1: /* Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
    2:    This file is part of the GNU C Library.
    3: 
    4:    The GNU C Library is free software; you can redistribute it and/or
    5:    modify it under the terms of the GNU Lesser General Public
    6:    License as published by the Free Software Foundation; either
    7:    version 2.1 of the License, or (at your option) any later version.
    8: 
    9:    The GNU C Library is distributed in the hope that it will be useful,
   10:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   11:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   12:    Lesser General Public License for more details.
   13: 
   14:    You should have received a copy of the GNU Lesser General Public
   15:    License along with the GNU C Library; if not, write to the Free
   16:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   17:    02111-1307 USA.  */
   18: 
   19: #ifndef _FENV_H
   20: # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
   21: #endif
   22: 
   23: 
   24: /* Here should be the exception be defined:
   25:     FE_INVALID
   26:     FE_DIVBYZERO
   27:     FE_OVERFLOW
   28:     FE_UNDERFLOW
   29:     FE_INEXACT
   30:    We define no macro which signals no exception is supported.  */
   31: 
   32: #define FE_ALL_EXCEPT 0
   33: 
   34: 
   35: /* Here should the rounding modes be defined:
   36:     FE_TONEAREST
   37:     FE_DOWNWARD
   38:     FE_UPWARD
   39:     FE_TOWARDZERO
   40:    We define no macro which signals no rounding mode is selectable.  */
   41: 
   42: 
   43: /* Type representing exception flags.  */
   44: typedef unsigned int fexcept_t;
   45: 
   46: 
   47: /* Type representing floating-point environment.  */
   48: typedef struct
   49:   {
   50:     fexcept_t __excepts;
   51:     /* XXX I don't know what else we should save.  */
   52:   }
   53: fenv_t;
   54: 
   55: /* If the default argument is used we use this value.  */
   56: #define FE_DFL_ENV      ((__const fenv_t *) -1l)