1  /* Wrapper to set errno for sqrt.
       2     Copyright (C) 2017-2023 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  /* Only build wrappers from the templates for the types that define the macro
      20     below.  This macro is set in math-type-macros-<type>.h in sysdeps/generic
      21     for each floating-point type.  */
      22  #if __USE_WRAPPER_TEMPLATE
      23  
      24  # define NO_MATH_REDIRECT
      25  # include <errno.h>
      26  # include <fenv.h>
      27  # define dsqrtl __hide_dsqrtl
      28  # define f32xsqrtf64 __hide_f32xsqrtf64
      29  # define f64xsqrtf128 __hide_f64xsqrtf128
      30  # include <math.h>
      31  # undef dsqrtl
      32  # undef f32xsqrtf64
      33  # undef f64xsqrtf128
      34  # include <math_private.h>
      35  # include <math-narrow-alias.h>
      36  
      37  FLOAT
      38  M_DECL_FUNC (__sqrt) (FLOAT x)
      39  {
      40    if (__glibc_unlikely (isless (x, M_LIT (0.0))))
      41      /* Domain error: sqrt(x<-0).  */
      42      __set_errno (EDOM);
      43    return M_SUF (__ieee754_sqrt) (x);
      44  }
      45  declare_mgen_alias (__sqrt, sqrt)
      46  declare_mgen_alias_narrow (__sqrt, sqrt)
      47  
      48  #endif /* __USE_WRAPPER_TEMPLATE.  */