diff options
Diffstat (limited to 'sysdeps/ia64/fpu/fsetexcptflg.c')
-rw-r--r-- | sysdeps/ia64/fpu/fsetexcptflg.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/ia64/fpu/fsetexcptflg.c b/sysdeps/ia64/fpu/fsetexcptflg.c new file mode 100644 index 0000000000..5e040416d4 --- /dev/null +++ b/sysdeps/ia64/fpu/fsetexcptflg.c @@ -0,0 +1,44 @@ +/* Set floating-point environment exception handling. + Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 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> +#include <math.h> + +int +fesetexceptflag (const fexcept_t *flagp, int excepts) +{ + fenv_t fpsr; + + /* Get the current exception state. */ + __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr)); + + /* Get the reverse bits so we can enable the exceptions flagged + rather than disable them. */ + excepts ^= FE_ALL_EXCEPT; + + /* Set all the bits that were called for. */ + fpsr = (fpsr & ~FE_ALL_EXCEPT) | (*flagp & excepts & FE_ALL_EXCEPT); + + /* And store it back. */ + __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (fpsr) : "memory"); + + /* Success. */ + return 0; +} |