/* Copyright (C) 2011-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2011. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #include "math.h" #include "math_private.h" /* wrapper sqrt */ double sqrt (double x) { #if defined(__UCLIBC_HAS_FENV__) if (__builtin_expect (isless (x, 0.0), 0) && _LIB_VERSION != _IEEE_) return __kernel_standard (x, x, 26); /* sqrt(negative) */ #endif /* __UCLIBC_HAS_FENV__ */ return __ieee754_sqrt (x); } libm_hidden_def(sqrt)