1  /* Copyright (C) 2011-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <fenv.h>
      19  #include <math.h>
      20  #include <math_private.h>
      21  #include <math-svid-compat.h>
      22  #include <libm-alias-double.h>
      23  
      24  
      25  #if LIBM_SVID_COMPAT
      26  /* wrapper asin */
      27  double
      28  __asin (double x)
      29  {
      30    if (__builtin_expect (isgreater (fabs (x),  1.0), 0)
      31        && _LIB_VERSION != _IEEE_)
      32      {
      33        /* asin(|x|>1) */
      34        __feraiseexcept (FE_INVALID);
      35        return __kernel_standard (x, x, 2);
      36      }
      37  
      38    return __ieee754_asin (x);
      39  }
      40  libm_alias_double (__asin, asin)
      41  #endif