1 /* Wrapper to set errno for sqrt. 2 Copyright (C) 2017-2022 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 M_DECL_FUNC(__sqrt)38M_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. */ 49