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35 lines
1.4 KiB
C
35 lines
1.4 KiB
C
/* Store current floating-point environment and clear 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 Denis Joseph Barrow (djbarrow@de.ibm.com).
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <fenv_libc.h>
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#include <fpu_control.h>
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int feholdexcept (fenv_t *envp)
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{
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/* Store the environment. */
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fegetenv (envp);
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/* Clear the current sticky bits as more than one exception
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may be generated. */
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envp->fpc &= ~(FPC_FLAGS_MASK | FPC_DXC_MASK);
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/* Hold from generating fpu exceptions temporarily. */
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_FPU_SETCW ((envp->fpc & ~(FE_ALL_EXCEPT << FPC_EXCEPTION_MASK_SHIFT)));
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return 0;
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}
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