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46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* Raise given exceptions.
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Copyright (C) 2000, 2002 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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feraiseexcept (int excepts)
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{
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fpu_control_t cw;
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/* Get current state. */
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_FPU_GETCW (cw);
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/* Set flag bits (which are accumulative), and *also* set the
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cause bits. The setting of the cause bits is what actually causes
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the hardware to generate the exception, if the corresponding enable
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bit is set as well. */
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excepts &= FE_ALL_EXCEPT;
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cw |= excepts | (excepts << CAUSE_SHIFT);
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/* Set new state. */
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_FPU_SETCW (cw);
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return 0;
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}
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