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37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* Enable floating-point exceptions.
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Copyright (C) 2000-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jes Sorensen <Jes.Sorensen@cern.ch>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <fenv.h>
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int
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feenableexcept (int excepts)
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{
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fenv_t old_fpsr;
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fenv_t new_fpsr;
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/* Get the current fpsr. */
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__asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (old_fpsr));
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new_fpsr = old_fpsr & ~((fenv_t) excepts & FE_ALL_EXCEPT);
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__asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (new_fpsr) : "memory");
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return (old_fpsr ^ FE_ALL_EXCEPT) & FE_ALL_EXCEPT;
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}
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