1  /* Store current floating-point environment.
       2     Copyright (C) 1997-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library.  If not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <fenv.h>
      20  #include <fpu_control.h>
      21  #include <arm-features.h>
      22  
      23  
      24  int
      25  __fegetenv (fenv_t *envp)
      26  {
      27    fpu_control_t fpscr;
      28  
      29    /* Fail if a VFP unit isn't present.  */
      30    if (!ARM_HAVE_VFP)
      31      return 1;
      32  
      33    _FPU_GETCW (fpscr);
      34    envp->__cw = fpscr;
      35    return 0;
      36  }
      37  libm_hidden_def (__fegetenv)
      38  weak_alias (__fegetenv, fegetenv)
      39  libm_hidden_weak (fegetenv)