1  /* Store current floating-point environment and clear exceptions for
       2     atomic compound assignment.
       3     Copyright (C) 2013-2023 Free Software Foundation, Inc.
       4     This file is part of the GNU C Library.
       5  
       6     The GNU C Library is free software; you can redistribute it and/or
       7     modify it under the terms of the GNU Lesser General Public
       8     License as published by the Free Software Foundation; either
       9     version 2.1 of the License, or (at your option) any later version.
      10  
      11     The GNU C Library is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14     Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public
      17     License along with the GNU C Library.  If not, see
      18     <https://www.gnu.org/licenses/>.  */
      19  
      20  #include "soft-fp.h"
      21  #include "soft-supp.h"
      22  
      23  void
      24  __atomic_feholdexcept (fenv_t *envp)
      25  {
      26    fenv_union_t u;
      27  
      28    u.l[0] = __sim_exceptions_thread;
      29    /* The rounding mode is not changed by arithmetic, so no need to
      30       save it.  */
      31    u.l[1] = __sim_disabled_exceptions_thread;
      32    *envp = u.fenv;
      33  
      34    /* This function postdates the global variables being turned into
      35       compat symbols, so no need to set them.  */
      36    __sim_exceptions_thread = 0;
      37    __sim_disabled_exceptions_thread = FE_ALL_EXCEPT;
      38  }