sysdeps/generic/fpu_control.h

   1 /* FPU control word definitions.  Stub version.
   2    Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _FPU_CONTROL_H
  21 #define _FPU_CONTROL_H
  22
  23 #define _FPU_RESERVED 0xffffffff    /* These bits are reserved and not changed.  */
  24
  25 /* The fdlibm code requires no interrupts for exceptions.  Don't
  26    change the rounding mode, it would break long double I/O!  */
  27 #define _FPU_DEFAULT  0x00000000 /* Default value.  */
  28
  29 /* Type of the control word.  */
  30 typedef unsigned int fpu_control_t;
  31
  32 /* Macros for accessing the hardware control word.  */
  33 #define _FPU_GETCW(cw) 0
  34 #define _FPU_SETCW(cw) do { } while (0)
  35
  36 /* Default control word set at startup.  */
  37 extern fpu_control_t __fpu_control;
  38
  39 #endif /* _FPU_CONTROL_H */