSCR as the values for the appropriate
macros. */
enum
{
FE_TONEAREST = 0,
#define FE_TONEAREST FE_TONEAREST
FE_TOWARDZERO = 1,
#define FE_TOWARDZERO FE_TOWARDZERO
FE_UPWARD = 2,
#define FE_UPWARD FE_UPWARD
FE_DOWNWARD = 3
#define FE_DOWNWARD FE_DOWNWARD
};
/* Type representing exception flags. */
typedef unsigned int fexcept_t;
typedef double fenv_t;
/* If the default argument is used we use this value. */
extern const fenv_t __fe_dfl_env;
#define FE_DFL_ENV (&__fe_dfl_env)
#ifdef __USE_GNU
/* Floating-point environment where all exceptions are enabled. Note that
this is not sufficient to give you SIGFPE. */
extern const fenv_t __fe_enabled_env;
# define FE_ENABLED_ENV (&__fe_enabled_env)
/* Floating-point environment with all exceptions enabled. Note that
just evaluating this value will set the processor into 'FPU
exceptions imprecise recoverable' mode, which may cause a significant
performance penalty (but have no other visible effect). */
extern const fenv_t *__fe_nomask_env (void);
# define FE_NOMASK_ENV (__fe_nomask_env ())
#endif
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