1  /* Copyright (C) 2012-2023 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, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #ifndef _FENV_H
      19  # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
      20  #endif
      21  
      22  /* The Altera specified Nios II hardware FPU does not support exceptions,
      23     nor does the software floating-point support.  */
      24  #define FE_ALL_EXCEPT	0
      25  
      26  /* Nios II supports only round-to-nearest.  The software
      27     floating-point support also acts this way.  */
      28  enum
      29    {
      30      __FE_UNDEFINED = 0,
      31  
      32      FE_TONEAREST =
      33  #define FE_TONEAREST	1
      34        FE_TONEAREST,
      35    };
      36  
      37  /* Type representing exception flags. */
      38  typedef unsigned int fexcept_t;
      39  
      40  /* Type representing floating-point environment.  */
      41  typedef unsigned int fenv_t;
      42  
      43  /* If the default argument is used we use this value.  */
      44  #define FE_DFL_ENV	((const fenv_t *) -1)
      45  
      46  #if __GLIBC_USE (IEC_60559_BFP_EXT_C2X)
      47  /* Type representing floating-point control modes.  */
      48  typedef unsigned int femode_t;
      49  
      50  /* Default floating-point control modes.  */
      51  # define FE_DFL_MODE	((const femode_t *) -1L)
      52  #endif