1 /* Copyright (C) 2011-2022 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 #include <math.h> 20 #include <math_private.h> 21 #include <math-svid-compat.h> 22 #include <libm-alias-float.h> 23 24 25 #if LIBM_SVID_COMPAT 26 /* wrapper sqrtf */ 27 float __sqrtf(float x)28__sqrtf (float x) 29 { 30 if (__builtin_expect (isless (x, 0.0f), 0) && _LIB_VERSION != _IEEE_) 31 return __kernel_standard_f (x, x, 126); /* sqrt(negative) */ 32 33 return __ieee754_sqrtf (x); 34 } 35 libm_alias_float (__sqrt, sqrt) 36 #endif 37