2000-08-28 05:59:48 +00:00
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/* Disable floating-point exceptions.
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2019-01-01 00:11:28 +00:00
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Copyright (C) 2000-2019 Free Software Foundation, Inc.
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2000-08-28 05:59:48 +00:00
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This file is part of the GNU C Library.
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Contributed by Geoffrey Keating <geoffk@geoffk.org>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 04:58:11 +00:00
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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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2000-08-28 05:59:48 +00:00
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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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2001-07-06 04:58:11 +00:00
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Lesser General Public License for more details.
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2000-08-28 05:59:48 +00:00
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2001-07-06 04:58:11 +00:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-09 23:18:22 +00:00
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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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2000-08-28 05:59:48 +00:00
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#include <fenv_libc.h>
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int
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fedisableexcept (int excepts)
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{
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2014-04-28 19:38:24 +00:00
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fenv_union_t fe, curr;
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2014-04-29 12:45:05 +00:00
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int result, new;
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2000-08-28 05:59:48 +00:00
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2014-04-28 19:38:24 +00:00
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/* Get current exception mask to return. */
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fe.fenv = curr.fenv = fegetenv_register ();
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result = fenv_reg_to_exceptions (fe.l);
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2000-08-28 05:59:48 +00:00
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if ((excepts & FE_ALL_INVALID) == FE_ALL_INVALID)
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excepts = (excepts | FE_INVALID) & ~ FE_ALL_INVALID;
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2014-04-28 19:38:24 +00:00
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/* Sets the new exception mask. */
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2019-07-13 01:13:58 +00:00
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fe.l &= ~ fenv_exceptions_to_reg (excepts);
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2014-04-28 19:38:24 +00:00
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if (fe.l != curr.l)
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fesetenv_register (fe.fenv);
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2000-08-28 05:59:48 +00:00
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2008-04-12 00:51:34 +00:00
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new = __fegetexcept ();
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2007-05-07 06:22:38 +00:00
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if (new == 0 && result != 0)
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(void)__fe_mask_env ();
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if ((new & excepts) != 0)
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2000-08-28 05:59:48 +00:00
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result = -1;
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return result;
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}
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