diff options
Diffstat (limited to 'sysdeps/alpha/fpu/feenablxcpt.c')
-rw-r--r-- | sysdeps/alpha/fpu/feenablxcpt.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/alpha/fpu/feenablxcpt.c b/sysdeps/alpha/fpu/feenablxcpt.c new file mode 100644 index 0000000000..f9eb203c1e --- /dev/null +++ b/sysdeps/alpha/fpu/feenablxcpt.c @@ -0,0 +1,35 @@ +/* Enable floating-point exceptions. + Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2000. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv_libc.h> + +int +feenableexcept (int excepts) +{ + unsigned long int new_exc, old_exc; + + new_exc = __ieee_get_fp_control (); + + old_exc = (new_exc & SWCR_ENABLE_MASK) << SWCR_ENABLE_SHIFT; + new_exc |= (excepts >> SWCR_ENABLE_SHIFT) & SWCR_ENABLE_MASK; + + __ieee_set_fp_control (new_exc); + + return old_exc; +} |