ports/sysdeps/tile/bits/fenv.h

   1 /* Copyright (C) 2011 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _FENV_H
  20 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
  21 #endif
  22
  23 /* The TILE-Gx hardware does not provide floating-point exception
  24    handling, and TILEPro does not support any floating-point operations.  */
  25 #define FE_ALL_EXCEPT 0
  26
  27 /* TILE-Gx supports only round-to-nearest.  The software
  28    floating-point support also acts this way.  */
  29 enum
  30   {
  31     __FE_UNDEFINED = 0,
  32
  33     FE_TONEAREST = 1,
  34 #define FE_TONEAREST    FE_TONEAREST
  35   };
  36
  37 /* Type representing exception flags (if there were any).  */
  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 *) -1l)