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/* Enable floating-point exceptions.
Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 1999.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv.h>
int
feenableexcept (int excepts)
{
unsigned short int new_exc, old_exc;
/* Get the current control word. */
__asm__ ("fstcw %0" : "=m" (*&new_exc));
excepts &= FE_ALL_EXCEPT;
old_exc = new_exc & FE_ALL_EXCEPT;
new_exc |= excepts;
__asm__ ("fldcw %0" : : "m" (*&new_exc));
return old_exc;
}
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