sysdeps/nios2/bits/fenv.h

   1 /* Copyright (C) 2012-2019 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    <http://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)
  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