47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* Install given floating-point environment and raise exceptions.
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Copyright (C) 2018-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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<https://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <fpu_control.h>
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#include <fenv_libc.h>
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#include <fenv_private.h>
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#include <stdio.h>
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int
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__feupdateenv (const fenv_t *envp)
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{
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int temp;
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/* Save current exceptions. */
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_FPU_GETFPSR (temp);
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temp = (temp >> CAUSE_SHIFT) & FE_ALL_EXCEPT;
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/* Install new environment. */
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__fesetenv (envp);
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/* Raise the safed exception. Incidently for us the implementation
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defined format of the values in objects of type fexcept_t is the
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same as the ones specified using the FE_* constants. */
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feraiseexcept (temp);
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/* Success. */
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return 0;
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}
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libm_hidden_def (__feupdateenv)
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weak_alias (__feupdateenv, feupdateenv)
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libm_hidden_weak (feupdateenv)
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