| /* long double square root in software floating-point emulation. |
| Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Richard Henderson (rth@cygnus.com) and |
| Jakub Jelinek (jj@ultra.linux.cz). |
| |
| 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdlib.h> |
| #include <soft-fp.h> |
| #include <quad.h> |
| #include <shlib-compat.h> |
| |
| long double |
| __ieee754_sqrtl (const long double a) |
| { |
| FP_DECL_EX; |
| FP_DECL_Q(A); FP_DECL_Q(C); |
| long double c; |
| long _round = 4; /* dynamic rounding */ |
| |
| FP_INIT_ROUNDMODE; |
| FP_UNPACK_Q(A, a); |
| FP_SQRT_Q(C, A); |
| FP_PACK_Q(c, C); |
| FP_HANDLE_EXCEPTIONS; |
| return c; |
| } |
| |
| /* ??? We forgot to add this symbol in 2.15. Getting this into 2.18 isn't as |
| straight-forward as just adding the alias, since a generic Versions file |
| includes the 2.15 version and the linker uses the first one it sees. */ |
| #if SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18) |
| versioned_symbol (libm, __ieee754_sqrtl, __sqrtl_finite, GLIBC_2_18); |
| #else |
| strong_alias(__ieee754_sqrtl, __sqrtl_finite) |
| #endif |
