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43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/* Enable floating-point exceptions.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Andreas Jaeger <aj@suse.de>, 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <fenv.h>
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#include <fenv_libc.h>
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#include <fpu_control.h>
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int
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feenableexcept (int excepts)
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{
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unsigned int new_exc, old_exc;
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/* Get the current control word. */
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_FPU_GETCW (new_exc);
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old_exc = (new_exc & ENABLE_MASK) >> ENABLE_SHIFT;
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excepts &= FE_ALL_EXCEPT;
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new_exc |= excepts << ENABLE_SHIFT;
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new_exc &= ~_FPU_RESERVED;
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_FPU_SETCW (new_exc);
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return old_exc;
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}
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