(root)/
glibc-2.38/
math/
w_sqrtl_compat.c
       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  #define NO_MATH_REDIRECT
      19  #define f64xsqrtf128 __hide_f64xsqrtf128
      20  #include <math.h>
      21  #undef f64xsqrtf128
      22  #include <math_private.h>
      23  #include <math-svid-compat.h>
      24  #include <math-narrow-alias.h>
      25  #include <libm-alias-ldouble.h>
      26  
      27  
      28  #if LIBM_SVID_COMPAT
      29  /* wrapper sqrtl */
      30  long double
      31  __sqrtl (long double x)
      32  {
      33    if (__builtin_expect (isless (x, 0.0L), 0) && _LIB_VERSION != _IEEE_)
      34      return __kernel_standard_l (x, x, 226); /* sqrt(negative) */
      35  
      36    return __ieee754_sqrtl (x);
      37  }
      38  libm_alias_ldouble (__sqrt, sqrt)
      39  libm_alias_ldouble_narrow (__sqrt, sqrt)
      40  #endif