/* FPU control word definitions.  Stub version.
Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#ifndef _FPU_CONTROL_H
#define _FPU_CONTROL_H

#define _FPU_RESERVED 0xffffffff  /* These bits are reserved.  */

/* The fdlibm code requires no interrupts for exceptions.  Don't
   change the rounding mode, it would break long double I/O!  */
#define _FPU_DEFAULT  0x00000000 /* Default value.  */

/* Type of the control word.  */
typedef unsigned int fpu_control_t;

/* Macros for accessing the hardware control word.
 * On the ARM, we can't do this from user mode (it would trap). 
 */
#define _FPU_GETCW(cw) __asm__ ("movnv r0,r0" : "=g" (cw))
#define _FPU_SETCW(cw) __asm__ ("movnv r0,r0" : : "g" (cw))

/* Default control word set at startup.  */
extern fpu_control_t __fpu_control;

__BEGIN_DECLS

/* Called at startup.  It can be used to manipulate fpu control register.  */
extern void __setfpucw __P ((fpu_control_t));

__END_DECLS

#endif /* _FPU_CONTROL_H */